From e01249f49c0d7e994da28441977455adc5015bc3 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Vin=C3=ADcius=20Moreira?= <vinicius_fmoreira@hotmail.com>
Date: Wed, 4 Dec 2019 12:47:10 -0300
Subject: [PATCH] [improvement][aur] retrieving and displaying all transitive
 required dependencies

---
 CHANGELOG.md                       |   6 +-
 README.md                          |   3 +-
 bauh/gems/arch/aur.py              |  15 +++
 bauh/gems/arch/confirmation.py     |  14 +--
 bauh/gems/arch/controller.py       | 125 ++++++++++++++++--------
 bauh/gems/arch/depedencies.py      |  95 ++++++++++++++++++
 bauh/gems/arch/exceptions.py       |   5 +
 bauh/gems/arch/pacman.py           | 148 ++++++++++++++++++++++++++++-
 bauh/gems/arch/resources/locale/ca |   8 +-
 bauh/gems/arch/resources/locale/de |   8 +-
 bauh/gems/arch/resources/locale/en |   8 +-
 bauh/gems/arch/resources/locale/es |   8 +-
 bauh/gems/arch/resources/locale/it |   8 +-
 bauh/gems/arch/resources/locale/pt |   8 +-
 bauh/gems/snap/controller.py       |   5 +-
 bauh/gems/snap/resources/locale/ca |   3 +-
 bauh/gems/snap/resources/locale/de |   3 +-
 bauh/gems/snap/resources/locale/en |   3 +-
 bauh/gems/snap/resources/locale/es |   3 +-
 bauh/gems/snap/resources/locale/it |   3 +-
 bauh/gems/snap/resources/locale/pt |   3 +-
 bauh/view/qt/confirmation.py       |  24 ++++-
 bauh/view/qt/window.py             |   3 +-
 23 files changed, 428 insertions(+), 81 deletions(-)
 create mode 100644 bauh/gems/arch/depedencies.py
 create mode 100644 bauh/gems/arch/exceptions.py

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 04de7d18..c4339b03 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,7 +6,11 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 
 ## [0.7.4] 2019-12
 ### Improvements
-- Some AUR labels have been changed to not confuse the user
+- AUR:
+    - retrieving and displaying all transitive required dependencies ( it can be disabled via the new environment variable **BAUH_ARCH_CHECK_SUBDEPS=0** )
+    - displaying **makedepends** and **checkdepends** in the info window
+    - Some AUR labels have been changed to not confuse the user
+- Minor UI improvements
 
 ### Fixes
 - AUR:
diff --git a/README.md b/README.md
index 09dadc67..102ad4fe 100644
--- a/README.md
+++ b/README.md
@@ -126,7 +126,8 @@ will be pre-downloaded faster ( it does **NOT** modify your **pacman** settings
     ( For more information about these optimizations, have a look at [Makepkg](https://wiki.archlinux.org/index.php/Makepkg) )
 - Arch package memory-indexer running every 20 minutes. This memory index is used when AUR Api cannot handle the amount of results found for a given search. It can be disabled via the environment variable **BAUH_ARCH_AUR_INDEX_UPDATER=0**.
 - If some of your installed packages are not categorized, send an e-mail to **bauh4linux@gmail.com** informing their names and categories in the following format: ```name=category1[,category2,category3,...]```
-
+- Transitive dependencies checking can be disabled through the environment variable **BAUH_ARCH_CHECK_SUBDEPS=0**. The dependency checking process will be
+faster, but the application will ask for a new confirmation every time a not installed dependency is detected.
 
 ### General settings
 You can change some application settings via environment variables or arguments (type ```bauh --help``` to get more information).
diff --git a/bauh/gems/arch/aur.py b/bauh/gems/arch/aur.py
index 857c4be2..6c464ca7 100644
--- a/bauh/gems/arch/aur.py
+++ b/bauh/gems/arch/aur.py
@@ -4,6 +4,8 @@ from typing import Set, List
 from bauh.api.http import HttpClient
 import urllib.parse
 
+from bauh.gems.arch.exceptions import PackageNotFoundException
+
 URL_INFO = 'https://aur.archlinux.org/rpc/?v=5&type=info&'
 URL_SRC_INFO = 'https://aur.archlinux.org/cgit/aur.git/plain/.SRCINFO?h='
 URL_SEARCH = 'https://aur.archlinux.org/rpc/?v=5&type=search&arg='
@@ -46,5 +48,18 @@ class AURClient:
 
             return info
 
+    def get_all_dependencies(self, name: str) -> Set[str]:
+        deps = set()
+        info = self.get_src_info(name)
+
+        if not info:
+            raise PackageNotFoundException(name)
+
+        for attr in ('makedepends', 'depends', 'checkdepends'):
+            if info.get(attr):
+                deps.update(info[attr])
+
+        return deps
+
     def _map_names_as_queries(self, names) -> str:
         return '&'.join(['arg[{}]={}'.format(i, urllib.parse.quote(n)) for i, n in enumerate(names)])
diff --git a/bauh/gems/arch/confirmation.py b/bauh/gems/arch/confirmation.py
index 15838e93..bec6e10a 100644
--- a/bauh/gems/arch/confirmation.py
+++ b/bauh/gems/arch/confirmation.py
@@ -1,4 +1,4 @@
-from typing import Set
+from typing import Set, List, Tuple
 
 from bauh.api.abstract.handler import ProcessWatcher
 from bauh.api.abstract.view import MultipleSelectComponent, InputOption
@@ -25,7 +25,7 @@ def request_optional_deps(pkgname: str, pkg_mirrors: dict, watcher: ProcessWatch
                                         default_options=None)
 
     install = watcher.request_confirmation(title=i18n['arch.install.optdeps.request.title'],
-                                           body='<p>{}.</p><p>{}.</p>'.format(i18n['arch.install.optdeps.request.body'].format(bold(pkgname)), i18n['arch.install.optdeps.request.help']),
+                                           body='<p>{}.</p><p>{}:</p>'.format(i18n['arch.install.optdeps.request.body'].format(bold(pkgname)), i18n['arch.install.optdeps.request.help']),
                                            components=[view_opts],
                                            confirmation_label=i18n['install'].capitalize(),
                                            deny_label=i18n['do_not.install'].capitalize())
@@ -34,14 +34,14 @@ def request_optional_deps(pkgname: str, pkg_mirrors: dict, watcher: ProcessWatch
         return {o.value for o in view_opts.values}
 
