package repository

import (
	"database/sql"
	"fmt"
	"time"

	"devone.aplikasi.web.id/gitea/mario/go-ohif-proxy/internal/api/models"
	"devone.aplikasi.web.id/gitea/mario/go-ohif-proxy/internal/database"
)

// DBUser represents a user from the database
type DBUser struct {
	UserID        int       `db:"UserID"`
	UserEmail     string    `db:"UserEmail"`
	UserPassword  string    `db:"UserPassword"`
	UserRole      string    `db:"UserRole"`
	UserName      string    `db:"UserName"`
	UserCreatedAt time.Time `db:"UserCreatedAt"`
	UserUpdatedAt time.Time `db:"UserUpdatedAt"`
}

// DBRefreshToken represents a refresh token from the database
type DBRefreshToken struct {
	ID        int       `db:"id"`
	Token     string    `db:"token"`
	UserID    string    `db:"user_id"`
	ExpiresAt time.Time `db:"expires_at"`
	IsRevoked bool      `db:"is_revoked"`
	CreatedAt time.Time `db:"created_at"`
}

// UserRepository handles database operations related to users
type UserRepository struct {
	*Repository
}

// NewUserRepository creates a new user repository
func NewUserRepository() *UserRepository {
	return &UserRepository{
		Repository: NewRepository(),
	}
}

// ToUser converts a DBUser to a User model
func (u *DBUser) ToUser() *models.User {
	return &models.User{
		ID:        fmt.Sprintf("%d", u.UserID),
		Email:     u.UserEmail,
		Password:  u.UserPassword,
		Role:      u.UserRole,
		Name:      u.UserName,
		CreatedAt: u.UserCreatedAt.Format(time.RFC3339),
		UpdatedAt: u.UserUpdatedAt.Format(time.RFC3339),
	}
}

// GetUserByEmail retrieves a user by email
func (r *UserRepository) GetUserByEmail(email string) (*models.User, error) {
	var dbUser DBUser

	query := `SELECT * FROM user WHERE UserEmail = ?`
	err := database.DB.Get(&dbUser, query, email)

	if err != nil {
		if err == sql.ErrNoRows {
			return nil, nil
		}
		return nil, fmt.Errorf("database error getting user by email: %w", err)
	}

	return dbUser.ToUser(), nil
}

// GetUserByID retrieves a user by ID
func (r *UserRepository) GetUserByID(id string) (*models.User, error) {
	var dbUser DBUser

	query := `SELECT * FROM user WHERE UserID = ?`
	err := database.DB.Get(&dbUser, query, id)

	if err != nil {
		if err == sql.ErrNoRows {
			return nil, nil
		}
		return nil, fmt.Errorf("database error getting user by ID: %w", err)
	}

	return dbUser.ToUser(), nil
}

// StoreRefreshToken saves a refresh token to the database
func (r *UserRepository) StoreRefreshToken(userID string, token string, expiresAt time.Time) error {
	query := `INSERT INTO refresh_tokens (token, user_id, expires_at, is_revoked, created_at) 
	          VALUES (?, ?, ?, false, NOW())`

	_, err := database.DB.Exec(query, token, userID, expiresAt)

	if err != nil {
		return fmt.Errorf("database error storing refresh token: %w", err)
	}

	return nil
}

// GetRefreshToken retrieves a refresh token from the database
func (r *UserRepository) GetRefreshToken(token string) (*models.RefreshToken, error) {
	var dbToken DBRefreshToken

	query := `SELECT * FROM refresh_tokens WHERE token = ?`
	err := database.DB.Get(&dbToken, query, token)

	if err != nil {
		if err == sql.ErrNoRows {
			return nil, nil
		}
		return nil, fmt.Errorf("database error getting refresh token: %w", err)
	}

	return &models.RefreshToken{
		ID:        fmt.Sprintf("%d", dbToken.ID),
		UserID:    dbToken.UserID,
		Token:     dbToken.Token,
		ExpiresAt: dbToken.ExpiresAt.Format(time.RFC3339),
		IsRevoked: dbToken.IsRevoked,
		CreatedAt: dbToken.CreatedAt.Format(time.RFC3339),
	}, nil
}

// RevokeRefreshToken marks a refresh token as revoked
func (r *UserRepository) RevokeRefreshToken(token string) error {
	query := `UPDATE refresh_tokens SET is_revoked = true WHERE token = ?`
	_, err := database.DB.Exec(query, token)

	if err != nil {
		return fmt.Errorf("database error revoking refresh token: %w", err)
	}

	return nil
}