package controllers

import (
	"encoding/json"
	"server/models"
	"server/services"
	"strconv"
	"time"

	"github.com/beego/beego/v2/server/web"
)

// DictController 字典管理控制器
type DictController struct {
	web.Controller
}

// GetDictTypes 获取字典类型列表
func (c *DictController) GetDictTypes() {
	// 获取租户ID
	tenantIdData := c.Ctx.Input.GetData("tenantId")
	tenantId := 0
	if tenantIdData != nil {
		if tid, ok := tenantIdData.(int); ok {
			tenantId = tid
		}
	}

	// 获取用户ID
	userIdData := c.Ctx.Input.GetData("userId")
	userId := 0
	if userIdData != nil {
		if uid, ok := userIdData.(int); ok {
			userId = uid
		}
	}

	parentId, _ := c.GetInt("parent_id", -1)
	statusStr := c.GetString("status")

	var status *int8
	if statusStr != "" {
		s, _ := strconv.ParseInt(statusStr, 10, 8)
		statusVal := int8(s)
		status = &statusVal
	}

	// 分页参数
	page, _ := c.GetInt("page", 1)
	pageSize, _ := c.GetInt("pageSize", 20)

	dictTypes, total, err := services.GetDictTypes(tenantId, userId, parentId, status, page, pageSize)
	if err != nil {
		c.Data["json"] = map[string]interface{}{
			"success": false,
			"message": "查询字典类型失败: " + err.Error(),
		}
		c.ServeJSON()
		return
	}

	c.Data["json"] = map[string]interface{}{
		"success": true,
		"data": map[string]interface{}{
			"list":  dictTypes,
			"total": total,
			"page":  page,
			"pageSize": pageSize,
		},
	}
	c.ServeJSON()
}

// GetDictTypeById 根据ID获取字典类型
func (c *DictController) GetDictTypeById() {
	idStr := c.Ctx.Input.Param(":id")
	id, err := strconv.Atoi(idStr)
	if err != nil || id <= 0 {
		c.Data["json"] = map[string]interface{}{
			"success": false,
			"message": "参数错误",
		}
		c.ServeJSON()
		return
	}

	dictType, err := services.GetDictTypeById(id)
	if err != nil {
		c.Data["json"] = map[string]interface{}{
			"success": false,
			"message": "字典类型不存在",
		}
		c.ServeJSON()
		return
	}

	c.Data["json"] = map[string]interface{}{
		"success": true,
		"data":    dictType,
	}
	c.ServeJSON()
}

// AddDictType 添加字典类型
func (c *DictController) AddDictType() {
	var dictType models.DictType
	if err := json.Unmarshal(c.Ctx.Input.RequestBody, &dictType); err != nil {
		c.Data["json"] = map[string]interface{}{
			"success": false,
			"message": "参数解析失败: " + err.Error(),
		}
		c.ServeJSON()
		return
	}

	// 获取租户ID和用户名
	tenantIdData := c.Ctx.Input.GetData("tenantId")
	tenantId := 0
	if tenantIdData != nil {
		if tid, ok := tenantIdData.(int); ok {
			tenantId = tid
		}
	}
	usernameData := c.Ctx.Input.GetData("username")
	username := ""
	if usernameData != nil {
		if u, ok := usernameData.(string); ok {
			username = u
		}
	}
	userIdData := c.Ctx.Input.GetData("userId")
	userId := 0
	if userIdData != nil {
		if uid, ok := userIdData.(int); ok {
			userId = uid
		}
	}

	// 设置租户ID和创建人
	dictType.TenantId = tenantId
	dictType.CreateBy = username
	if dictType.Status == 0 {
		dictType.Status = 1 // 默认启用
	}

	// 根据用户角色设置是否全局展示
	// system_admin 和 admin 角色默认是全局，其他角色默认是租户私有
	dictType.IsGlobal = 0 // 默认为租户私有
	if userId > 0 {
		// 获取用户的角色信息
		roleCode, err := services.GetUserRoleCode(userId)
		if err == nil && (roleCode == "system_admin" || roleCode == "admin") {
			dictType.IsGlobal = 1 // system_admin 和 admin 角色默认全局
		}
	}

	id, err := services.AddDictType(&dictType)
	if err != nil {
		c.Data["json"] = map[string]interface{}{
			"success": false,
			"message": err.Error(),
		}
		c.ServeJSON()
		return
	}

	c.Data["json"] = map[string]interface{}{
		"success": true,
		"message": "添加成功",
		"data":    map[string]interface{}{"id": id},
	}
	c.ServeJSON()

