package main

import (
	"context"
	"log/slog"
	"net/http"
	"os"

	"github.com/golang-migrate/migrate/v4"
	_ "github.com/golang-migrate/migrate/v4/database/postgres"
	_ "github.com/golang-migrate/migrate/v4/source/file"

	"github.com/vasyansk/imap-copier/internal/config"
	"github.com/vasyansk/imap-copier/internal/httpapi"
	"github.com/vasyansk/imap-copier/internal/orchestrator"
	"github.com/vasyansk/imap-copier/internal/store"
	"github.com/vasyansk/imap-copier/internal/wshub"
)

func main() {
	slog.SetDefault(slog.New(slog.NewJSONHandler(os.Stdout, nil)))
	cfg, err := config.Load()
	if err != nil {
		slog.Error("config", "err", err)
		os.Exit(1)
	}
	if err := runMigrations(cfg.DatabaseURL); err != nil {
		slog.Error("migrate", "err", err)
		os.Exit(1)
	}
	st, err := store.New(context.Background(), cfg.DatabaseURL)
	if err != nil {
		slog.Error("store", "err", err)
		os.Exit(1)
	}
	hub := wshub.New()
	orch := orchestrator.New(st, hub, cfg.EncKey, cfg.WorkerConcurrency)
	srv := httpapi.NewServer(cfg, st, orch, hub)

	slog.Info("listening", "addr", cfg.HTTPAddr)
	if err := http.ListenAndServe(cfg.HTTPAddr, srv.Router()); err != nil {
		slog.Error("serve", "err", err)
		os.Exit(1)
	}
}

func runMigrations(dsn string) error {
	m, err := migrate.New("file://migrations", dsn)
	if err != nil {
		return err
	}
	if err := m.Up(); err != nil && err != migrate.ErrNoChange {
		return err
	}
	return nil
}