package main

import (
	"context"
	"flag"
	"fmt"
	"os"
	"os/signal"
	"syscall"

	"git.5iot.com/iotlcm-public/iotlcm-bot/internal/archive"
	"git.5iot.com/iotlcm-public/iotlcm-bot/internal/config"
	"git.5iot.com/iotlcm-public/iotlcm-bot/internal/feishu"
	"git.5iot.com/iotlcm-public/iotlcm-bot/internal/notify"
	"git.5iot.com/iotlcm-public/iotlcm-bot/internal/render"
	"git.5iot.com/iotlcm-public/iotlcm-bot/internal/state"
)

func main() {
	if len(os.Args) < 2 {
		usage()
	}
	switch os.Args[1] {
	case "render":
		renderCommand(os.Args[2:])
	case "send":
		sendCommand(os.Args[2:])
	case "send-text":
		sendTextCommand(os.Args[2:])
	case "watch":
		watchCommand(os.Args[2:])
	default:
		usage()
	}
}

func renderCommand(args []string) {
	fs := flag.NewFlagSet("render", flag.ExitOnError)
	file := fs.String("file", "", "path to a Worker Run JSON")
	environment := fs.String("environment", "preview", "environment label")
	jsonOutput := fs.Bool("json", false, "print Feishu interactive-card JSON")
	fs.Parse(args)
	if *file == "" {
		fmt.Fprintln(os.Stderr, "render requires --file")
		os.Exit(2)
	}
	a, err := archive.Load(*file)
	if err != nil {
		fail(err)
	}
	if *jsonOutput {
		body, err := render.Card(a, *environment)
		if err != nil {
			fail(err)
		}
		fmt.Println(string(body))
		return
	}
	fmt.Println(render.Text(a, *environment))
}

func sendCommand(args []string) {
	fs := flag.NewFlagSet("send", flag.ExitOnError)
	file := fs.String("file", "", "path to a Worker Run JSON")
	configPath := fs.String("config", "", "path to YAML config")
	force := fs.Bool("force", false, "send even when the Run was already marked sent")
	fs.Parse(args)
	if *file == "" || *configPath == "" {
		fmt.Fprintln(os.Stderr, "send requires --file and --config")
		os.Exit(2)
	}
	cfg, err := config.Load(*configPath)
	if err != nil {
		fail(err)
	}
	if err := cfg.ValidateSend(); err != nil {
		fail(err)
	}
	client := feishu.NewClient(cfg.Feishu.AppID, cfg.Feishu.AppSecret, cfg.Feishu.ChatID)
	svc := notify.New(cfg.ArchiveDir, cfg.Environment, cfg.PollDuration, state.New(cfg.StateDir), client, notify.DefaultLogger())
	if err := svc.SendFile(context.Background(), *file, *force); err != nil {
		fail(err)
	}
}

func sendTextCommand(args []string) {
	fs := flag.NewFlagSet("send-text", flag.ExitOnError)
	configPath := fs.String("config", "", "path to YAML config")
	text := fs.String("text", "", "text to send")
	fs.Parse(args)
	if *configPath == "" || *text == "" {
		fmt.Fprintln(os.Stderr, "send-text requires --config and --text")
		os.Exit(2)
	}
	cfg, err := config.Load(*configPath)
	if err != nil {
		fail(err)
	}
	if err := cfg.ValidateSend(); err != nil {
		fail(err)
	}
	client := feishu.NewClient(cfg.Feishu.AppID, cfg.Feishu.AppSecret, cfg.Feishu.ChatID)
	if err := client.SendText(context.Background(), *text); err != nil {
		fail(err)
	}
	fmt.Println("Feishu text message sent")
}

func watchCommand(args []string) {
	fs := flag.NewFlagSet("watch", flag.ExitOnError)
	configPath := fs.String("config", "", "path to YAML config")
	fs.Parse(args)
	if *configPath == "" {
		fmt.Fprintln(os.Stderr, "watch requires --config")
		os.Exit(2)
	}
	cfg, err := config.Load(*configPath)
	if err != nil {
		fail(err)
	}
	if err := cfg.ValidateSend(); err != nil {
		fail(err)
	}
	ctx, stop := signal.NotifyContext(context.Background(), os.Interrupt, syscall.SIGTERM)
	defer stop()
	client := feishu.NewClient(cfg.Feishu.AppID, cfg.Feishu.AppSecret, cfg.Feishu.ChatID)
	svc := notify.New(cfg.ArchiveDir, cfg.Environment, cfg.PollDuration, state.New(cfg.StateDir), client, notify.DefaultLogger())
	if err := svc.Watch(ctx); err != nil && err != context.Canceled {
		fail(err)
	}
}

func usage() {
	fmt.Fprintln(os.Stderr, "usage: iotlcm-bot <render|send|send-text|watch> [options]")
	os.Exit(2)
}
func fail(err error) { fmt.Fprintln(os.Stderr, "iotlcm-bot:", err); os.Exit(1) }