Mono repo -> Master (#22553)

Combines the following repositories into one:

https://github.com/mattermost/mattermost-server
https://github.com/mattermost/mattermost-webapp
https://github.com/mattermost/focalboard
https://github.com/mattermost/mattermost-plugin-playbooks

server/channels/db/migrations/mysql/000026_create_preferences.up.sql

@@ -0,0 +1,106 @@
+CREATE TABLE IF NOT EXISTS Preferences (
+    UserId varchar(26) NOT NULL,
+    Category varchar(32) NOT NULL,
+    Name varchar(32) NOT NULL,
+    Value text,
+    PRIMARY KEY (UserId, Category, Name)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
+
+SET @preparedStatement = (SELECT IF(
+    (
+        SELECT COUNT(*) FROM INFORMATION_SCHEMA.COLUMNS
+        WHERE table_name = 'Preferences'
+        AND table_schema = DATABASE()
+        AND column_name = 'Value'
+        AND data_type != 'text'
+    ) > 0,
+    'ALTER TABLE Preferences MODIFY Value text;',
+    'SELECT 1'
+));
+
+PREPARE alterIfExists FROM @preparedStatement;
+EXECUTE alterIfExists;
+DEALLOCATE PREPARE alterIfExists;
+
+SET @preparedStatement = (SELECT IF(
+    (
+        SELECT COUNT(*) FROM INFORMATION_SCHEMA.STATISTICS
+        WHERE table_name = 'Preferences'
+        AND table_schema = DATABASE()
+        AND index_name = 'idx_preferences_category'
+    ) > 0,
+    'SELECT 1',
+    'CREATE INDEX idx_preferences_category ON Preferences(Category);'
+));
+
+PREPARE createIndexIfNotExists FROM @preparedStatement;
+EXECUTE createIndexIfNotExists;
+DEALLOCATE PREPARE createIndexIfNotExists;
+
+SET @preparedStatement = (SELECT IF(
+    (
+        SELECT COUNT(*) FROM INFORMATION_SCHEMA.STATISTICS
+        WHERE table_name = 'Preferences'
+        AND table_schema = DATABASE()
+        AND index_name = 'idx_preferences_name'
+    ) > 0,
+    'SELECT 1',
+    'CREATE INDEX idx_preferences_name ON Preferences(Name);'
+));
+
+PREPARE createIndexIfNotExists FROM @preparedStatement;
+EXECUTE createIndexIfNotExists;
+DEALLOCATE PREPARE createIndexIfNotExists;
+
+CREATE PROCEDURE RenameSolarizedThemeWithUnderscore()
+BEGIN
+    DECLARE finished INTEGER DEFAULT 0;
+    DECLARE curUserId VARCHAR(26);
+    DECLARE curName VARCHAR(32);
+    DECLARE curValue text;
+
+    DECLARE preference
+        CURSOR FOR
+            SELECT UserId, Name, Value
+            FROM Preferences
+            WHERE Category = 'theme' AND Value LIKE '%solarized_%';
+
+    -- declare NOT FOUND handler
+    DECLARE CONTINUE HANDLER
+    FOR NOT FOUND SET finished = 1;
+
+    OPEN preference;
+
+    getPreference: LOOP
+        FETCH preference INTO curUserId, curName, curValue;
+        IF finished = 1 THEN
+            LEAVE getPreference;
+        END IF;
+
+        -- update affected rows
+        UPDATE Preferences
+        SET Value = replace(curValue, 'solaraized_', 'solarized-')
+        WHERE Category = 'theme'
+        AND UserId = curUserId
+        AND Name = curName;
+    END LOOP getPreference;
+END;
+
+CALL RenameSolarizedThemeWithUnderscore();
+
+DROP PROCEDURE IF EXISTS RenameSolarizedThemeWithUnderscore;
+
+SET @preparedStatement = (SELECT IF(
+    (
+        SELECT COUNT(*) FROM INFORMATION_SCHEMA.STATISTICS
+        WHERE table_name = 'Preferences'
+        AND table_schema = DATABASE()
+        AND index_name = 'idx_preferences_user_id'
+    ) > 0,
+    'DROP INDEX idx_preferences_user_id ON Preferences;',
+    'SELECT 1'
+));
+
+PREPARE removeIndexIfExists FROM @preparedStatement;
+EXECUTE removeIndexIfExists;
+DEALLOCATE PREPARE removeIndexIfExists;