	// 记录操作日志 - 创建字典类型
	go func() {
		// 异步写日志，避免阻塞请求响应
		rid := int(id)
		newVal, _ := json.Marshal(dictType)
		log := &models.OperationLog{
			TenantId:      dictType.TenantId,
			UserId:        userId,
			Username:      username,
			Module:        "dict",
			ResourceType:  "dict_type",
			ResourceId:    &rid,
			Operation:     "CREATE",
			Description:   "创建字典类型",
			NewValue:      string(newVal),
			IpAddress:     c.Ctx.Input.IP(),
			UserAgent:     c.Ctx.Input.Header("User-Agent"),
			RequestMethod: c.Ctx.Input.Method(),
			RequestUrl:    c.Ctx.Input.URL(),
			Status:        1,
			Duration:      0,
			CreateTime:    time.Now(),
		}
		_ = services.AddOperationLog(log)
	}()
}

// UpdateDictType 更新字典类型
func (c *DictController) UpdateDictType() {
	idStr := c.Ctx.Input.Param(":id")
	id, err := strconv.Atoi(idStr)
	if err != nil || id <= 0 {
		c.Data["json"] = map[string]interface{}{
			"success": false,
			"message": "参数错误",
		}
		c.ServeJSON()
		return
	}

	var dictType models.DictType
	if err := json.Unmarshal(c.Ctx.Input.RequestBody, &dictType); err != nil {
		c.Data["json"] = map[string]interface{}{
			"success": false,
			"message": "参数解析失败: " + err.Error(),
		}
		c.ServeJSON()
		return
	}

	// 获取用户名
	usernameData := c.Ctx.Input.GetData("username")
	username := ""
	if usernameData != nil {
		if u, ok := usernameData.(string); ok {
			username = u
		}
	}

	// 获取用户ID
	userIdData := c.Ctx.Input.GetData("userId")
	userId := 0
	if userIdData != nil {
		if uid, ok := userIdData.(int); ok {
			userId = uid
		}
	}

	dictType.Id = id
	dictType.UpdateBy = username

	err = services.UpdateDictType(&dictType)
	if err != nil {
		c.Data["json"] = map[string]interface{}{
			"success": false,
			"message": err.Error(),
		}
		c.ServeJSON()
		return
	}

	c.Data["json"] = map[string]interface{}{
		"success": true,
		"message": "更新成功",
	}
	c.ServeJSON()

	// 记录操作日志 - 更新字典类型
	go func() {
		newVal, _ := json.Marshal(dictType)
		// 旧值可以从服务层获取，如果需要更详细的旧值，可以在 UpdateDictType 前查询并传入
		log := &models.OperationLog{
			TenantId:      dictType.TenantId,
			UserId:        userId,
			Username:      username,
			Module:        "dict",
			ResourceType:  "dict_type",
			ResourceId:    &dictType.Id,
			Operation:     "UPDATE",
			Description:   "更新字典类型",
			NewValue:      string(newVal),
			IpAddress:     c.Ctx.Input.IP(),
			UserAgent:     c.Ctx.Input.Header("User-Agent"),
			RequestMethod: c.Ctx.Input.Method(),
			RequestUrl:    c.Ctx.Input.URL(),
			Status:        1,
			Duration:      0,
			CreateTime:    time.Now(),
		}
		_ = services.AddOperationLog(log)
	}()
}

// DeleteDictType 删除字典类型
func (c *DictController) DeleteDictType() {
	idStr := c.Ctx.Input.Param(":id")
	id, err := strconv.Atoi(idStr)
	if err != nil || id <= 0 {
		c.Data["json"] = map[string]interface{}{
			"success": false,
			"message": "参数错误",
		}
		c.ServeJSON()
		return
	}