 
-def request_install_missing_deps(pkgname: str, pkg_mirrors: dict, watcher: ProcessWatcher, i18n: I18n) -> bool:
-    msg = '<p>{}</p>'.format(i18n['arch.missing_deps.body'].format(bold(pkgname)))
+def request_install_missing_deps(pkgname: str, deps: List[Tuple[str,str]], watcher: ProcessWatcher, i18n: I18n) -> bool:
+    msg = '<p>{}</p>'.format(i18n['arch.missing_deps.body'].format(name=bold(pkgname), deps=bold(len(deps))))
 
     opts = []
-    for p, m in pkg_mirrors.items():
-        op = InputOption('{} ( {}: {} )'.format(p, i18n['repository'], m.upper()), p)
+    for dep in deps:
+        op = InputOption('{} ( {}: {} )'.format(dep[0], i18n['repository'], dep[1].upper()), dep[0])
         op.read_only = True
-        op.icon_path = _get_mirror_icon(m)
+        op.icon_path = _get_mirror_icon(dep[1])
         opts.append(op)
 
     comp = MultipleSelectComponent(label='', options=opts, default_options=set(opts))
diff --git a/bauh/gems/arch/controller.py b/bauh/gems/arch/controller.py
index 0612fc57..9dc54b0d 100644
--- a/bauh/gems/arch/controller.py
+++ b/bauh/gems/arch/controller.py
@@ -6,7 +6,7 @@ import subprocess
 import time
 from pathlib import Path
 from threading import Thread
-from typing import List, Set, Type
+from typing import List, Set, Type, Tuple
 
 import requests
 
@@ -22,6 +22,7 @@ from bauh.commons.system import SystemProcess, ProcessHandler, new_subprocess, r
 from bauh.gems.arch import BUILD_DIR, aur, pacman, makepkg, pkgbuild, message, confirmation, disk, git, suggestions, \
     gpg, URL_CATEGORIES_FILE, CATEGORIES_CACHE_DIR, CATEGORIES_FILE_PATH
 from bauh.gems.arch.aur import AURClient
+from bauh.gems.arch.depedencies import DependenciesAnalyser
 from bauh.gems.arch.mapper import ArchDataMapper
 from bauh.gems.arch.model import ArchPackage
 from bauh.gems.arch.worker import AURIndexUpdater, ArchDiskCacheUpdater, ArchCompilationOptimizer
@@ -62,6 +63,7 @@ class ArchManager(SoftwareManager):
         self.categories_mapper = CategoriesDownloader('AUR', context.http_client, context.logger, self, self.context.disk_cache,
                                                       URL_CATEGORIES_FILE, CATEGORIES_CACHE_DIR, CATEGORIES_FILE_PATH)
         self.categories = {}
+        self.deps_analyser = DependenciesAnalyser(self.aur_client)
 
     def _upgrade_search_result(self, apidata: dict, installed_pkgs: dict, downgrade_enabled: bool, res: SearchResult, disk_loader: DiskCacheLoader):
         app = self.mapper.map_api_data(apidata, installed_pkgs['not_signed'], self.categories)
@@ -219,7 +221,7 @@ class ArchManager(SoftwareManager):
                                             break
 
                                     watcher.change_substatus(self.i18n['arch.downgrade.install_older'])
-                                    return self._make_pkg(pkg.name, pkg.maintainer, root_password, handler, app_build_dir, clone_path, dependency=False, skip_optdeps=True)
+                                    return self._build(pkg.name, pkg.maintainer, root_password, handler, app_build_dir, clone_path, dependency=False, skip_optdeps=True)
                                 else:
                                     watcher.show_message(title=self.i18n['arch.downgrade.error'],
                                                          body=self.i18n['arch.downgrade.impossible'].format(pkg.name),
@@ -308,11 +310,17 @@ class ArchManager(SoftwareManager):
             srcinfo = self.aur_client.get_src_info(pkg.name)
 
             if srcinfo:
+                if srcinfo.get('makedepends'):
+                    info['12_makedepends'] = srcinfo['makedepends']
+
                 if srcinfo.get('depends'):
-                    info['11_dependson'] = srcinfo['depends']
+                    info['13_dependson'] = srcinfo['depends']
 
                 if srcinfo.get('optdepends'):
-                    info['12_optdepends'] = srcinfo['optdepends']
+                    info['14_optdepends'] = srcinfo['optdepends']
+
+                if srcinfo.get('checkdepends'):
+                    info['15_checkdepends'] = srcinfo['checkdepends']
 
             if pkg.pkgbuild:
                 info['00_pkg_build'] = pkg.pkgbuild
@@ -355,34 +363,34 @@ class ArchManager(SoftwareManager):
             if os.path.exists(temp_dir):
                 shutil.rmtree(temp_dir)
 
-    def _install_deps(self, pkg_mirrors: dict, root_password: str, handler: ProcessHandler, change_progress: bool = False) -> str:
+    def _install_deps(self, deps: List[Tuple[str, str]], root_password: str, handler: ProcessHandler, change_progress: bool = False) -> str:
         """
-        :param pkg_mirrors:
+        :param pkgs_repos:
         :param root_password:
         :param handler:
         :return: not installed dependency
         """
-        progress_increment = int(100 / len(pkg_mirrors))
+        progress_increment = int(100 / len(deps))
         progress = 0
         self._update_progress(handler.watcher, 1, change_progress)
 
-        for pkgname, mirror in pkg_mirrors.items():
-            handler.watcher.change_substatus(self.i18n['arch.install.dependency.install'].format(bold('{} ()'.format(pkgname, mirror))))
-            if mirror == 'aur':
-                installed = self._install_from_aur(pkgname=pkgname, maintainer=None, root_password=root_password, handler=handler, dependency=True, change_progress=False)
+        for dep in deps:
+            handler.watcher.change_substatus(self.i18n['arch.install.dependency.install'].format(bold('{} ()'.format(dep[0], dep[1]))))
+            if dep[1] == 'aur':
+                installed = self._install_from_aur(pkgname=dep[0], maintainer=None, root_password=root_password, handler=handler, dependency=True, change_progress=False)
             else:
-                installed = self._install(pkgname=pkgname, maintainer=None, root_password=root_password, handler=handler, install_file=None, mirror=mirror, change_progress=False)
+                installed = self._install(pkgname=dep[0], maintainer=None, root_password=root_password, handler=handler, install_file=None, mirror=dep[1], change_progress=False)
 
             if not installed:
-                return pkgname
+                return dep[0]
 
             progress += progress_increment
             self._update_progress(handler.watcher, progress, change_progress)
 
         self._update_progress(handler.watcher, 100, change_progress)
 
