PLT-2992 Added the ability to use different themes for each team (#3411)

* Cleaned up user_settings_theme.jsx and import_theme_modal.jsx

* Made ImportThemeModal use a callback to return the theme to the user settings modal instead of saving it directly

* Moved user theme from model to preferences

* Added serverside API to delete preferences TODO update package with client stuff

* Changed constants.jsx so that Preferences and ActionTypes can be imported on their own

* Updated ThemeProps migration code to properly rename solarized code themes

* Fixed warnings thrown by AppDispatcher

* Added clientside UI to support team-specific themes

* Removed debugging code from test

* Fixed setting a user's theme when they haven't set their theme before

4 files changed, 108 insertions, 17 deletions

diff --git a/store/sql_preference_store.go b/store/sql_preference_store.go
index 83bf92ead..a701c3cb8 100644
--- a/store/sql_preference_store.go
+++ b/store/sql_preference_store.go
@@ -26,7 +26,7 @@ func NewSqlPreferenceStore(sqlStore *SqlStore) PreferenceStore {
 		table.ColMap("UserId").SetMaxSize(26)
 		table.ColMap("Category").SetMaxSize(32)
 		table.ColMap("Name").SetMaxSize(32)
-		table.ColMap("Value").SetMaxSize(128)
+		table.ColMap("Value").SetMaxSize(2000)
 	}
 
 	return s
@@ -100,6 +100,8 @@ func (s SqlPreferenceStore) Save(preferences *model.Preferences) StoreChannel {
 func (s SqlPreferenceStore) save(transaction *gorp.Transaction, preference *model.Preference) StoreResult {
 	result := StoreResult{}
 
+	preference.PreUpdate()
+
 	if result.Err = preference.IsValid(); result.Err != nil {
 		return result
 	}
@@ -304,3 +306,26 @@ func (s SqlPreferenceStore) IsFeatureEnabled(feature, userId string) StoreChanne
 
 	return storeChannel
 }
+
+func (s SqlPreferenceStore) Delete(userId, category, name string) StoreChannel {
+	storeChannel := make(StoreChannel)
+
+	go func() {
+		result := StoreResult{}
+
+		if _, err := s.GetMaster().Exec(
+			`DELETE FROM
+				Preferences
+			WHERE
+				UserId = :UserId
+				AND Category = :Category
+				AND Name = :Name`, map[string]interface{}{"UserId": userId, "Category": category, "Name": name}); err != nil {
+			result.Err = model.NewLocAppError("SqlPreferenceStore.Delete", "store.sql_preference.delete.app_error", nil, err.Error())
+		}
+
+		storeChannel <- result
+		close(storeChannel)
+	}()
+
+	return storeChannel
+}
diff --git a/store/sql_preference_store_test.go b/store/sql_preference_store_test.go
index ec9d1df6c..8c6a2b6af 100644
--- a/store/sql_preference_store_test.go
+++ b/store/sql_preference_store_test.go
@@ -193,7 +193,7 @@ func TestPreferenceGetAll(t *testing.T) {
 	}
 }
 
-func TestPreferenceDelete(t *testing.T) {
+func TestPreferenceDeleteByUser(t *testing.T) {
 	Setup()
 
 	userId := model.NewId()
@@ -367,3 +367,28 @@ func TestDeleteUnusedFeatures(t *testing.T) {
 		t.Fatalf("Found %d features with value 'true', expected to find at least %d features", val, 2)
 	}
 }
+
+func TestPreferenceDelete(t *testing.T) {
+	Setup()
+
+	preference := model.Preference{
+		UserId:   model.NewId(),
+		Category: model.PREFERENCE_CATEGORY_DIRECT_CHANNEL_SHOW,
+		Name:     model.NewId(),
+		Value:    "value1a",
+	}
+
+	Must(store.Preference().Save(&model.Preferences{preference}))
+
+	if prefs := Must(store.Preference().GetAll(preference.UserId)).(model.Preferences); len([]model.Preference(prefs)) != 1 {
+		t.Fatal("should've returned 1 preference")
+	}
+
+	if result := <-store.Preference().Delete(preference.UserId, preference.Category, preference.Name); result.Err != nil {
+		t.Fatal(result.Err)
+	}
+
+	if prefs := Must(store.Preference().GetAll(preference.UserId)).(model.Preferences); len([]model.Preference(prefs)) != 0 {
+		t.Fatal("should've returned no preferences")
+	}
+}
diff --git a/store/sql_user_store.go b/store/sql_user_store.go
index d4b65d04d..867445aac 100644
--- a/store/sql_user_store.go
+++ b/store/sql_user_store.go
@@ -9,7 +9,9 @@ import (
 	"fmt"
 	"strconv"
 	"strings"
+	"time"
 