	// 获取租户ID、用户名和用户ID 用于记录日志
	tenantIdData := c.Ctx.Input.GetData("tenantId")
	tenantId := 0
	if tenantIdData != nil {
		if tid, ok := tenantIdData.(int); ok {
			tenantId = tid
		}
	}
	usernameData := c.Ctx.Input.GetData("username")
	username := ""
	if usernameData != nil {
		if u, ok := usernameData.(string); ok {
			username = u
		}
	}
	userIdData := c.Ctx.Input.GetData("userId")
	userId := 0
	if userIdData != nil {
		if uid, ok := userIdData.(int); ok {
			userId = uid
		}
	}

	err = services.DeleteDictType(id, tenantId)
	if err != nil {
		c.Data["json"] = map[string]interface{}{
			"success": false,
			"message": err.Error(),
		}
		c.ServeJSON()
		return
	}

	c.Data["json"] = map[string]interface{}{
		"success": true,
		"message": "删除成功",
	}
	c.ServeJSON()

	// 记录操作日志 - 删除字典类型
	go func() {
		rid := id
		log := &models.OperationLog{
			TenantId:      tenantId,
			UserId:        userId,
			Username:      username,
			Module:        "dict",
			ResourceType:  "dict_type",
			ResourceId:    &rid,
			Operation:     "DELETE",
			Description:   "删除字典类型",
			IpAddress:     c.Ctx.Input.IP(),
			UserAgent:     c.Ctx.Input.Header("User-Agent"),
			RequestMethod: c.Ctx.Input.Method(),
			RequestUrl:    c.Ctx.Input.URL(),
			Status:        1,
			Duration:      0,
			CreateTime:    time.Now(),
		}
		_ = services.AddOperationLog(log)
	}()
}

// GetDictItems 获取字典项列表
func (c *DictController) GetDictItems() {
	dictTypeId, _ := c.GetInt("dict_type_id", 0)
	if dictTypeId <= 0 {
		c.Data["json"] = map[string]interface{}{
			"success": false,
			"message": "参数错误：dict_type_id 必填",
		}
		c.ServeJSON()
		return
	}

	parentIdStr := c.GetString("parent_id")
	statusStr := c.GetString("status")

	var parentId *int
	if parentIdStr != "" {
		pid, _ := strconv.Atoi(parentIdStr)
		parentId = &pid
	}

	var status *int8
	if statusStr != "" {
		s, _ := strconv.ParseInt(statusStr, 10, 8)
		statusVal := int8(s)
		status = &statusVal
	}

	dictItems, err := services.GetDictItems(dictTypeId, parentId, status)
	if err != nil {
		c.Data["json"] = map[string]interface{}{
			"success": false,
			"message": "查询字典项失败: " + err.Error(),
		}
		c.ServeJSON()
		return
	}

	c.Data["json"] = map[string]interface{}{
		"success": true,
		"data":    dictItems,
	}
	c.ServeJSON()
}

// GetDictItemById 根据ID获取字典项
func (c *DictController) GetDictItemById() {
	idStr := c.Ctx.Input.Param(":id")
	id, err := strconv.Atoi(idStr)
	if err != nil || id <= 0 {
		c.Data["json"] = map[string]interface{}{
			"success": false,
			"message": "参数错误",
		}
		c.ServeJSON()
		return
	}

	dictItem, err := services.GetDictItemById(id)
	if err != nil {
		c.Data["json"] = map[string]interface{}{
			"success": false,
			"message": "字典项不存在",
		}
		c.ServeJSON()
		return
	}

	c.Data["json"] = map[string]interface{}{
		"success": true,
		"data":    dictItem,
	}
	c.ServeJSON()
}

// AddDictItem 添加字典项
func (c *DictController) AddDictItem() {
	var dictItem models.DictItem
	if err := json.Unmarshal(c.Ctx.Input.RequestBody, &dictItem); err != nil {
		c.Data["json"] = map[string]interface{}{
			"success": false,
			"message": "参数解析失败: " + err.Error(),
		}
		c.ServeJSON()
		return
	}

	if dictItem.DictTypeId <= 0 {
		c.Data["json"] = map[string]interface{}{
			"success": false,
			"message": "参数错误：dict_type_id 必填",
		}
		c.ServeJSON()
		return
	}

	// 获取用户名
	usernameData := c.Ctx.Input.GetData("username")
	username := ""
	if usernameData != nil {
		if u, ok := usernameData.(string); ok {
			username = u
		}
	}