-    def _map_mirrors(self, pkgnames: Set[str]) -> dict:
-        pkg_mirrors = pacman.get_mirrors(pkgnames)  # getting mirrors set
+    def _map_repos(self, pkgnames: Set[str]) -> dict:
+        pkg_mirrors = pacman.get_repositories(pkgnames)  # getting mirrors set
 
         if len(pkgnames) != len(pkg_mirrors):  # checking if any dep not found in the distro mirrors are from AUR
             nomirrors = {p for p in pkgnames if p not in pkg_mirrors}
@@ -423,12 +431,14 @@ class ArchManager(SoftwareManager):
 
         return True
 
-    def _make_pkg(self, pkgname: str, maintainer: str, root_password: str, handler: ProcessHandler, build_dir: str, project_dir: str, dependency: bool, skip_optdeps: bool = False, change_progress: bool = True) -> bool:
+    def _build(self, pkgname: str, maintainer: str, root_password: str, handler: ProcessHandler, build_dir: str, project_dir: str, dependency: bool, skip_optdeps: bool = False, change_progress: bool = True) -> bool:
 
         self._pre_download_source(pkgname, project_dir, handler.watcher)
 
         self._update_progress(handler.watcher, 50, change_progress)
-        if not self._check_deps(pkgname, root_password, handler, project_dir):
+
+        check_subdeps = bool(int(os.getenv('BAUH_ARCH_CHECK_SUBDEPS', 1)))
+        if not self._handle_deps_and_keys(pkgname, root_password, handler, project_dir, check_subdeps=check_subdeps):
             return False
 
         # building main package
@@ -458,35 +468,74 @@ class ArchManager(SoftwareManager):
 
         return False
 
-    def _check_deps(self, pkgname: str, root_password: str, handler: ProcessHandler, pkgdir: str) -> bool:
+    def _map_missing_deps(self, deps: List[str], watcher: ProcessWatcher, check_subdeps: bool = True) -> List[Tuple[str, str]]:
+        depnames = {RE_SPLIT_VERSION.split(dep)[0] for dep in deps}
+        dep_repos = self._map_repos(depnames)
+
+        if len(depnames) != len(dep_repos):  # checking if a dependency could not be found in any mirror
+            for dep in depnames:
+                if dep not in dep_repos:
+                    message.show_dep_not_found(dep, self.i18n, watcher)
+                    return
+
+        sorted_deps = []  # it will hold the proper order to install the missing dependencies
+
+        repo_deps, aur_deps = set(), set()
+
+        for dep, repo in dep_repos.items():
+            if repo == 'aur':
+                aur_deps.add(dep)
+            else:
+                repo_deps.add(dep)
+
+        if check_subdeps:
+            for deps in ((repo_deps, 'repo'), (aur_deps, 'aur')):
+                if deps[0]:
+                    missing_subdeps = self.deps_analyser.get_missing_dependencies_from(deps[0], deps[1])
+
+                    if missing_subdeps:
+                        for dep in missing_subdeps:
+                            if not dep[1]:
+                                message.show_dep_not_found(dep[0], self.i18n, watcher)
+                                return
+
+                        for dep in missing_subdeps:
+                            sorted_deps.append(dep)
+
+        for dep, repo in dep_repos.items():
+            if repo != 'aur':
+                sorted_deps.append((dep, repo))
+
+        for dep in aur_deps:
+            sorted_deps.append((dep, 'aur'))
+
+        return sorted_deps
+
+    def _handle_deps_and_keys(self, pkgname: str, root_password: str, handler: ProcessHandler, pkgdir: str, check_subdeps: bool = True) -> bool:
         handler.watcher.change_substatus(self.i18n['arch.checking.deps'].format(bold(pkgname)))
         check_res = makepkg.check(pkgdir, handler)
 
         if check_res:
             if check_res.get('missing_deps'):
-                depnames = {RE_SPLIT_VERSION.split(dep)[0] for dep in check_res['missing_deps']}
-                dep_mirrors = self._map_mirrors(depnames)
+                sorted_deps = self._map_missing_deps(check_res['missing_deps'], handler.watcher, check_subdeps=check_subdeps)
 
-                if len(depnames) != len(dep_mirrors):  # checking if a dependency could not be found in any mirror
-                    for dep in depnames:
-                        if dep not in dep_mirrors:
-                            message.show_dep_not_found(dep, self.i18n, handler.watcher)
-                            return False
+                if sorted_deps is None:
+                    return False
 
                 handler.watcher.change_substatus(self.i18n['arch.missing_deps_found'].format(bold(pkgname)))
 
-                if not confirmation.request_install_missing_deps(pkgname, dep_mirrors, handler.watcher, self.i18n):
+                if not confirmation.request_install_missing_deps(pkgname, sorted_deps, handler.watcher, self.i18n):
                     handler.watcher.print(self.i18n['action.cancelled'])
                     return False
 
-                dep_not_installed = self._install_deps(dep_mirrors, root_password, handler, change_progress=False)
+                dep_not_installed = self._install_deps(sorted_deps, root_password, handler, change_progress=False)
 
                 if dep_not_installed:
                     message.show_dep_not_installed(handler.watcher, pkgname, dep_not_installed, self.i18n)
                     return False
 
                 # it is necessary to re-check because missing PGP keys are only notified when there are none missing
-                return self._check_deps(pkgname, root_password, handler, pkgdir)
+                return self._handle_deps_and_keys(pkgname, root_password, handler, pkgdir, check_subdeps=False)
 
             if check_res.get('gpg_key'):
                 if handler.watcher.request_confirmation(title=self.i18n['arch.aur.install.unknown_key.title'],
@@ -520,7 +569,7 @@ class ArchManager(SoftwareManager):
         if not to_install:
             return True
 
-        pkg_mirrors = self._map_mirrors(to_install)
+        pkg_mirrors = self._map_repos(to_install)
 
         if pkg_mirrors:
             final_optdeps = {dep: {'desc': odeps.get(dep), 'mirror': pkg_mirrors.get(dep)} for dep, mirror in pkg_mirrors.items()}
@@ -642,15 +691,15 @@ class ArchManager(SoftwareManager):
 
