package app

import (
	"context"
	"database/sql"
	"errors"
)

func (a *App) getUserWebhookToken(ctx context.Context, userID string) (UserWebhookToken, error) {
	var t UserWebhookToken
	err := a.db.QueryRowContext(ctx, `SELECT user_id, token, created_at FROM user_webhook_tokens WHERE user_id=$1`, userID).
		Scan(&t.UserID, &t.Token, &t.CreatedAt)
	if err != nil {
		if errors.Is(err, sql.ErrNoRows) {
			return UserWebhookToken{}, errors.New("token not found")
		}
		return UserWebhookToken{}, err
	}
	return t, nil
}

func (a *App) ensureUserWebhookToken(ctx context.Context, userID string) (UserWebhookToken, error) {
	t, err := a.getUserWebhookToken(ctx, userID)
	if err == nil {
		return t, nil
	}
	token, err := newDeployToken()
	if err != nil {
		return UserWebhookToken{}, err
	}
	var out UserWebhookToken
	err = a.db.QueryRowContext(ctx, `INSERT INTO user_webhook_tokens (user_id, token) VALUES ($1,$2)
		ON CONFLICT (user_id) DO UPDATE SET token=user_webhook_tokens.token
		RETURNING user_id, token, created_at`, userID, token).
		Scan(&out.UserID, &out.Token, &out.CreatedAt)
	if err != nil {
		return UserWebhookToken{}, err
	}
	return out, nil
}

func (a *App) rotateUserWebhookToken(ctx context.Context, userID string) (UserWebhookToken, error) {
	token, err := newDeployToken()
	if err != nil {
		return UserWebhookToken{}, err
	}
	var out UserWebhookToken
	err = a.db.QueryRowContext(ctx, `INSERT INTO user_webhook_tokens (user_id, token, created_at) VALUES ($1,$2,NOW())
		ON CONFLICT (user_id) DO UPDATE SET token=EXCLUDED.token, created_at=NOW()
		RETURNING user_id, token, created_at`, userID, token).
		Scan(&out.UserID, &out.Token, &out.CreatedAt)
	if err != nil {
		return UserWebhookToken{}, err
	}
	return out, nil
}

func (a *App) validateUserWebhookToken(ctx context.Context, userID, token string) (bool, error) {
	if userID == "" || token == "" {
		return false, nil
	}
	var exists bool
	err := a.db.QueryRowContext(ctx, `SELECT EXISTS(SELECT 1 FROM user_webhook_tokens WHERE user_id=$1 AND token=$2)`, userID, token).Scan(&exists)
	return exists, err
}