User action heatmap (#5131)

* Added basic heatmap data

* Added extra case for sqlite

* Built basic heatmap into user profile

* Get contribution data from api & styling

* Fixed lint & added extra group by statements for all database types

* generated swagger spec

* generated swagger spec

* generated swagger spec

* fixed swagger spec

* fmt

* Added tests

* Added setting to enable/disable user heatmap

* Added locale for loading text

* Removed UseTiDB

* Updated librejs & moment.js

* Fixed import order

* Fixed heatmap in postgresql

* Update docs/content/doc/advanced/config-cheat-sheet.en-us.md

Co-Authored-By: kolaente <konrad@kola-entertainments.de>

* Added copyright header

* Fixed a bug to show the heatmap for the actual user instead of the currently logged in

* Added integration test for heatmaps

* Added a heatmap on the dashboard

* Fixed timestamp parsing

* Hide heatmap on mobile

* optimized postgresql group by query

* Improved sqlite group by statement

models/user_heatmap.go

@@ -0,0 +1,40 @@
+// Copyright 2018 The Gitea Authors. All rights reserved.
+// Use of this source code is governed by a MIT-style
+// license that can be found in the LICENSE file.package models
+
+package models
+
+import (
+	"code.gitea.io/gitea/modules/setting"
+	"code.gitea.io/gitea/modules/util"
+)
+
+// UserHeatmapData represents the data needed to create a heatmap
+type UserHeatmapData struct {
+	Timestamp     util.TimeStamp `json:"timestamp"`
+	Contributions int64          `json:"contributions"`
+}
+
+// GetUserHeatmapDataByUser returns an array of UserHeatmapData
+func GetUserHeatmapDataByUser(user *User) (hdata []*UserHeatmapData, err error) {
+	var groupBy string
+	switch {
+	case setting.UseSQLite3:
+		groupBy = "strftime('%s', strftime('%Y-%m-%d', created_unix, 'unixepoch'))"
+	case setting.UseMySQL:
+		groupBy = "UNIX_TIMESTAMP(DATE_FORMAT(FROM_UNIXTIME(created_unix), '%Y%m%d'))"
+	case setting.UsePostgreSQL:
+		groupBy = "extract(epoch from date_trunc('day', to_timestamp(created_unix)))"
+	case setting.UseMSSQL:
+		groupBy = "dateadd(DAY,0, datediff(day,0, dateadd(s, created_unix, '19700101')))"
+	}
+
+	err = x.Select(groupBy+" as timestamp, count(user_id) as contributions").
+		Table("action").
+		Where("user_id = ?", user.ID).
+		And("created_unix > ?", (util.TimeStampNow() - 31536000)).
+		GroupBy("timestamp").
+		OrderBy("timestamp").
+		Find(&hdata)
+	return
+}