                         if uncompress:
                             uncompress_dir = '{}/{}'.format(app_build_dir, pkgname)
-                            return self._make_pkg(pkgname=pkgname,
-                                                  maintainer=maintainer,
-                                                  root_password=root_password,
-                                                  handler=handler,
-                                                  build_dir=app_build_dir,
-                                                  project_dir=uncompress_dir,
-                                                  dependency=dependency,
-                                                  skip_optdeps=skip_optdeps,
-                                                  change_progress=change_progress)
+                            return self._build(pkgname=pkgname,
+                                               maintainer=maintainer,
+                                               root_password=root_password,
+                                               handler=handler,
+                                               build_dir=app_build_dir,
+                                               project_dir=uncompress_dir,
+                                               dependency=dependency,
+                                               skip_optdeps=skip_optdeps,
+                                               change_progress=change_progress)
         finally:
             if os.path.exists(app_build_dir):
                 handler.handle(SystemProcess(new_subprocess(['rm', '-rf', app_build_dir])))
diff --git a/bauh/gems/arch/depedencies.py b/bauh/gems/arch/depedencies.py
new file mode 100644
index 00000000..5d3774bd
--- /dev/null
+++ b/bauh/gems/arch/depedencies.py
@@ -0,0 +1,95 @@
+from threading import Thread
+from typing import Set, List, Tuple
+
+from bauh.gems.arch import pacman
+from bauh.gems.arch.aur import AURClient
+
+
+class DependenciesAnalyser:
+
+    def __init__(self, aur_client: AURClient):
+        self.aur_client = aur_client
+
+    def _fill_mirror(self, name: str, output: List[Tuple[str, str]]):
+
+        mirror = pacman.read_repository_from_info(name)
+
+        if mirror:
+            output.append((name, mirror))
+            return
+
+        guess = pacman.guess_repository(name)
+
+        if guess:
+            output.append(guess)
+            return
+
+        aur_info = self.aur_client.get_src_info(name)
+
+        if aur_info:
+            output.append((name, 'aur'))
+            return
+
+        output.append((name, ''))
+
+    def get_missing_dependencies(self, names: Set[str], mirror: str = None) -> List[Tuple[str, str]]:
+
+        missing_names = pacman.check_missing(names)
+
+        if missing_names:
+            missing_root = []
+            threads = []
+
+            if not mirror:
+                for name in missing_names:
+                    t = Thread(target=self._fill_mirror, args=(name, missing_root))
+                    t.start()
+                    threads.append(t)
+
+                for t in threads:
+                    t.join()
+
+                threads.clear()
+
+                # checking if there is any unknown dependency:
+                for dep in missing_root:
+                    if not dep[1]:
+                        return missing_root
+            else:
+                for missing in missing_names:
+                    missing_root.append((missing, mirror))
+
+            missing_sub = []
+            for dep in missing_root:
+                subdeps = self.aur_client.get_all_dependencies(dep[0]) if dep[1] == 'aur' else pacman.read_dependencies(dep[0])
+
+                if subdeps:
+                    missing_subdeps = self.get_missing_dependencies(subdeps)
+
+                    # checking if there is any unknown:
+                    if missing_subdeps:
+                        for subdep in missing_subdeps:
+                            if not subdep[0]:
+                                missing_sub.extend(missing_subdeps)
+                                break
+
+                        missing_sub.extend(missing_subdeps)
+
+            return [*missing_sub, *missing_root]
+
+    def get_missing_dependencies_from(self, names: Set[str], mirror: str) -> List[Tuple[str, str]]:
+        missing = []
+        for dep in names:
+            subdeps = self.aur_client.get_all_dependencies(dep) if mirror == 'aur' else pacman.read_dependencies(dep)
+
+            if subdeps:
+                missing_subdeps = self.get_missing_dependencies(subdeps)
+
+                if missing_subdeps:
+                    missing.extend(missing_subdeps)
+
+                    for subdep in missing_subdeps:  # checking if there is any unknown:
+                        if not subdep[0]:
+                            return missing
+
+        return missing
diff --git a/bauh/gems/arch/exceptions.py b/bauh/gems/arch/exceptions.py
new file mode 100644
index 00000000..d868cb15
--- /dev/null
+++ b/bauh/gems/arch/exceptions.py
@@ -0,0 +1,5 @@
+
+class PackageNotFoundException(Exception):
+
+    def __init__(self, name: str):
+        self.name = name
diff --git a/bauh/gems/arch/pacman.py b/bauh/gems/arch/pacman.py
index 06fe978f..5c9381ae 100644
--- a/bauh/gems/arch/pacman.py
+++ b/bauh/gems/arch/pacman.py
@@ -3,9 +3,11 @@ from threading import Thread
 from typing import List, Set, Tuple
 
 from bauh.commons.system import run_cmd, new_subprocess, new_root_subprocess, SystemProcess
+from bauh.gems.arch.exceptions import PackageNotFoundException
 
 RE_DEPS = re.compile(r'[\w\-_]+:[\s\w_\-\.]+\s+\[\w+\]')
 RE_OPTDEPS = re.compile(r'[\w\._\-]+\s*:')
+RE_DEP_NOTFOUND = re.compile(r'error:.+\'(.+)\'')
 
 
 def is_enabled() -> bool:
@@ -13,7 +15,7 @@ def is_enabled() -> bool:
     return res and not res.strip().startswith('which ')
 
 
-def get_mirror(pkg: str) -> Tuple[str, str]:
+def get_configured_repository(pkg: str) -> Tuple[str, str]:
     res = run_cmd('pacman -Ss {}'.format(pkg))
 
     if res:
@@ -24,7 +26,7 @@ def get_mirror(pkg: str) -> Tuple[str, str]:
             return data[1].split(' ')[0], data[0]
 
 
-def get_mirrors(pkgs: Set[str]) -> dict:
+def get_repositories(pkgs: Set[str]) -> dict:
     pkgre = '|'.join(pkgs).replace('+', r'\+').replace('.', r'\.')
 
