// Copyright 2022 Harness Inc. All rights reserved.
// Use of this source code is governed by the Polyform Free Trial License
// that can be found in the LICENSE.md file for this repository.

package webhook

import (
	"context"
	"fmt"

	"github.com/harness/gitness/internal/api/usererror"
	"github.com/harness/gitness/internal/auth"
	"github.com/harness/gitness/types"
	"github.com/harness/gitness/types/enum"
)

// Find finds a webhook from the provided repository.
func (c *Controller) Find(
	ctx context.Context,
	session *auth.Session,
	repoRef string,
	webhookID int64,
) (*types.Webhook, error) {
	repo, err := c.getRepoCheckAccess(ctx, session, repoRef, enum.PermissionRepoView)
	if err != nil {
		return nil, err
	}

	return c.getWebhookVerifyOwnership(ctx, repo.ID, webhookID)
}

func (c *Controller) getWebhookVerifyOwnership(ctx context.Context, repoID int64,
	webhookID int64) (*types.Webhook, error) {
	if webhookID <= 0 {
		return nil, usererror.BadRequest("A valid webhook ID must be provided.")
	}

	webhook, err := c.webhookStore.Find(ctx, webhookID)
	if err != nil {
		return nil, fmt.Errorf("failed to find webhook with id %d: %w", webhookID, err)
	}

	// ensure the webhook actually belongs to the repo
	if webhook.ParentType != enum.WebhookParentRepo || webhook.ParentID != repoID {
		return nil, fmt.Errorf("webhook doesn't belong to requested repo. Returning error %w", usererror.ErrNotFound)
	}

	return webhook, nil
}