package handler

import (
	"strconv"

	"github.com/casehub/ticket-workbench/internal/dto"
	"github.com/casehub/ticket-workbench/internal/middleware"
	"github.com/casehub/ticket-workbench/internal/service"
	"github.com/gin-gonic/gin"
	"gorm.io/gorm"
)

func ListTickets(db *gorm.DB) gin.HandlerFunc {
	return func(c *gin.Context) {
		var query dto.TicketListQuery
		if err := c.ShouldBindQuery(&query); err != nil {
			c.JSON(200, dto.Fail("参数错误"))
			return
		}

		if query.Page <= 0 {
			query.Page = 1
		}
		if query.PageSize <= 0 {
			query.PageSize = 20
		}

		result, err := service.ListTickets(db, query.Status, query.Category, query.Priority, query.Keyword, query.Page, query.PageSize)
		if err != nil {
			c.JSON(200, dto.Fail("查询失败"))
			return
		}

		c.JSON(200, dto.Success(result))
	}
}

func GetTicket(db *gorm.DB) gin.HandlerFunc {
	return func(c *gin.Context) {
		idStr := c.Param("id")
		id, err := strconv.Atoi(idStr)
		if err != nil {
			c.JSON(200, dto.Fail("参数错误"))
			return
		}

		ticket, err := service.GetTicketByID(db, id)
		if err != nil {
			c.JSON(200, dto.Fail("工单不存在"))
			return
		}

		c.JSON(200, dto.Success(ticket))
	}
}

func CreateTicket(db *gorm.DB) gin.HandlerFunc {
	return func(c *gin.Context) {
		var req dto.CreateTicketRequest
		if err := c.ShouldBindJSON(&req); err != nil {
			c.JSON(200, dto.Fail("参数错误"))
			return
		}

		user := middleware.GetCurrentUser(c)
		if user == nil {
			c.JSON(200, dto.Fail("未登录"))
			return
		}

		ticket, err := service.CreateTicket(db, req.Title, req.Content, req.Contactname, req.Contactphone, req.Source, req.Category, req.Priority, user.Userid)
		if err != nil {
			c.JSON(200, dto.Fail("创建失败"))
			return
		}

		c.JSON(200, dto.Success(ticket))
	}
}

func UpdateTicket(db *gorm.DB) gin.HandlerFunc {
	return func(c *gin.Context) {
		idStr := c.Param("id")
		id, err := strconv.Atoi(idStr)
		if err != nil {
			c.JSON(200, dto.Fail("参数错误"))
			return
		}

		var req dto.UpdateTicketRequest
		if err := c.ShouldBindJSON(&req); err != nil {
			c.JSON(200, dto.Fail("参数错误"))
			return
		}

		user := middleware.GetCurrentUser(c)
		if user == nil {
			c.JSON(200, dto.Fail("未登录"))
			return
		}

		err = service.UpdateTicket(db, id, req.Title, req.Content, req.Contactname, req.Contactphone, req.Category, req.Priority, req.Handlerid, user.Userid)
		if err != nil {
			c.JSON(200, dto.Fail("更新失败"))
			return
		}

		c.JSON(200, dto.Success(nil))
	}
}

func UpdateTicketStatus(db *gorm.DB) gin.HandlerFunc {
	return func(c *gin.Context) {
		idStr := c.Param("id")
		id, err := strconv.Atoi(idStr)
		if err != nil {
			c.JSON(200, dto.Fail("参数错误"))
			return
		}

		var req dto.UpdateStatusRequest
		if err := c.ShouldBindJSON(&req); err != nil {
			c.JSON(200, dto.Fail("参数错误"))
			return
		}

		user := middleware.GetCurrentUser(c)
		if user == nil {
			c.JSON(200, dto.Fail("未登录"))
			return
		}

		err = service.UpdateTicketStatus(db, id, req.Status, user.Userid)
		if err != nil {
			c.JSON(200, dto.Fail("更新失败"))
			return
		}

		c.JSON(200, dto.Success(nil))
	}
}

func GetOperationLogs(db *gorm.DB) gin.HandlerFunc {
	return func(c *gin.Context) {
		idStr := c.Param("id")
		id, err := strconv.Atoi(idStr)
		if err != nil {
			c.JSON(200, dto.Fail("参数错误"))
			return
		}

		logs, err := service.GetOperationLogs(db, id)
		if err != nil {
			c.JSON(200, dto.Fail("查询失败"))
			return
		}

		c.JSON(200, dto.Success(logs))
	}
}