+	l4g "github.com/alecthomas/log4go"
 	"github.com/mattermost/platform/model"
 	"github.com/mattermost/platform/utils"
 )
@@ -40,7 +42,6 @@ func NewSqlUserStore(sqlStore *SqlStore) UserStore {
 		table.ColMap("Roles").SetMaxSize(64)
 		table.ColMap("Props").SetMaxSize(4000)
 		table.ColMap("NotifyProps").SetMaxSize(2000)
-		table.ColMap("ThemeProps").SetMaxSize(2000)
 		table.ColMap("Locale").SetMaxSize(5)
 		table.ColMap("MfaSecret").SetMaxSize(128)
 	}
@@ -53,27 +54,66 @@ func (us SqlUserStore) UpgradeSchemaIfNeeded() {
 	us.CreateColumnIfNotExists("Users", "Locale", "varchar(5)", "character varying(5)", model.DEFAULT_LOCALE)
 
 	// ADDED for 3.2 REMOVE for 3.6
-	var data []*model.User
-	if _, err := us.GetReplica().Select(&data, "SELECT * FROM Users WHERE ThemeProps LIKE '%solarized%'"); err == nil {
-		for _, user := range data {
-			shouldUpdate := false
-			if user.ThemeProps["codeTheme"] == "solarized_dark" {
-				user.ThemeProps["codeTheme"] = "solarized-dark"
-				shouldUpdate = true
-			} else if user.ThemeProps["codeTheme"] == "solarized_light" {
-				user.ThemeProps["codeTheme"] = "solarized-light"
-				shouldUpdate = true
+	if us.DoesColumnExist("Users", "ThemeProps") {
+		params := map[string]interface{}{
+			"Category": model.PREFERENCE_CATEGORY_THEME,
+			"Name":     "",
+		}
+
+		transaction, err := us.GetMaster().Begin()
+		if err != nil {
+			themeMigrationFailed(err)
+		}
+
+		// increase size of Value column of Preferences table to match the size of the ThemeProps column
+		if utils.Cfg.SqlSettings.DriverName == model.DATABASE_DRIVER_POSTGRES {
+			if _, err := transaction.Exec("ALTER TABLE Preferences ALTER COLUMN Value TYPE varchar(2000)"); err != nil {
+				themeMigrationFailed(err)
 			}
+		} else if utils.Cfg.SqlSettings.DriverName == model.DATABASE_DRIVER_MYSQL {
+			if _, err := transaction.Exec("ALTER TABLE Preferences MODIFY Value text"); err != nil {
+				themeMigrationFailed(err)
+			}
+		}
 
-			if shouldUpdate {
-				if result := <-us.Update(user, true); result.Err != nil {
-					return
-				}
+		// copy data across
+		if _, err := transaction.Exec(
+			`INSERT INTO
+				Preferences(UserId, Category, Name, Value)
+			SELECT
+				Id, '`+model.PREFERENCE_CATEGORY_THEME+`', '', ThemeProps
+			FROM
+				Users`, params); err != nil {
+			themeMigrationFailed(err)
+		}
+
+		// delete old data
+		if _, err := transaction.Exec("ALTER TABLE Users DROP COLUMN ThemeProps"); err != nil {
+			themeMigrationFailed(err)
+		}
+
+		if err := transaction.Commit(); err != nil {
+			themeMigrationFailed(err)
+		}
+
+		// rename solarized_* code themes to solarized-* to match client changes in 3.0
+		var data model.Preferences
+		if _, err := us.GetReplica().Select(&data, "SELECT * FROM Preferences WHERE Category = '"+model.PREFERENCE_CATEGORY_THEME+"' AND Value LIKE '%solarized_%'"); err == nil {
+			for i := range data {
+				data[i].Value = strings.Replace(data[i].Value, "solarized_", "solarized-", -1)
 			}
+
+			us.Preference().Save(&data)
 		}
 	}
 }
 
+func themeMigrationFailed(err error) {
+	l4g.Critical(utils.T("store.sql_user.migrate_theme.critical"), err)
+	time.Sleep(time.Second)
+	panic(fmt.Sprintf(utils.T("store.sql_user.migrate_theme.critical"), err.Error()))
+}
+
 func (us SqlUserStore) CreateIndexesIfNotExists() {
 	us.CreateIndexIfNotExists("idx_users_email", "Users", "Email")
 }
diff --git a/store/store.go b/store/store.go
index 445de440a..0c19fd5b6 100644
--- a/store/store.go
+++ b/store/store.go
@@ -243,6 +243,7 @@ type PreferenceStore interface {
 	Get(userId string, category string, name string) StoreChannel
 	GetCategory(userId string, category string) StoreChannel
 	GetAll(userId string) StoreChannel
+	Delete(userId, category, name string) StoreChannel
 	PermanentDeleteByUser(userId string) StoreChannel
 	IsFeatureEnabled(feature, userId string) StoreChannel
 }