package cmd

import (
	"github.com/urfave/cli"
	"html/template"
	"io"
	"os"
	"sort"
	"strings"
)
import "code.gitea.io/sdk/gitea"

const issueTemplate = `
{{range $issue := . }}
## {{$issue.Title}}

{{range $label := $issue.Labels}}{{$label.Name}} {{end}}

{{$issue.Body}}

{{end}}
`

var ExportAll = cli.Command{
	Name:        "export-all",
	Description: "Exports all open issues into a markdown file",
	ArgsUsage:   "<owner>/<repository>",
	Flags: []cli.Flag{
		cli.StringFlag{
			Name:      "output,o",
			Usage:     "output file",
			TakesFile: true,
		},
		cli.StringFlag{
			Name:     "token",
			Usage:    "Gitea access token",
			Required: true,
		},
		cli.StringFlag{
			Name:     "url",
			Usage:    "Gitea URL",
			Required: true,
		},
	},
	Action: exportAll,
}

func exportAll(ctx *cli.Context) error {
	token := ctx.String("token")
	url := ctx.String("url")
	outputFile := ctx.String("output")
	client := gitea.NewClient(url, token)

	splittedArgs := strings.Split(ctx.Args().First(), "/")

	issues, err := client.ListRepoIssues(splittedArgs[0], splittedArgs[1], gitea.ListIssueOption{
		State: "open",
		Type:  "issue",
	})
	if err != nil {
		return err
	}
	sort.SliceStable(issues, func(i, j int) bool {
		return true
	})
	return writeIssues(outputFile, issues)
}

func writeIssues(outputFile string, issues []*gitea.Issue) (err error) {
	var output io.Writer
	if len(outputFile) > 0 {
		output, err = os.Create(outputFile)
		if err != nil {
			return err
		}
	} else {
		output = os.Stdout
	}

	tmpl, err := template.New("issues").Parse(issueTemplate)
	if err != nil {
		return err
	}
	return tmpl.Execute(output, issues)
}