package main

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

	"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)
	}

	// STEP 1 MIGRATE USERS
	{
		f1, err := os.Open(cfg.Users.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 + "/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(cfg.Gitea.URL + "/admin/users"))
			if err != nil {
				panic(err)
			}

			u := domain.UserCreateRequest{
				Email:              record[4],
				FullName:           record[2],
				LoginName:          record[1],
				MustChangePassword: true,
				Password:           cfg.Users.DefaultPassword,
				Restricted:         false,
				SendNotify:         false,
				SourceID:           0,
				Username:           record[1],
			}

			bts, err := json.Marshal(u)
			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 {
				bts, _ := io.ReadAll(resp.Body)

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

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

			var uResp domain.UserGet
			if err := json.Unmarshal(bts, &uResp); err != nil {
				panic(err)
			}

			if _, err := outputFile.WriteString(fmt.Sprintf("USER %d | %s | OK\n", uResp.ID, uResp.Email)); 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
}