Make PKC potentially compatible with several database schemas

resources/language/resource.language.en_gb/strings.po

@@ -1221,7 +1221,7 @@ msgid " may not work correctly until the database is reset."
 msgstr ""
 
 msgctxt "#39403"
-msgid "Cancelling the database syncing process. Current Kodi version is unsupported. Please verify your logs for more info."
+msgid "The current Kodi version is not supported by PKC. Please consult the Plex forum."
 msgstr ""
 
 msgctxt "#39405"

resources/lib/kodi_db/__init__.py

@@ -75,7 +75,7 @@ def setup_kodi_default_entries():
                         iNeedsScan,
                         lastscanned)
                     VALUES (?, ?, ?)
-                ''', (v.DB_MUSIC_VERSION[v.KODIVERSION],
+                ''', (v.DB_MUSIC_VERSION,
                       0,
                       timing.kodi_now()))
 

resources/lib/service_entry.py

@@ -42,6 +42,19 @@ class Service():
     plexcompanion = None
 
     def __init__(self):
+        self._init_done = False
+        # Kodi Version supported by PKC?
+        try:
+            v.database_paths()
+        except RuntimeError as err:
+
+            # Database does not exists
+            LOG.error('The current Kodi version is incompatible')
+            LOG.error('Error: %s', err)
+            # "The current Kodi version is not supported by PKC. Please consult
+            # the Plex forum."
+            utils.messageDialog(utils.lang(29999), utils.lang(39403))
+            return
         # Initial logging
         LOG.info("======== START %s ========", v.ADDON_NAME)
         LOG.info("Platform: %s", v.PLATFORM)
@@ -63,6 +76,9 @@ class Service():
         LOG.info('Play playlist prefix: %s',
                  utils.settings('syncSpecificPlexPlaylistsPrefix'))
         LOG.info("Db version: %s", utils.settings('dbCreatedWithVersion'))
+        LOG.info('Kodi video database version: %s', v.DB_VIDEO_VERSION)
+        LOG.info('Kodi music database version: %s', v.DB_MUSIC_VERSION)
+        LOG.info('Kodi texture database version: %s', v.DB_TEXTURE_VERSION)
 
         # Reset some status in the PKC settings
         # toggled to "No"
@@ -93,6 +109,7 @@ class Service():
         # Flags for other threads
         self.connection_check_running = False
         self.auth_running = False
+        self._init_done = True
 
     def isCanceled(self):
         return xbmc.abortRequested or app.APP.stop_pkc
@@ -336,6 +353,8 @@ class Service():
             return True
 
     def ServiceEntryPoint(self):
+        if not self._init_done:
+            return
         # Important: Threads depending on abortRequest will not trigger
         # if profile switch happens more than once.
         # Some plumbing

resources/lib/sync.py

@@ -6,7 +6,7 @@ import xbmc
 
 from .downloadutils import DownloadUtils as DU
 from . import library_sync, timing
-from . import backgroundthread, utils, path_ops, artwork, variables as v, app
+from . import backgroundthread, utils, artwork, variables as v, app
 from . import kodi_db
 
 LOG = getLogger('PLEX.sync')
@@ -188,17 +188,6 @@ class Sync(backgroundthread.KillableThread):
         # Link to Websocket queue
         queue = app.APP.websocket_queue
 
-        # Kodi Version supported by PKC?
-        if (not path_ops.exists(v.DB_VIDEO_PATH) or
-                not path_ops.exists(v.DB_TEXTURE_PATH) or
-                (app.SYNC.enable_music and not path_ops.exists(v.DB_MUSIC_PATH))):
-            # Database does not exists
-            LOG.error('The current Kodi version is incompatible')
-            LOG.error('Current Kodi version: %s', utils.try_decode(
-                xbmc.getInfoLabel('System.BuildVersion')))
-            # "Current Kodi version is unsupported, cancel lib sync"
-            utils.messageDialog(utils.lang(29999), utils.lang(39403))
-            return
         # Check whether we need to reset the Kodi DB
         if install_sync_done:
             current_version = utils.settings('dbCreatedWithVersion')

resources/lib/variables.py

@@ -3,9 +3,13 @@
 from __future__ import absolute_import, division, unicode_literals
 import os
 import sys
+import re
+
 import xbmc
 from xbmcaddon import Addon
 
+from . import path_ops
+
 # Paths are in unicode, otherwise Windows will throw fits
 # For any file operations with KODI function, use encoded strings!
 
