package accounts

import (
	"context"
	"errors"
	"fmt"
	"ruben/inventory2/internal/consts"

	"github.com/jackc/pgx/v5"
	"github.com/jackc/pgx/v5/pgxpool"
)

type (
	Store struct {
		db *pgxpool.Pool
	}

	StoreWithContext struct {
		ctx context.Context
		db  *Store
	}

	Account struct {
		ID    int64
		Email string
	}
)

func NewStore(db *pgxpool.Pool) *Store {
	return &Store{
		db: db,
	}
}

func (db *Store) WithContext(ctx context.Context) *StoreWithContext {
	return &StoreWithContext{
		ctx: ctx,
		db:  db,
	}
}

func (db *Store) CreateAccount(ctx context.Context, email string) (Account, error) {
	rows, err := db.db.Query(
		ctx,
		"INSERT INTO accounts (email) VALUES (@email) RETURNING account_id",
		pgx.NamedArgs{
			"email": email,
		},
	)
	if err != nil {
		return Account{}, fmt.Errorf("failed to perform query: %w", err)
	}

	acctID, err := pgx.CollectExactlyOneRow(rows, pgx.RowTo[int64])
	if err != nil {
		return Account{}, fmt.Errorf("failed to scan row: %w", err)
	}

	return Account{
		ID:    acctID,
		Email: email,
	}, nil
}

func (db *Store) GetAccount(ctx context.Context, id int64) (Account, error) {
	rows, err := db.db.Query(
		ctx,
		"SELECT email FROM accounts WHERE account_id = @account_id",
		pgx.NamedArgs{
			"account_id": id,
		},
	)
	if err != nil {
		return Account{}, fmt.Errorf("failed to perform query: %w", err)
	}

	email, err := pgx.CollectExactlyOneRow(rows, pgx.RowTo[string])
	if err != nil {
		if errors.Is(err, pgx.ErrNoRows) {
			return Account{}, consts.ErrNotFound
		}

		return Account{}, fmt.Errorf("failed to scan row: %w", err)
	}

	return Account{
		ID:    id,
		Email: email,
	}, nil
}

func (db *Store) GetAccountByEmail(ctx context.Context, email string) (Account, error) {
	rows, err := db.db.Query(
		ctx,
		"SELECT account_id FROM accounts WHERE email = @email",
		pgx.NamedArgs{
			"email": email,
		},
	)
	if err != nil {
		return Account{}, fmt.Errorf("failed to perform query: %w", err)
	}

	id, err := pgx.CollectExactlyOneRow(rows, pgx.RowTo[int64])
	if err != nil {
		if errors.Is(err, pgx.ErrNoRows) {
			return Account{}, consts.ErrNotFound
		}

		return Account{}, fmt.Errorf("failed to scan row: %w", err)
	}

	return Account{
		ID:    id,
		Email: email,
	}, nil
}

func (db *StoreWithContext) CreateAccount(email string) (Account, error) {
	return db.db.CreateAccount(db.ctx, email)
}

func (db *StoreWithContext) GetAccount(id int64) (Account, error) {
	return db.db.GetAccount(db.ctx, id)
}