	// 设置创建人
	dictItem.CreateBy = username
	if dictItem.Status == 0 {
		dictItem.Status = 1 // 默认启用
	}

	id, err := services.AddDictItem(&dictItem)
	if err != nil {
		c.Data["json"] = map[string]interface{}{
			"success": false,
			"message": err.Error(),
		}
		c.ServeJSON()
		return
	}

	c.Data["json"] = map[string]interface{}{
		"success": true,
		"message": "添加成功",
		"data":    map[string]interface{}{"id": id},
	}
	c.ServeJSON()

	// 记录操作日志 - 创建字典项
	go func() {
		// 获取用户ID和租户ID
		userIdData := c.Ctx.Input.GetData("userId")
		userId := 0
		if userIdData != nil {
			if uid, ok := userIdData.(int); ok {
				userId = uid
			}
		}
		tenantIdData := c.Ctx.Input.GetData("tenantId")
		tenantId := 0
		if tenantIdData != nil {
			if tid, ok := tenantIdData.(int); ok {
				tenantId = tid
			}
		}
		rid := int(id)
		newVal, _ := json.Marshal(dictItem)
		log := &models.OperationLog{
			TenantId:      tenantId,
			UserId:        userId,
			Username:      username,
			Module:        "dict",
			ResourceType:  "dict_item",
			ResourceId:    &rid,
			Operation:     "CREATE",
			Description:   "创建字典项",
			NewValue:      string(newVal),
			IpAddress:     c.Ctx.Input.IP(),
			UserAgent:     c.Ctx.Input.Header("User-Agent"),
			RequestMethod: c.Ctx.Input.Method(),
			RequestUrl:    c.Ctx.Input.URL(),
			Status:        1,
			Duration:      0,
			CreateTime:    time.Now(),
		}
		_ = services.AddOperationLog(log)
	}()
}

// UpdateDictItem 更新字典项
func (c *DictController) UpdateDictItem() {
	idStr := c.Ctx.Input.Param(":id")
	id, err := strconv.Atoi(idStr)
	if err != nil || id <= 0 {
		c.Data["json"] = map[string]interface{}{
			"success": false,
			"message": "参数错误",
		}
		c.ServeJSON()
		return
	}

	var dictItem models.DictItem
	if err := json.Unmarshal(c.Ctx.Input.RequestBody, &dictItem); err != nil {
		c.Data["json"] = map[string]interface{}{
			"success": false,
			"message": "参数解析失败: " + err.Error(),
		}
		c.ServeJSON()
		return
	}

	// 获取用户名
	usernameData := c.Ctx.Input.GetData("username")
	username := ""
	if usernameData != nil {
		if u, ok := usernameData.(string); ok {
			username = u
		}
	}

	dictItem.Id = id
	dictItem.UpdateBy = username

	err = services.UpdateDictItem(&dictItem)
	if err != nil {
		c.Data["json"] = map[string]interface{}{
			"success": false,
			"message": err.Error(),
		}
		c.ServeJSON()
		return
	}

	c.Data["json"] = map[string]interface{}{
		"success": true,
		"message": "更新成功",
	}
	c.ServeJSON()

	// 记录操作日志 - 更新字典项
	go func() {
		// 获取用户ID和租户ID
		userIdData := c.Ctx.Input.GetData("userId")
		userId := 0
		if userIdData != nil {
			if uid, ok := userIdData.(int); ok {
				userId = uid
			}
		}
		tenantId := 0
		// 通过字典项id尝试获取所属字典类型并推断租户（可选）
		// 这里先不查询，留 0 或者可从前端传入
		newVal, _ := json.Marshal(dictItem)
		log := &models.OperationLog{
			TenantId:      tenantId,
			UserId:        userId,
			Username:      username,
			Module:        "dict",
			ResourceType:  "dict_item",
			ResourceId:    &dictItem.Id,
			Operation:     "UPDATE",
			Description:   "更新字典项",
			NewValue:      string(newVal),
			IpAddress:     c.Ctx.Input.IP(),
			UserAgent:     c.Ctx.Input.Header("User-Agent"),
			RequestMethod: c.Ctx.Input.Method(),
			RequestUrl:    c.Ctx.Input.URL(),
			Status:        1,
			Duration:      0,
			CreateTime:    time.Now(),
		}
		_ = services.AddOperationLog(log)
	}()
}