@@ -89,28 +93,55 @@ PKC_MACHINE_IDENTIFIER = None
 # Minimal PKC version needed for the Kodi database - otherwise need to recreate
 MIN_DB_VERSION = '2.5.12'
 
-# Database paths
-DB_VIDEO_VERSION = {
-    17: 107,  # Krypton
-    18: 113   # Leia
+# Supported databases
+SUPPORTED_VIDEO_DB = {
+    # Kodi 17 Krypton:
+    17: {
+        107: 107,
+    },
+    # Kodi 18 Leia:
+    18: {
+        113: 113,
+    },
+    # Kodi 19 - EXTREMLY EXPERIMENTAL!
+    19: {
+        113: 113,
+    }
 }
-DB_VIDEO_PATH = try_decode(xbmc.translatePath(
-    "special://database/MyVideos%s.db" % DB_VIDEO_VERSION[KODIVERSION]))
-
-DB_MUSIC_VERSION = {
-    17: 60,   # Krypton
-    18: 72    # Leia
+SUPPORTED_MUSIC_DB = {
+    # Kodi 17 Krypton:
+    17: {
+        60: 60,
+    },
+    # Kodi 18 Leia:
+    18: {
+        72: 72,
+    },
+    # Kodi 19 - EXTREMLY EXPERIMENTAL!
+    19: {
+        72: 72,
+    }
 }
-DB_MUSIC_PATH = try_decode(xbmc.translatePath(
-    "special://database/MyMusic%s.db" % DB_MUSIC_VERSION[KODIVERSION]))
-
-DB_TEXTURE_VERSION = {
-    17: 13,   # Krypton
-    18: 13    # Leia
+SUPPORTED_TEXTURE_DB = {
+    # Kodi 17 Krypton:
+    17: {
+        13: 13,
+    },
+    # Kodi 18 Leia:
+    18: {
+        13: 13,
+    },
+    # Kodi 19 - EXTREMLY EXPERIMENTAL!
+    19: {
+        13: 13,
+    }
 }
-DB_TEXTURE_PATH = try_decode(xbmc.translatePath(
-    "special://database/Textures%s.db" % DB_TEXTURE_VERSION[KODIVERSION]))
-
+DB_VIDEO_VERSION = None
+DB_VIDEO_PATH = None
+DB_MUSIC_VERSION = None
+DB_MUSIC_PATH = None
+DB_TEXTURE_VERSION = None
+DB_TEXTURE_PATH = None
 DB_PLEX_PATH = try_decode(xbmc.translatePath("special://database/plex.db"))
 
 EXTERNAL_SUBTITLE_TEMP_PATH = try_decode(xbmc.translatePath(
@@ -551,6 +582,57 @@ PLEX_STREAM_TYPE_FROM_STREAM_TYPE = {
     'subtitle': '3'
 }
 
+
+def database_paths():
+    '''
+    Set the Kodi database paths. Will raise a RuntimeError if the DBs are
+    not found or of a wrong, unsupported version
+    '''
+    global DB_VIDEO_VERSION, DB_VIDEO_PATH
+    global DB_MUSIC_VERSION, DB_MUSIC_PATH
+    global DB_TEXTURE_VERSION, DB_TEXTURE_PATH
+    database_path = try_decode(xbmc.translatePath('special://database'))
+    video_versions = []
+    music_versions = []
+    texture_versions = []
+    types = (
+        (re.compile(r'''MyVideos(\d+).db'''), video_versions),
+        (re.compile(r'''MyMusic(\d+).db'''), music_versions),
+        (re.compile(r'''Textures(\d+).db'''), texture_versions)
+    )
+    for root, _, files in path_ops.walk(database_path):
+        for file in files:
+            for typus in types:
+                match = typus[0].search(path_ops.path.join(root, file))
+                if not match:
+                    continue
+                typus[1].append(int(match.group(1)))
+    try:
+        DB_VIDEO_VERSION = max(video_versions)
+        SUPPORTED_VIDEO_DB[KODIVERSION][DB_VIDEO_VERSION]
+        DB_VIDEO_PATH = path_ops.path.join(database_path,
+                                           'MyVideos%s.db' % DB_VIDEO_VERSION)
+    except (ValueError, KeyError):
+        raise RuntimeError('Video DB %s not supported'
+                           % DB_VIDEO_VERSION)
+    try:
+        DB_MUSIC_VERSION = max(music_versions)
+        SUPPORTED_MUSIC_DB[KODIVERSION][DB_MUSIC_VERSION]
+        DB_MUSIC_PATH = path_ops.path.join(database_path,
+                                           'MyMusic%s.db' % DB_MUSIC_VERSION)
+    except (ValueError, KeyError):
+        raise RuntimeError('Music DB %s not supported'
+                           % DB_MUSIC_VERSION)
+    try:
+        DB_TEXTURE_VERSION = max(texture_versions)
+        SUPPORTED_TEXTURE_DB[KODIVERSION][DB_TEXTURE_VERSION]
+        DB_TEXTURE_PATH = path_ops.path.join(database_path,
+                                             'Textures%s.db' % DB_TEXTURE_VERSION)
+    except (ValueError, KeyError):
+        raise RuntimeError('Texture DB %s not supported'
+                           % DB_TEXTURE_VERSION)
+
+
 # Encoding to be used for our m3u playlist files
 # m3u files do not have encoding specified by definition, unfortunately.
 if PLATFORM == 'Windows':