package repository

import (
	"fmt"
	"gorm.io/gorm"
	"ssq-desk/internal/database"
	"ssq-desk/internal/storage/models"
	"time"
)

// SQLiteSsqRepository SQLite 实现
type SQLiteSsqRepository struct {
	db *gorm.DB
}

// NewSQLiteSsqRepository 创建 SQLite 仓库
func NewSQLiteSsqRepository() (SsqRepository, error) {
	db := database.GetSQLite()
	if db == nil {
		return nil, fmt.Errorf("SQLite 数据库未初始化或初始化失败")
	}

	// 自动迁移表结构（数据库初始化时已迁移，这里再次确保）
	err := db.AutoMigrate(&models.SsqHistory{})
	if err != nil {
		return nil, fmt.Errorf("SQLite 表迁移失败: %v", err)
	}

	return &SQLiteSsqRepository{db: db}, nil
}

// FindAll 查询所有历史数据
func (r *SQLiteSsqRepository) FindAll() ([]models.SsqHistory, error) {
	var histories []models.SsqHistory
	err := r.db.Order("issue_number DESC").Find(&histories).Error
	return histories, err
}

// FindByIssue 根据期号查询
func (r *SQLiteSsqRepository) FindByIssue(issueNumber string) (*models.SsqHistory, error) {
	var history models.SsqHistory
	err := r.db.Where("issue_number = ?", issueNumber).First(&history).Error
	if err == gorm.ErrRecordNotFound {
		return nil, nil
	}
	return &history, err
}

// FindByRedBalls 根据红球查询（支持部分匹配）
func (r *SQLiteSsqRepository) FindByRedBalls(redBalls []int) ([]models.SsqHistory, error) {
	if len(redBalls) == 0 {
		return r.FindAll()
	}

	var histories []models.SsqHistory
	query := r.db

	// 构建查询条件：红球在输入的红球列表中
	for _, ball := range redBalls {
		query = query.Where("red_ball_1 = ? OR red_ball_2 = ? OR red_ball_3 = ? OR red_ball_4 = ? OR red_ball_5 = ? OR red_ball_6 = ?",
			ball, ball, ball, ball, ball, ball)
	}

	err := query.Order("issue_number DESC").Find(&histories).Error
	return histories, err
}

// FindByRedAndBlue 根据红球和蓝球查询
func (r *SQLiteSsqRepository) FindByRedAndBlue(redBalls []int, blueBall int, blueBallRange []int) ([]models.SsqHistory, error) {
	var histories []models.SsqHistory
	query := r.db

	// 红球条件
	if len(redBalls) > 0 {
		for _, ball := range redBalls {
			query = query.Where("red_ball_1 = ? OR red_ball_2 = ? OR red_ball_3 = ? OR red_ball_4 = ? OR red_ball_5 = ? OR red_ball_6 = ?",
				ball, ball, ball, ball, ball, ball)
		}
	}

	// 蓝球条件
	if blueBall > 0 {
		query = query.Where("blue_ball = ?", blueBall)
	} else if len(blueBallRange) > 0 {
		query = query.Where("blue_ball IN ?", blueBallRange)
	}

	err := query.Order("issue_number DESC").Find(&histories).Error
	return histories, err
}

// Create 创建记录
func (r *SQLiteSsqRepository) Create(history *models.SsqHistory) error {
	now := time.Now()
	if history.CreatedAt.IsZero() {
		history.CreatedAt = now
	}
	if history.UpdatedAt.IsZero() {
		history.UpdatedAt = now
	}
	return r.db.Create(history).Error
}

// BatchCreate 批量创建
func (r *SQLiteSsqRepository) BatchCreate(histories []models.SsqHistory) error {
	if len(histories) == 0 {
		return nil
	}
	now := time.Now()
	for i := range histories {
		if histories[i].CreatedAt.IsZero() {
			histories[i].CreatedAt = now
		}
		if histories[i].UpdatedAt.IsZero() {
			histories[i].UpdatedAt = now
		}
	}
	return r.db.CreateInBatches(histories, 100).Error
}

// GetLatestIssue 获取最新期号
func (r *SQLiteSsqRepository) GetLatestIssue() (string, error) {
	var history models.SsqHistory
	err := r.db.Order("issue_number DESC").First(&history).Error
	if err == gorm.ErrRecordNotFound {
		return "", nil
	}
	return history.IssueNumber, err
}

// Count 统计总数
func (r *SQLiteSsqRepository) Count() (int64, error) {
	var count int64
	err := r.db.Model(&models.SsqHistory{}).Count(&count).Error
	return count, err
}