     searchres = new_subprocess(['pacman', '-Ss', pkgre]).stdout
@@ -41,7 +43,7 @@ def get_mirrors(pkgs: Set[str]) -> dict:
 
     if not_found:  # if there are some packages not found, try to find via the single method:
         for dep in not_found:
-            mirror_data = get_mirror(dep)
+            mirror_data = get_configured_repository(dep)
 
             if mirror_data:
                 mirrors[mirror_data[0]] = mirror_data[1]
@@ -49,7 +51,7 @@ def get_mirrors(pkgs: Set[str]) -> dict:
     return mirrors
 
 
-def is_available_from_mirrors(pkg_name: str) -> bool:
+def is_available_in_repositories(pkg_name: str) -> bool:
     return bool(run_cmd('pacman -Ss ' + pkg_name))
 
 
@@ -236,3 +238,141 @@ def list_ignored_packages(config_path: str = '/etc/pacman.conf') -> Set[str]:
     pacman_conf.terminate()
     grep.terminate()
     return ignored
+
+
+def check_missing(names: Set[str]) -> Set[str]:
+    installed = new_subprocess(['pacman', '-Qq', *names])
+
+    not_installed = set()
+
+    for o in installed.stderr:
+        if o:
+            err_line = o.decode()
+
+            if err_line:
+                not_found = RE_DEP_NOTFOUND.findall(err_line)
+
+                if not_found:
+                    not_installed.update(not_found)
+
+    return not_installed
+
+
+def read_repository_from_info(name: str) -> str:
+    info = new_subprocess(['pacman', '-Si', name])
+
+    not_found = False
+    for o in info.stderr:
+        if o:
+            err_line = o.decode()
+            if RE_DEP_NOTFOUND.findall(err_line):
+                not_found = True
+
+    if not_found:
+        return
+
+    mirror = None
+
+    for o in new_subprocess(['grep', '-Po', "Repository\s+:\s+\K.+"], stdin=info.stdout).stdout:
+        if o:
+            line = o.decode().strip()
+
+            if line:
+                mirror = line
+
+    return mirror
+
+
+def guess_repository(name: str) -> Tuple[str, str]:
+    res = run_cmd('pacman -Ss {}'.format(name.split('=')[0] if '=' in name else name))
+
+    if res:
+        lines = res.split('\n')
+
+        if lines:
+            data = lines[0].split('/')
+            return data[1].split(' ')[0], data[0]
+
+
+def read_dependencies(name: str) -> Set[str]:
+    dep_info = new_subprocess(['pacman', '-Si', name])
+
+    not_found = False
+
+    for o in dep_info.stderr:
+        if o:
+            err_line = o.decode()
+
+            if err_line:
+                if RE_DEP_NOTFOUND.findall(err_line):
+                    not_found = True
+
+    if not_found:
+        raise PackageNotFoundException(name)
+
+    depends_on = set()
+    for out in new_subprocess(['grep', '-Po', 'Depends\s+On\s+:\s\K(.+)'], stdin=dep_info.stdout).stdout:
+        if out:
+            line = out.decode().strip()
+
+            if line:
+                depends_on.update(line.split(' '))
+
+    return depends_on
+
+"""
+def check_uninstalled(names: List[str], stop_recursion_if_no_mirror: bool = True) -> Dict[str, str]:
+    missing = {}
+    installed = new_subprocess(['pacman', '-Qq', *names])
+
+    not_installed = []
+
+    for o in installed.stderr:
+        if o:
+            err_line = o.decode()
+
+            if err_line:
+                not_found = RE_DEP_NOTFOUND.findall(err_line)
+
+                if not_found:
+                    not_installed.extend(not_found)
+
+    if not_installed:
+        missing_mirrors = False
+
+        for dep in not_installed:
+            pkgname = dep
+            not_installed_info = new_subprocess(['pacman', '-Si', dep])
+
+            mirror = None
+            for o in new_subprocess(['grep', '-Po', "Repository\s+:\s+\K.+"], stdin=not_installed_info.stdout).stdout:
+                if o:
+                    line = o.decode().strip()
+
+                    if line:
+                        mirror = line
+
+            if not mirror:
+                mirror_data = get_configured_repository(dep)
+
+                if mirror_data:
+                    pkgname = mirror_data[0]
+                    mirror = mirror_data[1]
+
+            missing[pkgname] = mirror
+
+            if mirror is None:
+                missing_mirrors = True
+
+        if stop_recursion_if_no_mirror and missing_mirrors:
+            return missing
+
+        subdeps_mirrors = dict()
+
+        for pkg in missing:
+            subdeps_mirrors.update(check_uninstalled(pkg))
+
+        missing.update(subdeps_mirrors, stop_recursion_if_no_mirror=stop_recursion_if_no_mirror)
+
+    return missing
+"""
diff --git a/bauh/gems/arch/resources/locale/ca b/bauh/gems/arch/resources/locale/ca
index 4ccf68ca..1d419dc5 100644
--- a/bauh/gems/arch/resources/locale/ca
+++ b/bauh/gems/arch/resources/locale/ca
@@ -36,7 +36,7 @@ aur.info.conflicts with=té un conflicte amb
 arch.install.conflict.popup.title=S’ha detectat un conflicte
 arch.install.conflict.popup.body=Les aplicacions {} estan en conflicte. Heu de desinstal·lar una per a instal·lar l’altra. Voleu continuar?
 arch.missing_deps.title=Dependències mancants
-arch.missing_deps.body=S’han d’instal·lar les dependències següents abans de continuar amb la instal·lació de {}
+arch.missing_deps.body=S’han d’instal·lar les {deps} dependències següents abans de continuar amb la instal·lació de {name}
 arch.downgrade.error=Error
 arch.downgrade.impossible=No s’ha pogut revertir la versió de {}
 aur.history.1_version=versió
@@ -69,8 +69,10 @@ aur.info.09_last_modified=darrera modificació
 aur.info.10_url=url de baixada
 aur.info.11_pkg_build_url=url pkgbuild
 aur.info.13_pkg_build=pkgbuild
-aur.info.11_dependson=dependències
-aur.info.12_optdepends=dependències opcionals
+aur.info.12_makedepends=dependències de compilació
+aur.info.13_dependson=dependències d’instal·lació
+aur.info.14_optdepends=dependències opcionals
+aur.info.15_checkdepends=dependències de verificació
 aur.info.14_installed_files=Fitxers instal·lats
 arch.install.dep_not_found.title=No s’ha trobat la dependència
 arch.install.dep_not_found.body=No s’ha trobat la dependència requerida {} a l’AUR ni als servidors rèplica per defecte. S’ha cancel·lat la instal·lació.
diff --git a/bauh/gems/arch/resources/locale/de b/bauh/gems/arch/resources/locale/de
index 5315ead8..deb95eee 100644
--- a/bauh/gems/arch/resources/locale/de
+++ b/bauh/gems/arch/resources/locale/de
@@ -4,7 +4,7 @@ gem.aur.install.warning=AUR Pakete werden von einer unabhängigen Nutzergemeinsc
 arch.install.conflict.popup.title=Konflikt entdeckt
 arch.install.conflict.popup.body=Die Anwendungen {} können nicht gleichzeitig installiert sein. Du musst eine deinstallieren um die andere zu installieren. Fortfahren?
 arch.missing_deps.title=Fehlende Abhängigkeiten
-arch.missing_deps.body=Die folgenden Abhängigkeiten müssten installiert sein, bevor mit der {} Installation fortgefahren werden kann
