package github

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

	"github.com/bradleyfalzon/ghinstallation"
	"github.com/go-git/go-git/v6"
	gogithub "github.com/google/go-github/github"

	gogithttp "github.com/go-git/go-git/v6/plumbing/transport/http"
)

type Repository struct {
	Name           string // Full repo name like zoriya/cish
	CloneURL       string
	InstallationID int64
}

func (r *Repository) ClonePath() string {
	return fmt.Sprintf("/tmp/%s", r.Name)
}

func (r *Repository) Clone(appID int64, appPrivateKey, ref string) error {
	itr, err := ghinstallation.NewKeyFromFile(http.DefaultTransport, appID, r.InstallationID, appPrivateKey)
	if err != nil {
		return err
	}

	client := gogithub.NewClient(&http.Client{Transport: itr})
	installToken, _, err := client.Apps.CreateInstallationToken(context.Background(), r.InstallationID)
	if err != nil {
		fmt.Errorf("failed to get install token with err: %w", err)
		return err
	}
	_, err = git.PlainClone(r.ClonePath(), &git.CloneOptions{
		URL: r.CloneURL,
		Auth: &gogithttp.BasicAuth{
			Username: "cish", // yes, this can be anything except an empty string
			Password: *installToken.Token,
		},
		Progress: os.Stdout,
	})
	if err != nil {
		return err
	}
	return nil
}

func (r *Repository) ListJobs(eventType string) ([]string, error) {
	entries, err := os.ReadDir(r.CloneURL + "/.cish/" + eventType) // eventType = push | pull_request | tags
	if err != nil {
		log.Fatal(err)
		return nil, err
	}
	res := []string{}
	for _, e := range entries {
		res = append(res, fmt.Sprintf("%s/.cish/%s/%s", r.Name, eventType, e.Name()))
	}
	return res, nil
}