package commonutils

import (
	"context"
	"errors"
	"net/http"

	"github.com/google/go-github/v41/github"
)

var ErrNoWorkflowRuns = errors.New("no previous workflow runs found")
var ErrWorkflowNotFound = errors.New("no workflow found, file missing")

func GetLatestWorkflowRun(client *github.Client, owner, repo, filename, branch string) (*github.WorkflowRun, error) {
	workflowRuns, ghResponse, err := client.Actions.ListWorkflowRunsByFileName(
		context.Background(), owner, repo, filename, &github.ListWorkflowRunsOptions{
			Branch: branch,
			ListOptions: github.ListOptions{
				Page:    1,
				PerPage: 1,
			},
		},
	)

	if ghResponse.StatusCode == http.StatusNotFound {
		return nil, ErrWorkflowNotFound
	}

	if err != nil {
		return nil, err
	}

	if workflowRuns.GetTotalCount() == 0 {
		return nil, ErrNoWorkflowRuns
	}

	return workflowRuns.WorkflowRuns[0], nil
}