+arch.missing_deps.body=Die folgenden {deps} Abhängigkeiten müssten installiert sein, bevor mit der {name} Installation fortgefahren werden kann
 arch.downgrade.error=Fehler
 arch.downgrade.impossible=Downgrade von {} ist nicht möglich
 aur.history.1_version=Version
@@ -37,8 +37,10 @@ aur.info.09_last_modified=Zuletzt verändert
 aur.info.10_url=url zum Herunterladen
 aur.info.11_pkg_build_url=url pkgbuild
 aur.info.13_pkg_build=pkgbuild
-aur.info.11_dependson=Abhängigkeiten
-aur.info.12_optdepends=optionale Abhängigkeiten
+aur.info.12_makedepends=Kompilierungsabhängigkeiten
+aur.info.13_dependson=Installationsabhängigkeiten
+aur.info.14_optdepends=optionale Abhängigkeiten
+aur.info.15_checkdepends=Überprüfungsabhängigkeiten
 aur.info.14_installed_files=Installationsdateien
 arch.install.dep_not_found.title=Abhängigkeit nicht gefunden
 arch.install.dep_not_found.body=Nötige Abhängigkeit {} wurde weder im AUR noch in den standard Spiegelservern gefunden. Installation abgebrochen
diff --git a/bauh/gems/arch/resources/locale/en b/bauh/gems/arch/resources/locale/en
index 9dfa9425..ad58825d 100644
--- a/bauh/gems/arch/resources/locale/en
+++ b/bauh/gems/arch/resources/locale/en
@@ -4,7 +4,7 @@ gem.aur.install.warning=AUR packages are maintained by an independent user commu
 arch.install.conflict.popup.title=Conflict detected
 arch.install.conflict.popup.body=The applications {} are in conflict. You must uninstall one to install the other. Continue ?
 arch.missing_deps.title=Missing dependencies
-arch.missing_deps.body=The following dependencies must be installed before the {} installation continues
+arch.missing_deps.body=The following {deps} dependencies must be installed before the {name} installation continues
 arch.downgrade.error=Error
 arch.downgrade.impossible=It is not possible to downgrade {}
 aur.history.1_version=version
@@ -37,8 +37,10 @@ aur.info.09_last_modified=last modified
 aur.info.10_url=url download
 aur.info.11_pkg_build_url=url pkgbuild
 aur.info.13_pkg_build=pkgbuild
-aur.info.11_dependson=dependencies
-aur.info.12_optdepends=optional dependencies
+aur.info.12_makedepends=compilation dependencies
+aur.info.13_dependson=installation dependencies
+aur.info.14_optdepends=optional dependencies
+aur.info.15_checkdepends=checking dependencies
 aur.info.14_installed_files=Installed files
 arch.install.dep_not_found.title=Dependency not found
 arch.install.dep_not_found.body=Required dependency {} was not found in AUR nor in default mirrors. Installation cancelled.
diff --git a/bauh/gems/arch/resources/locale/es b/bauh/gems/arch/resources/locale/es
index 4a14dfc6..e71632e3 100644
--- a/bauh/gems/arch/resources/locale/es
+++ b/bauh/gems/arch/resources/locale/es
@@ -36,7 +36,7 @@ aur.info.conflicts with=conflicta
 arch.install.conflict.popup.title=Conflicto detectado
 arch.install.conflict.popup.body=Los aplicativos {} estan en conflicto. Debe desinstalar uno para instalar el otro. ¿Continuar?
 arch.missing_deps.title=Dependencias faltantes
-arch.missing_deps.body=Deben instalarse las siguientes dependencias antes de continuar la instalación de {}
+arch.missing_deps.body=Deben instalarse las siguientes {deps} dependencias antes de continuar la instalación de {name}
 arch.downgrade.error=Error
 arch.downgrade.impossible=No es posible revertir la versión de {}
 aur.history.1_version=versión
@@ -69,8 +69,10 @@ aur.info.09_last_modified=última modificación
 aur.info.10_url=url download
 aur.info.11_pkg_build_url=url pkgbuild
 aur.info.13_pkg_build=pkgbuild
-aur.info.11_dependson=dependencias
-aur.info.12_optdepends=dependencias opcionales
+aur.info.12_makedepends=dependencias para compilacion
+aur.info.13_dependson=dependencias para instalación
+aur.info.14_optdepends=dependencias opcionales
+aur.info.15_checkdepends=dependencias para verificación
 aur.info.14_installed_files=Archivos instalados
 arch.install.dep_not_found.title=Dependencia no encontrada
 arch.install.dep_not_found.body=No se encontró la dependencia requerida {} en AUR ni en los espejos predeterminados. Instalación cancelada.
diff --git a/bauh/gems/arch/resources/locale/it b/bauh/gems/arch/resources/locale/it
index 483d7e53..45ae9bce 100644
--- a/bauh/gems/arch/resources/locale/it
+++ b/bauh/gems/arch/resources/locale/it
@@ -4,7 +4,7 @@ gem.aur.install.warning=I pacchetti AUR sono gestiti da una comunità di utenti
 arch.install.conflict.popup.title=Conflitto rilevato
 arch.install.conflict.popup.body=Le applicazioni {} sono in conflitto. È necessario disinstallarne una per installare l'altra. Continua ?
 arch.missing_deps.title=Dipendenze mancanti
-arch.missing_deps.body=Le seguenti dipendenze devono essere installate prima che l'installazione di {} continui
+arch.missing_deps.body=Le seguenti {deps} dipendenze devono essere installate prima che l'installazione di {name} continui
 arch.downgrade.error=Errore
 arch.downgrade.impossible=Non è possibile effettuare il downgrade {}
 aur.history.1_version=versione
@@ -37,8 +37,10 @@ aur.info.09_last_modified=ultima modifica
 aur.info.10_url=url di download
 aur.info.11_pkg_build_url=url pkgbuild
 aur.info.13_pkg_build=pkgbuild
-aur.info.11_dependson=dipendenze
-aur.info.12_optdepends=dipendenze opzionali
+aur.info.12_makedepends=dipendenze di compilazione
+aur.info.13_dependson=dipendenze di installazione
+aur.info.14_optdepends=dipendenze opzionali
+aur.info.15_checkdepends=dipendenze di verifica
 aur.info.14_installed_files=File installati
 arch.install.dep_not_found.title=Dipendenza non trovata
 arch.install.dep_not_found.body=La dipendenza richiesta {} non è stata trovata in AUR né nei mirror predefiniti. Installazione annullata.
diff --git a/bauh/gems/arch/resources/locale/pt b/bauh/gems/arch/resources/locale/pt
index cc952077..266da512 100644
--- a/bauh/gems/arch/resources/locale/pt
+++ b/bauh/gems/arch/resources/locale/pt
@@ -36,7 +36,7 @@ aur.info.conflicts with=conflita
 arch.install.conflict.popup.title=Conflito detectado
 arch.install.conflict.popup.body=Os aplicativos {} estão em conflito. Você precisa desinstalar um para instalar o outro. Continuar ?
 arch.missing_deps.title=Dependências ausentes
-arch.missing_deps.body=As seguintes dependências devem ser instaladas antes de continuar com a instalação de {}
+arch.missing_deps.body=As seguintes {deps} dependências devem ser instaladas antes de continuar com a instalação de {name}
 arch.downgrade.error=Erro
 arch.downgrade.impossible=Não é possível reverter a versão de {}
 aur.history.1_version=versão
@@ -69,8 +69,10 @@ aur.info.09_last_modified=última modificação
 aur.info.10_url=url download
 aur.info.11_pkg_build_url=url pkgbuild
 aur.info.13_pkg_build=pkgbuild
-aur.info.11_dependson=dependências
-aur.info.12_optdepends=dependências opcionais
+aur.info.12_makedepends=dependências para compilação
+aur.info.13_dependson=dependências para instalação
