package database

import (
	"database/sql"
	"fmt"
	"log"

	"git.vakhrushev.me/av/transcriber/models"
	"github.com/doug-martin/goqu/v9"
	_ "github.com/doug-martin/goqu/v9/dialect/sqlite3"
	_ "github.com/mattn/go-sqlite3"
	"github.com/pressly/goose/v3"
)

type DB struct {
	conn *sql.DB
	gq   *goqu.Database
}

func New(dbPath string) (*DB, error) {
	conn, err := sql.Open("sqlite3", dbPath)
	if err != nil {
		return nil, fmt.Errorf("failed to open database: %w", err)
	}

	if err := conn.Ping(); err != nil {
		return nil, fmt.Errorf("failed to ping database: %w", err)
	}

	gq := goqu.New("sqlite3", conn)

	db := &DB{
		conn: conn,
		gq:   gq,
	}

	return db, nil
}

func (db *DB) RunMigrations(migrationsDir string) error {
	if err := goose.SetDialect("sqlite3"); err != nil {
		return fmt.Errorf("failed to set goose dialect: %w", err)
	}

	if err := goose.Up(db.conn, migrationsDir); err != nil {
		return fmt.Errorf("failed to run migrations: %w", err)
	}

	log.Println("Migrations completed successfully")
	return nil
}

func (db *DB) Close() error {
	return db.conn.Close()
}

func (db *DB) CreateFile(file *models.File) error {
	query := db.gq.Insert("files").Rows(file)
	sql, args, err := query.ToSQL()
	if err != nil {
		return fmt.Errorf("failed to build query: %w", err)
	}

	_, err = db.conn.Exec(sql, args...)
	if err != nil {
		return fmt.Errorf("failed to insert file: %w", err)
	}

	return nil
}

func (db *DB) CreateTranscribeJob(job *models.TranscribeJob) error {
	query := db.gq.Insert("transcribe_jobs").Rows(job)
	sql, args, err := query.ToSQL()
	if err != nil {
		return fmt.Errorf("failed to build query: %w", err)
	}

	_, err = db.conn.Exec(sql, args...)
	if err != nil {
		return fmt.Errorf("failed to insert transcribe job: %w", err)
	}

	return nil
}

func (db *DB) GetFileByID(id string) (*models.File, error) {
	query := db.gq.From("files").Where(goqu.C("id").Eq(id))
	sql, args, err := query.ToSQL()
	if err != nil {
		return nil, fmt.Errorf("failed to build query: %w", err)
	}

	var file models.File
	err = db.conn.QueryRow(sql, args...).Scan(&file.ID, &file.Type, &file.Size, &file.CreatedAt)
	if err != nil {
		return nil, fmt.Errorf("failed to get file: %w", err)
	}

	return &file, nil
}

func (db *DB) GetTranscribeJobByID(id string) (*models.TranscribeJob, error) {
	query := db.gq.From("transcribe_jobs").Where(goqu.C("id").Eq(id))
	sql, args, err := query.ToSQL()
	if err != nil {
		return nil, fmt.Errorf("failed to build query: %w", err)
	}

	var job models.TranscribeJob
	err = db.conn.QueryRow(sql, args...).Scan(&job.ID, &job.Status, &job.FileID, &job.CreatedAt, &job.UpdatedAt)
	if err != nil {
		return nil, fmt.Errorf("failed to get transcribe job: %w", err)
	}

	return &job, nil
}