package web

import (
	"net/http"
	"strconv"
	"strings"
	"unicode/utf8"
	"videoweb/app/service/commentser"
	"videoweb/pub/common/log"
	"videoweb/pub/common/useragent"

	"github.com/gin-gonic/gin"
)

// CommentList 代理上游 GET /api/app/comment/list（加载更多等）。
func CommentList(c *gin.Context) {
	objectID, _ := strconv.ParseInt(c.Query("objectId"), 10, 64)
	objectType, _ := strconv.Atoi(c.Query("objectType"))
	pageNum, _ := strconv.Atoi(c.Query("pageNum"))
	pageSize, _ := strconv.Atoi(c.Query("pageSize"))
	sortOrder, _ := strconv.Atoi(c.Query("sortOrder"))

	q := commentser.ListQuery{
		ObjectID:   objectID,
		ObjectType: objectType,
		PageNum:    pageNum,
		PageSize:   pageSize,
		SortOrder:  sortOrder,
	}
	if q.ObjectID <= 0 {
		c.JSON(http.StatusOK, gin.H{
			"code": 1001,
			"msg":  "参数错误",
			"tip":  "缺少 objectId",
			"data": nil,
		})
		return
	}

	data, err := commentser.FetchList(c, q)
	if err != nil {
		log.Error("comment list upstream failed", log.E(err))
		c.JSON(http.StatusOK, gin.H{
			"code": 500,
			"msg":  "comment list failed",
			"tip":  "获取评论失败，请稍后重试",
			"data": nil,
		})
		return
	}
	c.JSON(http.StatusOK, gin.H{
		"code": 200,
		"msg":  "success",
		"tip":  "成功",
		"data": data,
	})
}

type commentSendBody struct {
	ObjectID       int64  `json:"objectId"`
	ObjectType     int    `json:"objectType"`
	Text           string `json:"text"`
	ParentsID      int64  `json:"parentsId"`
	ReplyCommentID int64  `json:"replyCommentId"`
}

// CommentSend 代理上游 POST /api/app/comment/send。
// parentsId=0 一级评论；parentsId>0 二级评论；replyCommentId 为实际被回复评论。
func CommentSend(c *gin.Context) {
	if useragent.TokenFromRequest(c.Request) == "" {
		c.JSON(http.StatusOK, gin.H{
			"code": 401,
			"msg":  "unauthorized",
			"tip":  "请先登录后再发表评论",
			"data": nil,
		})
		return
	}

	var body commentSendBody
	if err := c.ShouldBindJSON(&body); err != nil {
		c.JSON(http.StatusBadRequest, gin.H{
			"code": 1001,
			"msg":  "参数错误",
			"tip":  "参数错误",
			"data": nil,
		})
		return
	}

	body.Text = strings.TrimSpace(body.Text)
	if body.ObjectID <= 0 {
		c.JSON(http.StatusOK, gin.H{
			"code": 1001,
			"msg":  "参数错误",
			"tip":  "缺少 objectId",
			"data": nil,
		})
		return
	}
	if body.ObjectType != commentser.ObjectTypeChapter {
		body.ObjectType = commentser.ObjectTypePlaylet
	}
	if body.Text == "" {
		c.JSON(http.StatusOK, gin.H{
			"code": 1001,
			"msg":  "参数错误",
			"tip":  "请输入评论内容",
			"data": nil,
		})
		return
	}
	if utf8.RuneCountInString(body.Text) > 200 {
		c.JSON(http.StatusOK, gin.H{
			"code": 1001,
			"msg":  "参数错误",
			"tip":  "评论最多 200 字",
			"data": nil,
		})
		return
	}
	if body.ParentsID < 0 {
		body.ParentsID = 0
	}
	if body.ReplyCommentID < 0 {
		body.ReplyCommentID = 0
	}