// DeleteDictItem 删除字典项
func (c *DictController) DeleteDictItem() {
	idStr := c.Ctx.Input.Param(":id")
	id, err := strconv.Atoi(idStr)
	if err != nil || id <= 0 {
		c.Data["json"] = map[string]interface{}{
			"success": false,
			"message": "参数错误",
		}
		c.ServeJSON()
		return
	}

	err = services.DeleteDictItem(id)
	if err != nil {
		c.Data["json"] = map[string]interface{}{
			"success": false,
			"message": err.Error(),
		}
		c.ServeJSON()
		return
	}

	c.Data["json"] = map[string]interface{}{
		"success": true,
		"message": "删除成功",
	}
	c.ServeJSON()

	// 记录操作日志 - 删除字典项
	go func() {
		// 获取用户ID和租户ID
		userIdData := c.Ctx.Input.GetData("userId")
		userId := 0
		if userIdData != nil {
			if uid, ok := userIdData.(int); ok {
				userId = uid
			}
		}
		tenantIdData := c.Ctx.Input.GetData("tenantId")
		tenantId := 0
		if tenantIdData != nil {
			if tid, ok := tenantIdData.(int); ok {
				tenantId = tid
			}
		}
		usernameData := c.Ctx.Input.GetData("username")
		username := ""
		if usernameData != nil {
			if u, ok := usernameData.(string); ok {
				username = u
			}
		}
		rid := id
		log := &models.OperationLog{
			TenantId:      tenantId,
			UserId:        userId,
			Username:      username,
			Module:        "dict",
			ResourceType:  "dict_item",
			ResourceId:    &rid,
			Operation:     "DELETE",
			Description:   "删除字典项",
			IpAddress:     c.Ctx.Input.IP(),
			UserAgent:     c.Ctx.Input.Header("User-Agent"),
			RequestMethod: c.Ctx.Input.Method(),
			RequestUrl:    c.Ctx.Input.URL(),
			Status:        1,
			Duration:      0,
			CreateTime:    time.Now(),
		}
		_ = services.AddOperationLog(log)
	}()
}

// GetDictItemsByCode 根据字典编码获取字典项（用于业务查询）
func (c *DictController) GetDictItemsByCode() {
	dictCode := c.Ctx.Input.Param(":code")
	if dictCode == "" {
		c.Data["json"] = map[string]interface{}{
			"success": false,
			"message": "参数错误：code 必填",
		}
		c.ServeJSON()
		return
	}

	// 获取租户ID
	tenantIdData := c.Ctx.Input.GetData("tenantId")
	tenantId := 0
	if tenantIdData != nil {
		if tid, ok := tenantIdData.(int); ok {
			tenantId = tid
		}
	}

	includeDisabled := c.GetString("include_disabled") == "1"

	dictItems, err := services.GetDictItemsByCode(dictCode, tenantId, includeDisabled)
	if err != nil {
		c.Data["json"] = map[string]interface{}{
			"success": false,
			"message": "查询字典项失败: " + err.Error(),
		}
		c.ServeJSON()
		return
	}

	c.Data["json"] = map[string]interface{}{
		"success": true,
		"data":    dictItems,
	}
	c.ServeJSON()
}

// BatchUpdateDictItemSort 批量更新字典项排序
func (c *DictController) BatchUpdateDictItemSort() {
	var items []struct {
		Id   int `json:"id"`
		Sort int `json:"sort"`
	}
	if err := json.Unmarshal(c.Ctx.Input.RequestBody, &items); err != nil {
		c.Data["json"] = map[string]interface{}{
			"success": false,
			"message": "参数解析失败: " + err.Error(),
		}
		c.ServeJSON()
		return
	}

	err := services.BatchUpdateDictItemSort(items)
	if err != nil {
		c.Data["json"] = map[string]interface{}{
			"success": false,
			"message": err.Error(),
		}
		c.ServeJSON()
		return
	}

	c.Data["json"] = map[string]interface{}{
		"success": true,
		"message": "更新成功",
	}
	c.ServeJSON()
}