package admin

import (
	"quyun/v2/app/http/dto"
	"quyun/v2/app/requests"
	"quyun/v2/app/services"
	"quyun/v2/database/models"

	"github.com/gofiber/fiber/v3"
	"github.com/samber/lo"
)

// @provider
type users struct{}

type UserItem struct {
	*models.User
	BoughtCount int64 `json:"bought_count"` // 用户已购作品数量（统计 user_posts 记录数，含赠送/免费购买）
}

// List users
//
//	@Summary	用户列表
//	@Tags		Admin Users
//	@Produce	json
//	@Param		query		query		UserListQuery						false	"筛选条件"
//	@Success	200			{object}	requests.Pager{items=UserItem}	"成功"
//	@Router		/admin/v1/users [get]
//	@Bind		query query
func (ctl *users) List(ctx fiber.Ctx, query *dto.UserListQuery) (*requests.Pager, error) {
	pager, err := services.Users.List(ctx, query)
	if err != nil {
		return nil, err
	}

	userIDs := lo.Map(pager.Items.([]*models.User), func(item *models.User, _ int) int64 {
		return item.ID
	})
	if len(userIDs) == 0 {
		return pager, nil
	}

	cntMap, err := services.Users.BoughtStatistics(ctx, userIDs)
	if err != nil {
		return pager, err
	}

	items := lo.Map(pager.Items.([]*models.User), func(item *models.User, _ int) UserItem {
		cnt := int64(0)
		if v, ok := cntMap[item.ID]; ok {
			cnt = v
		}
		return UserItem{User: item, BoughtCount: cnt}
	})
	pager.Items = items
	return pager, nil
}

// Show user
//
//	@Summary	用户详情
//	@Tags		Admin Users
//	@Produce	json
//	@Param		id	path		int64		true	"用户 ID"
//	@Success	200	{object}	models.User	"成功"
//	@Router		/admin/v1/users/:id [get]
//	@Bind		user path key(id) model(id)
func (ctl *users) Show(ctx fiber.Ctx, user *models.User) (*models.User, error) {
	return user, nil
}

// Articles show user bought articles
//
//	@Summary	用户已购作品
//	@Tags		Admin Users
//	@Produce	json
//	@Param		id			path		int64								true	"用户 ID"
//	@Param		pagination	query		requests.Pagination					false	"分页参数"
//	@Success	200			{object}	requests.Pager{items=models.Post}	"成功"
//	@Router		/admin/v1/users/:id/articles [get]
//	@Bind		user path key(id) model(id)
//	@Bind		pagination query
func (ctl *users) Articles(ctx fiber.Ctx, user *models.User, pagination *requests.Pagination) (*requests.Pager, error) {
	return services.Posts.Bought(ctx, user.ID, pagination)
}

type UserBalance struct {
	Balance int64 `json:"balance"`
}

type UserPhoneForm struct {
	Phone string `json:"phone"` // 用户手机号（11 位数字）
}

type UserCreateForm struct {
	Phone    string `json:"phone"`    // 用户手机号（必填，11 位数字）
	Username string `json:"username"` // 用户昵称（可选）
}

// Balance
//
//	@Summary	调整用户余额
//	@Tags		Admin Users
//	@Accept		json
//	@Produce	json
//	@Param		id		path		int64		true	"用户 ID"
//	@Param		balance	body		UserBalance	true	"请求体"
//	@Success	200		{object}	any			"成功"
//	@Router		/admin/v1/users/:id/balance [post]
//	@Bind		user path key(id) model(id)
//	@Bind		balance body
func (ctl *users) Balance(ctx fiber.Ctx, user *models.User, balance *UserBalance) error {
	return services.Users.AddBalance(ctx, user.ID, balance.Balance)
}

// SetPhone
//
//	@Summary	设置用户手机号
//	@Tags		Admin Users
//	@Accept		json
//	@Produce	json
//	@Param		id		path		int64			true	"用户 ID"
//	@Param		form	body		UserPhoneForm	true	"请求体"
//	@Success	200		{object}	any				"成功"
//	@Router		/admin/v1/users/:id/phone [post]
//	@Bind		user path key(id) model(id)
//	@Bind		form body
func (ctl *users) SetPhone(ctx fiber.Ctx, user *models.User, form *UserPhoneForm) error {
	return services.Users.SetPhone(ctx, user.ID, form.Phone)
}

// Create user
//
//	@Summary	创建用户
//	@Tags		Admin Users
//	@Accept		json
//	@Produce	json
//	@Param		form	body		UserCreateForm	true	"请求体"
//	@Success	200		{object}	models.User		"成功"
//	@Router		/admin/v1/users [post]
//	@Bind		form body
func (ctl *users) Create(ctx fiber.Ctx, form *UserCreateForm) (*models.User, error) {
	return services.Users.CreateByPhone(ctx, form.Phone, form.Username)
}