package main

import (
	"bytes"
	"context"
	"encoding/csv"
	"encoding/json"
	"errors"
	"fmt"
	"io"
	"net/http"
	"net/url"
	"os"
	"os/signal"
	"path"
	"runtime"
	"strconv"
	"syscall"
	"time"

	"gitea.urkob.com/mcr-swiss/gogstea/internal/domain"
	"gitea.urkob.com/mcr-swiss/gogstea/kit/config"
)

func main() {
	ctx, cancel := context.WithCancel(signalContext(context.Background()))
	defer cancel()

	cfgFile := os.Getenv("CONFIG_FILE")
	if cfgFile == "" {
		// Get root path
		_, filename, _, _ := runtime.Caller(0)
		cfgFile = path.Join(path.Dir(filename), "configs", "app.yml")
	}
	cfg, err := config.LoadConfig(cfgFile)
	if err != nil {
		panic(err)
	}

	wd, err := os.Getwd()
	if err != nil {
		panic(err)
	}

	f1, err := os.Open(cfg.Issues.CSVPath)
	if err != nil {
		panic(err)
	}
	defer f1.Close()

	r1 := csv.NewReader(f1)
	r1.Comma = ',' // Set the delimiter to comma
	r1.LazyQuotes = true
	r1.TrimLeadingSpace = false

	outputFile, err := os.Create(wd + "/issues-output.txt")
	if err != nil {
		panic(err)
	}
	defer outputFile.Close()

	for {
		record, err := r1.Read()
		if err != nil {
			if !errors.Is(err, io.EOF) {
				panic(err)
			}
			break // Stop on EOF or other errors.
		}

		cli := http.DefaultClient

		parsedURL, err := url.Parse(fmt.Sprintf("%s/repos/%s/%s/issues", cfg.Gitea.URL, record[1], record[0]))
		if err != nil {
			panic(err)
		}

		isClosedInt, err := strconv.Atoi(record[7])
		if err != nil {
			panic(err)
		}

		var isClosed bool
		switch isClosedInt {
		case 0:
			isClosed = false
		case 1:
			isClosed = false
		default:
			panic(fmt.Errorf("isclosed is %d", isClosedInt))
		}

		issue := domain.IssueCreateRequest{
			Assignee:  record[2],
			Assignees: nil,
			Body:      record[4],
			Closed:    isClosed,
			DueDate:   time.Time{},
			Labels:    []int{},
			Milestone: 0,
			Ref:       "",
			Title:     record[3],
		}

		bts, err := json.Marshal(issue)
		if err != nil {
			panic(err)
		}

		req, err := http.NewRequestWithContext(ctx, http.MethodPost, parsedURL.String(), bytes.NewReader(bts))
		if err != nil {
			panic(err)
		}

		req.Header.Add("Authorization", "token "+cfg.Gitea.ApiKey)
		req.Header.Add("Content-Type", "application/json")
		resp, err := cli.Do(req)
		if err != nil {
			panic(err)
		}

		if resp.StatusCode != http.StatusOK && resp.StatusCode != http.StatusCreated {
			bts, _ := io.ReadAll(resp.Body)

			if _, err := outputFile.WriteString(fmt.Sprintf("ERROR ISSUE | %d | %s | %s\n", resp.StatusCode, parsedURL.String(), string(bts))); err != nil {
				panic(err)
			}
			continue
		}

		bts, err = io.ReadAll(resp.Body)
		if err != nil {
			panic(err)
		}

		if _, err := outputFile.WriteString(fmt.Sprintf("OK ISSUE | %s \n", string(bts))); err != nil {
			panic(err)
		}
	}
}

func signalContext(ctx context.Context) context.Context {
	ctx, cancel := context.WithCancel(ctx)

	sigs := make(chan os.Signal, 1)
	signal.Notify(sigs, os.Interrupt, syscall.SIGINT, syscall.SIGTERM)

	go func() {
		<-sigs
		signal.Stop(sigs)
		close(sigs)
		cancel()
	}()

	return ctx
}