package main

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

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

var okStatuses = []int{
	http.StatusOK,
	http.StatusCreated,
	http.StatusNoContent,
}

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.Collaborators.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 + "/collab-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/collaborators/%s", cfg.Gitea.URL, record[1], record[0], record[2]))
		if err != nil {
			panic(err)
		}

		// permission, err := strconv.Atoi(record[3])
		// if err != nil {
		// 	panic(err)
		// }

		collabReq := domain.CollaboratorCreateRequest{
			Permission: record[4],
		}

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

		req, err := http.NewRequestWithContext(ctx, http.MethodPut, 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 !slices.Contains(okStatuses, resp.StatusCode) {
			bts, _ := io.ReadAll(resp.Body)

			if _, err := outputFile.WriteString(fmt.Sprintf("ERROR COLLAB | %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 COLLAB | %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
}