package etsy

import (
	"context"
	"fmt"
	"net/http"

	"ruben/inventory2/domains/platforms/etsy/generated_client"
)

func newFixedAccessTokenClient(apiKey, accessToken string) (*generated_client.ClientWithResponses, error) {
	return newAuthenticatingClient(apiKey, func(ctx context.Context) (string, error) {
		return accessToken, nil
	})
}

func newAccessTokenRefreshingClient(apiKey string) (*generated_client.ClientWithResponses, error) {
	return newAuthenticatingClient(apiKey, func(ctx context.Context) (string, error) {
		// TODO: look up the token in the db.
		return "", nil
	})
}

func newAuthenticatingClient(apiKey string, getAccessToken func(context.Context) (string, error)) (*generated_client.ClientWithResponses, error) {
	var setAuthHeaders generated_client.ClientOption = func(c *generated_client.Client) error {
		c.RequestEditors = append(c.RequestEditors, generated_client.RequestEditorFn(func(ctx context.Context, req *http.Request) error {
			accessToken, err := getAccessToken(req.Context())
			if err != nil {
				return err
			}

			h := req.Header
			h.Set("x-api-key", apiKey)
			h.Set("Authorization", fmt.Sprintf("Bearer %s", accessToken))

			return nil
		}))
		return nil
	}

	c, err := generated_client.NewClientWithResponses("https://api.etsy.com", setAuthHeaders)
	if err != nil {
		return nil, fmt.Errorf("failed to initialize open api client: %w", err)
	}

	return c, nil
}