package handler

import (
	"carrotskin/internal/model"
	"carrotskin/internal/service"
	"carrotskin/internal/types"
	"carrotskin/pkg/database"
	"carrotskin/pkg/logger"
	"net/http"

	"github.com/gin-gonic/gin"
	"go.uber.org/zap"
)

// CreateProfile 创建档案
// @Summary 创建Minecraft档案
// @Description 创建新的Minecraft角色档案，UUID由后端自动生成
// @Tags profile
// @Accept json
// @Produce json
// @Security BearerAuth
// @Param request body types.CreateProfileRequest true "档案信息（仅需提供角色名）"
// @Success 200 {object} model.Response{data=types.ProfileInfo} "创建成功，返回完整档案信息（含自动生成的UUID）"
// @Failure 400 {object} model.ErrorResponse "请求参数错误或已达档案数量上限"
// @Failure 401 {object} model.ErrorResponse "未授权"
// @Failure 500 {object} model.ErrorResponse "服务器错误"
// @Router /api/v1/profile [post]
func CreateProfile(c *gin.Context) {
	loggerInstance := logger.MustGetLogger()
	// 获取用户ID
	userID, exists := c.Get("user_id")
	if !exists {
		c.JSON(http.StatusUnauthorized, model.NewErrorResponse(
			model.CodeUnauthorized,
			"未授权",
			nil,
		))
		return
	}

	// 解析请求
	var req types.CreateProfileRequest
	if err := c.ShouldBindJSON(&req); err != nil {
		c.JSON(http.StatusBadRequest, model.NewErrorResponse(
			model.CodeBadRequest,
			"请求参数错误: "+err.Error(),
			nil,
		))
		return
	}

	// TODO: 从配置或数据库读取限制
	maxProfiles := 5
	db := database.MustGetDB()
	// 检查档案数量限制
	if err := service.CheckProfileLimit(db, userID.(int64), maxProfiles); err != nil {
		c.JSON(http.StatusBadRequest, model.NewErrorResponse(
			model.CodeBadRequest,
			err.Error(),
			nil,
		))
		return
	}

	// 创建档案
	profile, err := service.CreateProfile(db, userID.(int64), req.Name)
	if err != nil {
		loggerInstance.Error("创建档案失败",
			zap.Int64("user_id", userID.(int64)),
			zap.String("name", req.Name),
			zap.Error(err),
		)
		c.JSON(http.StatusInternalServerError, model.NewErrorResponse(
			model.CodeServerError,
			err.Error(),
			nil,
		))
		return
	}

	// 返回成功响应
	c.JSON(http.StatusOK, model.NewSuccessResponse(&types.ProfileInfo{
		UUID:       profile.UUID,
		UserID:     profile.UserID,
		Name:       profile.Name,
		SkinID:     profile.SkinID,
		CapeID:     profile.CapeID,
		IsActive:   profile.IsActive,
		LastUsedAt: profile.LastUsedAt,
		CreatedAt:  profile.CreatedAt,
		UpdatedAt:  profile.UpdatedAt,
	}))
}

// GetProfiles 获取档案列表
// @Summary 获取档案列表
// @Description 获取当前用户的所有档案
// @Tags profile
// @Accept json
// @Produce json
// @Security BearerAuth
// @Success 200 {object} model.Response "获取成功"
// @Failure 401 {object} model.ErrorResponse "未授权"
// @Failure 500 {object} model.ErrorResponse "服务器错误"
// @Router /api/v1/profile [get]
func GetProfiles(c *gin.Context) {
	loggerInstance := logger.MustGetLogger()
	// 获取用户ID
	userID, exists := c.Get("user_id")
	if !exists {
		c.JSON(http.StatusUnauthorized, model.NewErrorResponse(
			model.CodeUnauthorized,
			"未授权",
			nil,
		))
		return
	}

	// 查询档案列表
	profiles, err := service.GetUserProfiles(database.MustGetDB(), userID.(int64))
	if err != nil {
		loggerInstance.Error("获取档案列表失败",
			zap.Int64("user_id", userID.(int64)),
			zap.Error(err),
		)
		c.JSON(http.StatusInternalServerError, model.NewErrorResponse(
			model.CodeServerError,
			err.Error(),
			nil,
		))
		return
	}

