package dao

import (
	"case-api/api/model"
	"case-api/api/requests"
	"case-api/global"
	"gorm.io/gorm"
	"gorm.io/gorm/clause"
)

type ProjectDao struct {
}

// GetProjectById 获取数据-id
func (r *ProjectDao) GetProjectById(projectId int64) (m *model.Project, err error) {
	err = global.Db.First(&m, projectId).Error
	if err != nil {
		return nil, err
	}
	return m, nil
}

// GetProjectPreloadById 获取数据-加载全部关联-id
func (r *ProjectDao) GetProjectPreloadById(projectId int64) (m *model.Project, err error) {
	err = global.Db.Preload(clause.Associations).First(&m, projectId).Error
	if err != nil {
		return nil, err
	}
	return m, nil
}

// DeleteProject 删除
func (r *ProjectDao) DeleteProject(tx *gorm.DB, maps interface{}) error {
	err := tx.Where(maps).Delete(&model.Project{}).Error
	if err != nil {
		return err
	}
	return nil
}

// DeleteProjectById 删除-id
func (r *ProjectDao) DeleteProjectById(tx *gorm.DB, projectId int64) error {
	if err := tx.Delete(&model.Project{}, projectId).Error; err != nil {
		return err
	}
	return nil
}

// EditProject 修改
func (r *ProjectDao) EditProject(tx *gorm.DB, maps interface{}, data interface{}) error {
	err := tx.Model(&model.Project{}).Where(maps).Updates(data).Error
	if err != nil {
		return err
	}
	return nil
}

// EditProjectById 修改-id
func (r *ProjectDao) EditProjectById(tx *gorm.DB, projectId int64, data interface{}) error {
	err := tx.Model(&model.Project{}).Where("project_id = ?", projectId).Updates(data).Error
	if err != nil {
		return err
	}
	return nil
}

// GetProjectList 获取列表
func (r *ProjectDao) GetProjectList(maps interface{}) (m []*model.Project, err error) {
	err = global.Db.Where(maps).Find(&m).Error
	if err != nil {
		return nil, err
	}
	return m, nil
}

// GetProjectCount 获取数量
func (r *ProjectDao) GetProjectCount(maps interface{}) (total int64, err error) {
	err = global.Db.Model(&model.Project{}).Where(maps).Count(&total).Error
	if err != nil {
		return 0, err
	}
	return total, nil
}

// GetProjectListRand 获取列表-随机
func (r *ProjectDao) GetProjectListRand(maps interface{}, limit int) (m []*model.Project, err error) {
	err = global.Db.Where(maps).Order("rand()").Limit(limit).Find(&m).Error
	if err != nil {
		return nil, err
	}
	return m, nil
}

// AddProject 新增
func (r *ProjectDao) AddProject(tx *gorm.DB, model *model.Project) (*model.Project, error) {
	if err := tx.Create(model).Error; err != nil {
		return nil, err
	}
	return model, nil
}

// GetProject 获取
func (r *ProjectDao) GetProject(maps interface{}) (m *model.Project, err error) {
	err = global.Db.Where(maps).First(&m).Error
	if err != nil {
		return nil, err
	}
	return m, nil
}

// GetProjectPageSearch 获取列表-分页
func (r *ProjectDao) GetProjectPageSearch(req requests.GetProjectPage, page, pageSize int) (m []*model.Project, total int64, err error) {
	var totalRecords int64

	// 构建查询条件
	query := global.Db.Model(&model.Project{})

	// 状态固定为1
	query = query.Where("project_status = ?", 1)

	// 使用 Preload 关联 Case 表
	query = query.Preload("Case", func(db *gorm.DB) *gorm.DB {
		// 添加 case_status 过滤条件，排除掉 case_status 为 2 的记录
		return db.Where("case_status != ?", 2)
	})

	caseSubQuery := global.Db.Model(&model.Case{}).
		Where("case.project_id  = project.project_id").
		Where("case.case_status = ?", 1)

	query = query.Where("EXISTS (?)", caseSubQuery)

	if req.PlatformId != 0 {
		subQuery := global.Db.Model(&model.ProjectPlatform{}).
			Where("project_platform.project_id  = project.project_id").
			Where("project_platform.platform_id = ?", req.PlatformId).
			Where("project_platform.status = ?", 1)

		query = query.Where("EXISTS (?)", subQuery)
	}

	// 排序
	query = query.Order("created_at desc")

	// 查询总数量
	if err := query.Count(&totalRecords).Error; err != nil {
		return nil, 0, err
	}

	err = query.Scopes(model.Paginate(page, pageSize)).Find(&m).Error
	if err != nil {
		return nil, 0, err
	}
	return m, totalRecords, nil
}