	env, err := commentser.Send(c, commentser.CommentSendReq{
		ObjectID:       body.ObjectID,
		ObjectType:     body.ObjectType,
		Text:           body.Text,
		ParentsID:      body.ParentsID,
		ReplyCommentID: body.ReplyCommentID,
	})
	if err != nil {
		log.Error("comment send upstream failed", log.E(err))
		c.JSON(http.StatusOK, gin.H{
			"code": 500,
			"msg":  "comment send failed",
			"tip":  "发表失败，请稍后重试",
			"data": nil,
		})
		return
	}
	if env != nil && TryJSONSessionRecover(c, env.Code) {
		env, err = commentser.Send(c, commentser.CommentSendReq{
			ObjectID:       body.ObjectID,
			ObjectType:     body.ObjectType,
			Text:           body.Text,
			ParentsID:      body.ParentsID,
			ReplyCommentID: body.ReplyCommentID,
		})
		if err != nil {
			log.Error("comment send retry failed", log.E(err))
			c.JSON(http.StatusOK, gin.H{
				"code": 500,
				"msg":  "comment send failed",
				"tip":  "发表失败，请稍后重试",
				"data": nil,
			})
			return
		}
	}
	if env == nil || env.Code != 200 {
		tip := "发表失败"
		msg := ""
		code := 500
		if env != nil {
			code = env.Code
			msg = env.Msg
			tip = firstNonEmpty(env.Tip, env.Msg, tip)
		}
		c.JSON(http.StatusOK, gin.H{
			"code": code,
			"msg":  msg,
			"tip":  tip,
			"data": nil,
		})
		return
	}

	c.JSON(http.StatusOK, gin.H{
		"code": 200,
		"msg":  firstNonEmpty(env.Msg, "success"),
		"tip":  firstNonEmpty(env.Tip, "发表成功"),
		"data": env.Data,
	})
}

type commentLikeBody struct {
	CommentID int64 `json:"commentId"`
	IsLike    *bool `json:"isLike"`
}

// CommentLikeSet 代理上游 POST /api/app/comment/like/set。
func CommentLikeSet(c *gin.Context) {
	if useragent.TokenFromRequest(c.Request) == "" {
		c.JSON(http.StatusOK, gin.H{
			"code": 401,
			"msg":  "unauthorized",
			"tip":  "请先登录后再点赞",
			"data": nil,
		})
		return
	}

	var body commentLikeBody
	if err := c.ShouldBindJSON(&body); err != nil {
		c.JSON(http.StatusBadRequest, gin.H{
			"code": 1001,
			"msg":  "参数错误",
			"tip":  "参数错误",
			"data": nil,
		})
		return
	}
	if body.CommentID <= 0 || body.IsLike == nil {
		c.JSON(http.StatusOK, gin.H{
			"code": 1001,
			"msg":  "参数错误",
			"tip":  "缺少 commentId 或 isLike",
			"data": nil,
		})
		return
	}

	env, err := commentser.LikeSet(c, commentser.CommentLikeSetReq{
		CommentID: body.CommentID,
		IsLike:    *body.IsLike,
	})
	if err != nil {
		log.Error("comment like set upstream failed", log.E(err))
		c.JSON(http.StatusOK, gin.H{
			"code": 500,
			"msg":  "comment like failed",
			"tip":  "操作失败，请稍后重试",
			"data": nil,
		})
		return
	}
	if env != nil && TryJSONSessionRecover(c, env.Code) {
		env, err = commentser.LikeSet(c, commentser.CommentLikeSetReq{
			CommentID: body.CommentID,
			IsLike:    *body.IsLike,
		})
		if err != nil {
			log.Error("comment like set retry failed", log.E(err))
			c.JSON(http.StatusOK, gin.H{
				"code": 500,
				"msg":  "comment like failed",
				"tip":  "操作失败，请稍后重试",
				"data": nil,
			})
			return
		}
	}
	if env == nil || env.Code != 200 {
		tip := "操作失败"
		msg := ""
		code := 500
		if env != nil {
			code = env.Code
			msg = env.Msg
			tip = firstNonEmpty(env.Tip, env.Msg, tip)
		}
		c.JSON(http.StatusOK, gin.H{
			"code": code,
			"msg":  msg,
			"tip":  tip,
			"data": nil,
		})
		return
	}

	c.JSON(http.StatusOK, gin.H{
		"code": 200,
		"msg":  firstNonEmpty(env.Msg, "success"),
		"tip":  firstNonEmpty(env.Tip, "成功"),
		"data": env.Data,
	})
}