	// 转换为响应格式
	result := make([]*types.ProfileInfo, 0, len(profiles))
	for _, profile := range profiles {
		result = append(result, &types.ProfileInfo{
			UUID:       profile.UUID,
			UserID:     profile.UserID,
			Name:       profile.Name,
			SkinID:     profile.SkinID,
			CapeID:     profile.CapeID,
			IsActive:   profile.IsActive,
			LastUsedAt: profile.LastUsedAt,
			CreatedAt:  profile.CreatedAt,
			UpdatedAt:  profile.UpdatedAt,
		})
	}

	c.JSON(http.StatusOK, model.NewSuccessResponse(result))
}

// GetProfile 获取档案详情
// @Summary 获取档案详情
// @Description 根据UUID获取档案详细信息
// @Tags profile
// @Accept json
// @Produce json
// @Param uuid path string true "档案UUID"
// @Success 200 {object} model.Response "获取成功"
// @Failure 404 {object} model.ErrorResponse "档案不存在"
// @Failure 500 {object} model.ErrorResponse "服务器错误"
// @Router /api/v1/profile/{uuid} [get]
func GetProfile(c *gin.Context) {
	loggerInstance := logger.MustGetLogger()
	uuid := c.Param("uuid")

	// 查询档案
	profile, err := service.GetProfileByUUID(database.MustGetDB(), uuid)
	if err != nil {
		loggerInstance.Error("获取档案失败",
			zap.String("uuid", uuid),
			zap.Error(err),
		)
		c.JSON(http.StatusNotFound, model.NewErrorResponse(
			model.CodeNotFound,
			err.Error(),
			nil,
		))
		return
	}

	// 返回成功响应
	c.JSON(http.StatusOK, model.NewSuccessResponse(&types.ProfileInfo{
		UUID:       profile.UUID,
		UserID:     profile.UserID,
		Name:       profile.Name,
		SkinID:     profile.SkinID,
		CapeID:     profile.CapeID,
		IsActive:   profile.IsActive,
		LastUsedAt: profile.LastUsedAt,
		CreatedAt:  profile.CreatedAt,
		UpdatedAt:  profile.UpdatedAt,
	}))
}

// UpdateProfile 更新档案
// @Summary 更新档案
// @Description 更新档案信息
// @Tags profile
// @Accept json
// @Produce json
// @Security BearerAuth
// @Param uuid path string true "档案UUID"
// @Param request body types.UpdateProfileRequest true "更新信息"
// @Success 200 {object} model.Response "更新成功"
// @Failure 400 {object} model.ErrorResponse "请求参数错误"
// @Failure 401 {object} model.ErrorResponse "未授权"
// @Failure 403 {object} model.ErrorResponse "无权操作"
// @Failure 404 {object} model.ErrorResponse "档案不存在"
// @Failure 500 {object} model.ErrorResponse "服务器错误"
// @Router /api/v1/profile/{uuid} [put]
func UpdateProfile(c *gin.Context) {
	loggerInstance := logger.MustGetLogger()
	uuid := c.Param("uuid")

	// 获取用户ID
	userID, exists := c.Get("user_id")
	if !exists {
		c.JSON(http.StatusUnauthorized, model.NewErrorResponse(
			model.CodeUnauthorized,
			"未授权",
			nil,
		))
		return
	}

	// 解析请求
	var req types.UpdateProfileRequest
	if err := c.ShouldBindJSON(&req); err != nil {
		c.JSON(http.StatusBadRequest, model.NewErrorResponse(
			model.CodeBadRequest,
			"请求参数错误: "+err.Error(),
			nil,
		))
		return
	}

	// 更新档案
	var namePtr *string
	if req.Name != "" {
		namePtr = &req.Name
	}

	profile, err := service.UpdateProfile(database.MustGetDB(), uuid, userID.(int64), namePtr, req.SkinID, req.CapeID)
	if err != nil {
		loggerInstance.Error("更新档案失败",
			zap.String("uuid", uuid),
			zap.Int64("user_id", userID.(int64)),
			zap.Error(err),
		)

		statusCode := http.StatusInternalServerError
		if err.Error() == "档案不存在" {
			statusCode = http.StatusNotFound
		} else if err.Error() == "无权操作此档案" {
			statusCode = http.StatusForbidden
		}

		c.JSON(statusCode, model.NewErrorResponse(
			model.CodeServerError,
			err.Error(),
			nil,
		))
		return
	}

