package handler

// * +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
// * Copyright 2023 The Geek-AI Authors. All rights reserved.
// * Use of this source code is governed by a Apache-2.0 license
// * that can be found in the LICENSE file.
// * @Author yangjian102621@163.com
// * +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

import (
	"fmt"
	"geekai/core"
	"geekai/core/types"
	"geekai/service/oss"
	"geekai/service/suno"
	"geekai/store/model"
	"geekai/store/vo"
	"geekai/utils"
	"geekai/utils/resp"
	"github.com/gin-gonic/gin"
	"github.com/gorilla/websocket"
	"gorm.io/gorm"
	"net/http"
	"time"
)

type SunoHandler struct {
	BaseHandler
	service  *suno.Service
	uploader *oss.UploaderManager
}

func NewSunoHandler(app *core.AppServer, db *gorm.DB, service *suno.Service, uploader *oss.UploaderManager) *SunoHandler {
	return &SunoHandler{
		BaseHandler: BaseHandler{
			App: app,
			DB:  db,
		},
		service:  service,
		uploader: uploader,
	}
}

// Client WebSocket 客户端，用于通知任务状态变更
func (h *SunoHandler) Client(c *gin.Context) {
	ws, err := (&websocket.Upgrader{CheckOrigin: func(r *http.Request) bool { return true }}).Upgrade(c.Writer, c.Request, nil)
	if err != nil {
		logger.Error(err)
		c.Abort()
		return
	}

	userId := h.GetInt(c, "user_id", 0)
	if userId == 0 {
		logger.Info("Invalid user ID")
		c.Abort()
		return
	}

	client := types.NewWsClient(ws)
	h.service.Clients.Put(uint(userId), client)
	logger.Infof("New websocket connected, IP: %s", c.RemoteIP())
}

func (h *SunoHandler) Create(c *gin.Context) {

	var data struct {
		Prompt       string `json:"prompt"`
		Instrumental bool   `json:"instrumental"`
		Lyrics       string `json:"lyrics"`
		Model        string `json:"model"`
		Tags         string `json:"tags"`
		Title        string `json:"title"`
		Type         int    `json:"type"`
		RefTaskId    string `json:"ref_task_id"` // 续写的任务id
		ExtendSecs   int    `json:"extend_secs"` // 续写秒数
		RefSongId    string `json:"ref_song_id"` // 续写的歌曲id
	}
	if err := c.ShouldBindJSON(&data); err != nil {
		resp.ERROR(c, types.InvalidArgs)
		return
	}

	// 插入数据库
	job := model.SunoJob{
		UserId:       int(h.GetLoginUserId(c)),
		Prompt:       data.Prompt,
		Instrumental: data.Instrumental,
		ModelName:    data.Model,
		Tags:         data.Tags,
		Title:        data.Title,
		Type:         data.Type,
		RefSongId:    data.RefSongId,
		RefTaskId:    data.RefTaskId,
		ExtendSecs:   data.ExtendSecs,
		Power:        h.App.SysConfig.SunoPower,
	}
	if data.Lyrics != "" {
		job.Prompt = data.Lyrics
	}
	tx := h.DB.Create(&job)
	if tx.Error != nil {
		resp.ERROR(c, tx.Error.Error())
		return
	}

	// 创建任务
	h.service.PushTask(types.SunoTask{
		Id:           job.Id,
		UserId:       job.UserId,
		Type:         job.Type,
		Title:        job.Title,
		RefTaskId:    data.RefTaskId,
		RefSongId:    data.RefSongId,
		ExtendSecs:   data.ExtendSecs,
		Prompt:       data.Prompt,
		Tags:         data.Tags,
		Model:        data.Model,
		Instrumental: data.Instrumental,
	})

	// update user's power
	tx = h.DB.Model(&model.User{}).Where("id = ?", job.UserId).UpdateColumn("power", gorm.Expr("power - ?", job.Power))
	// 记录算力变化日志
	if tx.Error == nil && tx.RowsAffected > 0 {
		user, _ := h.GetLoginUser(c)
		h.DB.Create(&model.PowerLog{
			UserId:    user.Id,
			Username:  user.Username,
			Type:      types.PowerConsume,
			Amount:    job.Power,
			Balance:   user.Power - job.Power,
			Mark:      types.PowerSub,
			Model:     job.ModelName,
			Remark:    fmt.Sprintf("Suno 文生歌曲，%s", job.ModelName),
			CreatedAt: time.Now(),
		})
	}

	client := h.service.Clients.Get(uint(job.UserId))
	if client != nil {
		_ = client.Send([]byte("Task Updated"))
	}
	resp.SUCCESS(c)
}

func (h *SunoHandler) List(c *gin.Context) {
	userId := h.GetLoginUserId(c)
	page := h.GetInt(c, "page", 0)
	pageSize := h.GetInt(c, "page_size", 0)
	session := h.DB.Session(&gorm.Session{}).Where("user_id", userId)

	// 统计总数
	var total int64
	session.Debug().Model(&model.SunoJob{}).Count(&total)

	if page > 0 && pageSize > 0 {
		offset := (page - 1) * pageSize
		session = session.Offset(offset).Limit(pageSize)
	}
	var list []model.SunoJob
	err := session.Order("id desc").Find(&list).Error
	if err != nil {
		resp.ERROR(c, err.Error())
		return
	}

	// 转换为 VO
	items := make([]vo.SunoJob, 0)
	for _, v := range list {
		var item vo.SunoJob
		err = utils.CopyObject(v, &item)
		if err != nil {
			continue
		}
		items = append(items, item)
	}

	resp.SUCCESS(c, vo.NewPage(total, page, pageSize, items))
}

func (h *SunoHandler) Remove(c *gin.Context) {
	id := h.GetInt(c, "id", 0)
	userId := h.GetLoginUserId(c)
	var job model.SunoJob
	err := h.DB.Where("id = ?", id).Where("user_id", userId).First(&job).Error
	if err != nil {
		resp.ERROR(c, err.Error())
		return
	}
	// 删除任务
	h.DB.Delete(&job)
	// 删除文件
	_ = h.uploader.GetUploadHandler().Delete(job.ThumbImgURL)
	_ = h.uploader.GetUploadHandler().Delete(job.CoverImgURL)
	_ = h.uploader.GetUploadHandler().Delete(job.AudioURL)
}

func (h *SunoHandler) Publish(c *gin.Context) {
	id := h.GetInt(c, "id", 0)
	userId := h.GetLoginUserId(c)
	publish := h.GetBool(c, "publish")
	err := h.DB.Model(&model.SunoJob{}).Where("id", id).Where("user_id", userId).UpdateColumn("publish", publish).Error
	if err != nil {
		resp.ERROR(c, err.Error())
		return
	}

	resp.SUCCESS(c)
}