+aur.info.14_optdepends=dependências opcionais
+aur.info.15_checkdepends=dependências para verificação
 aur.info.14_installed_files=Arquivos instalados
 arch.install.dep_not_found.title=Dependência não encontrada
 arch.install.dep_not_found.body=A dependência {} não foi encontrado no AUR nem nos espelhos padrões. Instalação cancelada.
diff --git a/bauh/gems/snap/controller.py b/bauh/gems/snap/controller.py
index cc4a5ae3..37489422 100644
--- a/bauh/gems/snap/controller.py
+++ b/bauh/gems/snap/controller.py
@@ -161,8 +161,11 @@ class SnapManager(SoftwareManager):
                 if channels:
                     opts = [InputOption(label=c[0], value=c[1]) for c in channels]
                     channel_select = SingleSelectComponent(type_=SelectViewType.RADIO, label='', options=opts, default_option=opts[0])
+                    body = '<p>{}.</p>'.format(self.i18n['snap.install.available_channels.message'].format(bold(self.i18n['stable']), bold(pkg.name)))
+                    body += '<p>{}:</p>'.format(self.i18n['snap.install.available_channels.help'])
+
                     if watcher.request_confirmation(title=self.i18n['snap.install.available_channels.title'],
-                                                    body=self.i18n['snap.install.available_channels.body'].format(bold(self.i18n['stable']), bold(pkg.name)) + ':',
+                                                    body=body,
                                                     components=[channel_select],
                                                     confirmation_label=self.i18n['continue'],
                                                     deny_label=self.i18n['cancel']):
diff --git a/bauh/gems/snap/resources/locale/ca b/bauh/gems/snap/resources/locale/ca
index 7d06be86..68bc77d6 100644
--- a/bauh/gems/snap/resources/locale/ca
+++ b/bauh/gems/snap/resources/locale/ca
@@ -15,4 +15,5 @@ snap.notifications.api.unavailable=Sembla que l’API de {} no està disponible
 snap.action.refresh.status=S’està actualitzant
 snap.action.refresh.label=Actualitza
 snap.install.available_channels.title=Canals disponibles
-snap.install.available_channels.body=No hi ha un canal {} (stable) disponible per a {}. Però més avall n’hi ha els següents (seleccioneu-ne un si voleu continuar)
+snap.install.available_channels.message=No hi ha un canal {} (stable) disponible per a {}. Però més avall n’hi ha els següents
+snap.install.available_channels.help=Seleccioneu-ne un si voleu continuar
diff --git a/bauh/gems/snap/resources/locale/de b/bauh/gems/snap/resources/locale/de
index c71ba525..445b779e 100644
--- a/bauh/gems/snap/resources/locale/de
+++ b/bauh/gems/snap/resources/locale/de
@@ -5,7 +5,8 @@ snap.notifications.api.unavailable=Es scheint als ob die {} API aktuell nicht ve
 snap.action.refresh.status=Erneuern
 snap.action.refresh.label=Erneuern
 snap.install.available_channels.title=Verfügbare Channels
-snap.install.available_channels.body=Es ist kein {} Channel verfügbar für {}. Es gibt jedoch folgende (wähle einen aus um fortzufahren)
+snap.install.available_channels.message=Es ist kein {} Channel verfügbar für {}. Es gibt jedoch folgende
+snap.install.available_channels.help=Wähle einen aus um fortzufahren
 snap.info.commands=Kommandos
 snap.info.contact=Kontakt
 snap.info.description=Beschreibung
diff --git a/bauh/gems/snap/resources/locale/en b/bauh/gems/snap/resources/locale/en
index 2155e858..a6cd99a6 100644
--- a/bauh/gems/snap/resources/locale/en
+++ b/bauh/gems/snap/resources/locale/en
@@ -5,7 +5,8 @@ snap.notifications.api.unavailable=It seems the {} API is unavailable at the mom
 snap.action.refresh.status=Refreshing
 snap.action.refresh.label=Refresh
 snap.install.available_channels.title=Available channels
-snap.install.available_channels.body=There is no {} channel available for {}. But there are these below ( select one if you want to continue )
+snap.install.available_channels.message=There is no {} channel available for {}. But there are these below
+snap.install.available_channels.help=Select one if you want to continue
 snap.info.commands=commands
 snap.info.contact=contact
 snap.info.description=description
diff --git a/bauh/gems/snap/resources/locale/es b/bauh/gems/snap/resources/locale/es
index 07e0501d..544e969b 100644
--- a/bauh/gems/snap/resources/locale/es
+++ b/bauh/gems/snap/resources/locale/es
@@ -15,4 +15,5 @@ snap.notifications.api.unavailable=Parece que la API de {} no está disponible e
 snap.action.refresh.status=Actualizando
 snap.action.refresh.label=Actualizar
 snap.install.available_channels.title=Canales disponibles
-snap.install.available_channels.body=No hay un canal {} ( stable ) disponible para {}. Pero hay estos otros abajo ( seleccione uno si desea continuar )
\ No newline at end of file
+snap.install.available_channels.message=No hay un canal {} ( stable ) disponible para {}. Pero hay estos otros abajo
+snap.install.available_channels.help=Seleccione uno si desea continuar
\ No newline at end of file
diff --git a/bauh/gems/snap/resources/locale/it b/bauh/gems/snap/resources/locale/it
index 57cf629d..86b2d0dd 100644
--- a/bauh/gems/snap/resources/locale/it
+++ b/bauh/gems/snap/resources/locale/it
@@ -5,4 +5,5 @@ snap.notifications.api.unavailable=Sembra che l'API {} non sia al momento dispon
 snap.action.refresh.status=Ripristinare
 snap.action.refresh.label=Ripristina
 snap.install.available_channels.title=Canali disponibili
-snap.install.available_channels.body=Non esiste un {} canale disponibile per {}. Ma ci sono questi sotto (selezionane uno se vuoi continuare)
+snap.install.available_channels.message=Non esiste un {} canale disponibile per {}. Ma ci sono questi sotto
+snap.install.available_channels.help=Selezionane uno se vuoi continuare
diff --git a/bauh/gems/snap/resources/locale/pt b/bauh/gems/snap/resources/locale/pt
index 4960ddc5..bf2f66e2 100644
--- a/bauh/gems/snap/resources/locale/pt
+++ b/bauh/gems/snap/resources/locale/pt
@@ -15,4 +15,5 @@ snap.notifications.api.unavailable=Parece que a API de {} está indisponível no
 snap.action.refresh.status=Atualizando
 snap.action.refresh.label=Atualizar
 snap.install.available_channels.title=Canais disponíveis
-snap.install.available_channels.body=Não há um canal {} ( stable ) disponível para {}. Porém existem estes outros abaixo ( selecione algum se quiser continuar )
\ No newline at end of file
+snap.install.available_channels.message=Não há um canal {} ( stable ) disponível para {}. Porém existem estes outros abaixo
+snap.install.available_channels.help=Selecione algum se quiser continuar
\ No newline at end of file
diff --git a/bauh/view/qt/confirmation.py b/bauh/view/qt/confirmation.py
index ceeee6ab..b169f68d 100644
--- a/bauh/view/qt/confirmation.py
+++ b/bauh/view/qt/confirmation.py
@@ -1,6 +1,7 @@
 from typing import List
 
