package mysqldriver

import (
	"context"
	"database/sql"
	"errors"
	"git.aiterp.net/stufflog/server/internal/xlerrors"
	"git.aiterp.net/stufflog/server/models"
	sq "github.com/Masterminds/squirrel"
	"github.com/jmoiron/sqlx"
)

type userRepository struct {
	db *sqlx.DB
}

func (r *userRepository) Find(ctx context.Context, id string) (*models.User, error) {
	user := models.User{}
	err := r.db.GetContext(ctx, &user, "SELECT * FROM user WHERE user_id=?", id)
	if err != nil {
		if err == sql.ErrNoRows {
			return nil, xlerrors.NotFound("User")
		}

		return nil, err
	}

	return &user, nil
}

func (r *userRepository) List(ctx context.Context, filter models.UserFilter) ([]*models.User, error) {
	q := sq.Select("user.*").From("user").OrderBy("user_id")
	if len(filter.UserIDs) > 0 {
		q = q.Where(sq.Eq{"user_id": filter.UserIDs})
	}
	if filter.Active != nil {
		q = q.Where(sq.Eq{"active": *filter.Active})
	}
	if filter.Admin != nil {
		q = q.Where(sq.Eq{"admin": *filter.Admin})
	}
	if filter.Limit != nil && *filter.Limit > 0 {
		q = q.Limit(uint64(*filter.Limit))
	}

	query, args, err := q.ToSql()
	if err != nil {
		return nil, err
	}

	results := make([]*models.User, 0, 16)
	err = r.db.SelectContext(ctx, &results, query, args...)
	if err != nil {
		if err == sql.ErrNoRows {
			return []*models.User{}, nil
		}

		return nil, err
	}

	return results, nil
}

func (r *userRepository) Insert(ctx context.Context, user models.User) (*models.User, error) {
	if len(user.Name) < 1 || len([]byte(user.Name)) > 32 {
		return nil, errors.New("user id is not valid")
	}

	_, err := r.db.NamedExecContext(ctx, `
		INSERT INTO user (
			user_id, name, active, admin, hash
		) VALUES (
			:user_id, :name, :active, :admin, :hash
		)
	`, user)
	if err != nil {
		return nil, err
	}

	return &user, nil
}

func (r *userRepository) Save(ctx context.Context, user models.User) error {
	_, err := r.db.NamedExecContext(ctx, `
		UPDATE user
		SET name=:name,
		    hash=:hash,
		    admin=:admin,
		    active=:active
		WHERE user_id=:user_id
	`, user)

	return err
}

func (r *userRepository) Delete(ctx context.Context, user models.User) error {
	_, err := r.db.ExecContext(ctx, "DELETE FROM user WHERE user_id=?", user.ID)
	return err
}