package controller

import (
	"context"
	"strconv"

	"cid/model/dto"
	"cid/service"

	"github.com/gogf/gf/v2/errors/gerror"
)

var AdSource = new(adSource)

type adSource struct{}

// Create 创建广告源
func (c *adSource) Create(ctx context.Context, req *dto.CreateAdSourceReq) (res *dto.GetAdSourceRes, err error) {
	id, err := service.AdSource.CreateAdSource(ctx, req)
	if err != nil {
		return nil, err
	}

	adSource, err := service.AdSource.GetAdSourceByID(ctx, id)
	if err != nil {
		return nil, err
	}

	return &dto.GetAdSourceRes{
		AdSource: adSource,
	}, nil
}

// Update 更新广告源
func (c *adSource) Update(ctx context.Context, req *dto.UpdateAdSourceReq) (res *dto.GetAdSourceRes, err error) {
	id, err := strconv.ParseInt(req.Id, 10, 64)
	if err != nil {
		return nil, gerror.New("无效的广告源ID")
	}

	affected, err := service.AdSource.UpdateAdSource(ctx, id, req)
	if err != nil {
		return nil, err
	}
	if affected == 0 {
		return nil, gerror.New("广告源更新失败")
	}

	adSource, err := service.AdSource.GetAdSourceByID(ctx, id)
	if err != nil {
		return nil, err
	}

	return &dto.GetAdSourceRes{
		AdSource: adSource,
	}, nil
}

// Delete 删除广告源
func (c *adSource) Delete(ctx context.Context, req *dto.DeleteAdSourceReq) (res *dto.DeleteAdSourceRes, err error) {
	id, err := strconv.ParseInt(req.Id, 10, 64)
	if err != nil {
		return nil, gerror.New("无效的广告源ID")
	}

	affected, err := service.AdSource.DeleteAdSource(ctx, id)
	if err != nil {
		return nil, err
	}
	if affected == 0 {
		return nil, gerror.New("广告源删除失败")
	}

	return &dto.DeleteAdSourceRes{
		Success: true,
	}, nil
}

// GetByID 根据ID获取广告源
func (c *adSource) GetByID(ctx context.Context, req *dto.GetAdSourceReq) (res *dto.GetAdSourceRes, err error) {
	id, err := strconv.ParseInt(req.Id, 10, 64)
	if err != nil {
		return nil, gerror.New("无效的广告源ID")
	}

	adSource, err := service.AdSource.GetAdSourceByID(ctx, id)
	if err != nil {
		return nil, err
	}
	if adSource == nil {
		return nil, gerror.New("广告源不存在")
	}

	return &dto.GetAdSourceRes{
		AdSource: adSource,
	}, nil
}

// GetList 获取广告源列表
func (c *adSource) GetList(ctx context.Context, req *dto.ListAdSourceReq) (res *dto.ListAdSourceRes, err error) {
	adSources, err := service.AdSource.GetAvailableSources(ctx)
	if err != nil {
		return nil, err
	}

	return &dto.ListAdSourceRes{
		List:  adSources,
		Total: len(adSources),
	}, nil
}