	// 返回成功响应
	c.JSON(http.StatusOK, model.NewSuccessResponse(&types.ProfileInfo{
		UUID:       profile.UUID,
		UserID:     profile.UserID,
		Name:       profile.Name,
		SkinID:     profile.SkinID,
		CapeID:     profile.CapeID,
		IsActive:   profile.IsActive,
		LastUsedAt: profile.LastUsedAt,
		CreatedAt:  profile.CreatedAt,
		UpdatedAt:  profile.UpdatedAt,
	}))
}

// DeleteProfile 删除档案
// @Summary 删除档案
// @Description 删除指定的Minecraft档案
// @Tags profile
// @Accept json
// @Produce json
// @Security BearerAuth
// @Param uuid path string true "档案UUID"
// @Success 200 {object} model.Response "删除成功"
// @Failure 401 {object} model.ErrorResponse "未授权"
// @Failure 403 {object} model.ErrorResponse "无权操作"
// @Failure 404 {object} model.ErrorResponse "档案不存在"
// @Failure 500 {object} model.ErrorResponse "服务器错误"
// @Router /api/v1/profile/{uuid} [delete]
func DeleteProfile(c *gin.Context) {
	loggerInstance := logger.MustGetLogger()
	uuid := c.Param("uuid")

	// 获取用户ID
	userID, exists := c.Get("user_id")
	if !exists {
		c.JSON(http.StatusUnauthorized, model.NewErrorResponse(
			model.CodeUnauthorized,
			"未授权",
			nil,
		))
		return
	}

	// 删除档案
	err := service.DeleteProfile(database.MustGetDB(), uuid, userID.(int64))
	if err != nil {
		loggerInstance.Error("删除档案失败",
			zap.String("uuid", uuid),
			zap.Int64("user_id", userID.(int64)),
			zap.Error(err),
		)

		statusCode := http.StatusInternalServerError
		if err.Error() == "档案不存在" {
			statusCode = http.StatusNotFound
		} else if err.Error() == "无权操作此档案" {
			statusCode = http.StatusForbidden
		}

		c.JSON(statusCode, model.NewErrorResponse(
			model.CodeServerError,
			err.Error(),
			nil,
		))
		return
	}

	// 返回成功响应
	c.JSON(http.StatusOK, model.NewSuccessResponse(gin.H{
		"message": "删除成功",
	}))
}

// SetActiveProfile 设置活跃档案
// @Summary 设置活跃档案
// @Description 将指定档案设置为活跃状态
// @Tags profile
// @Accept json
// @Produce json
// @Security BearerAuth
// @Param uuid path string true "档案UUID"
// @Success 200 {object} model.Response "设置成功"
// @Failure 401 {object} model.ErrorResponse "未授权"
// @Failure 403 {object} model.ErrorResponse "无权操作"
// @Failure 404 {object} model.ErrorResponse "档案不存在"
// @Failure 500 {object} model.ErrorResponse "服务器错误"
// @Router /api/v1/profile/{uuid}/activate [post]
func SetActiveProfile(c *gin.Context) {
	loggerInstance := logger.MustGetLogger()
	uuid := c.Param("uuid")

	// 获取用户ID
	userID, exists := c.Get("user_id")
	if !exists {
		c.JSON(http.StatusUnauthorized, model.NewErrorResponse(
			model.CodeUnauthorized,
			"未授权",
			nil,
		))
		return
	}

	// 设置活跃状态
	err := service.SetActiveProfile(database.MustGetDB(), uuid, userID.(int64))
	if err != nil {
		loggerInstance.Error("设置活跃档案失败",
			zap.String("uuid", uuid),
			zap.Int64("user_id", userID.(int64)),
			zap.Error(err),
		)

		statusCode := http.StatusInternalServerError
		if err.Error() == "档案不存在" {
			statusCode = http.StatusNotFound
		} else if err.Error() == "无权操作此档案" {
			statusCode = http.StatusForbidden
		}

		c.JSON(statusCode, model.NewErrorResponse(
			model.CodeServerError,
			err.Error(),
			nil,
		))
		return
	}

	// 返回成功响应
	c.JSON(http.StatusOK, model.NewSuccessResponse(gin.H{
		"message": "设置成功",
	}))
}