-from PyQt5.QtWidgets import QMessageBox, QVBoxLayout, QLabel, QWidget
+from PyQt5.QtCore import QSize
+from PyQt5.QtWidgets import QMessageBox, QVBoxLayout, QLabel, QWidget, QScrollArea, QFrame
 
 from bauh.api.abstract.view import ViewComponent, SingleSelectComponent, MultipleSelectComponent
 from bauh.view.qt import css
@@ -10,7 +11,8 @@ from bauh.view.util.translation import I18n
 
 class ConfirmationDialog(QMessageBox):
 
-    def __init__(self, title: str, body: str, i18n: I18n, components: List[ViewComponent] = None, confirmation_label: str = None, deny_label: str = None):
+    def __init__(self, title: str, body: str, i18n: I18n, screen_size: QSize,  components: List[ViewComponent] = None,
+                 confirmation_label: str = None, deny_label: str = None):
         super(ConfirmationDialog, self).__init__()
         self.setWindowTitle(title)
         self.setStyleSheet('QLabel { margin-right: 25px; }')
@@ -26,8 +28,15 @@ class ConfirmationDialog(QMessageBox):
             self.layout().addWidget(QLabel(body), 0, 1)
 
         if components:
-            comps_container = QWidget(parent=self)
+            scroll = QScrollArea(self)
+            scroll.setFrameShape(QFrame.NoFrame)
+            scroll.setWidgetResizable(True)
+
+            comps_container = QWidget()
             comps_container.setLayout(QVBoxLayout())
+            scroll.setWidget(comps_container)
+
+            height = 0
 
             for idx, comp in enumerate(components):
                 if isinstance(comp, SingleSelectComponent):
@@ -37,9 +46,16 @@ class ConfirmationDialog(QMessageBox):
                 else:
                     raise Exception("Cannot render instances of " + comp.__class__.__name__)
 
+                height += inst.sizeHint().height()
                 comps_container.layout().addWidget(inst)
 
-            self.layout().addWidget(comps_container, 1, 1)
+            height = height if height < screen_size.height() / 2 else height / 2
+
+            if height < 100:
+                height = 100
+
+            scroll.setFixedHeight(height)
+            self.layout().addWidget(scroll, 1, 1)
 
         self.exec_()
 
diff --git a/bauh/view/qt/window.py b/bauh/view/qt/window.py
index 33092eb9..c7a449d2 100755
--- a/bauh/view/qt/window.py
+++ b/bauh/view/qt/window.py
@@ -379,7 +379,8 @@ class ManageWindow(QWidget):
                                   i18n=self.i18n,
                                   components=msg['components'],
                                   confirmation_label=msg['confirmation_label'],
-                                  deny_label=msg['deny_label'])
+                                  deny_label=msg['deny_label'],
+                                  screen_size=self.screen_size)
         res = diag.is_confirmed()
         self.thread_animate_progress.animate()
         self.signal_user_res.emit(res)