package main

import (
	"crypto/rand"
	"fmt"
	"log/slog"
	"net/http"
	"path"
	"path/filepath"

	"github.com/LMBishop/scrapbook/api"
	"github.com/LMBishop/scrapbook/pkg/auth"
	"github.com/LMBishop/scrapbook/pkg/config"
	"github.com/LMBishop/scrapbook/pkg/constants"
	"github.com/LMBishop/scrapbook/pkg/index"
	"github.com/LMBishop/scrapbook/pkg/server"
	"github.com/LMBishop/scrapbook/web"
)

func main() {
	slog.Info("welcome to scrapbook")

	var cfg config.MainConfig
	err := config.ReadMainConfig(filepath.Join(constants.SysConfDir, "config.toml"), &cfg)
	if err != nil {
		panic(fmt.Errorf("main config read failed: %w", err))
	}
	err = config.ValidateMainConfig(&cfg)
	if err != nil {
		panic(fmt.Errorf("main config validation failed: %w", err))
	}

	siteIndex := index.NewSiteIndex()

	err = index.ScanDirectory(path.Join(constants.SysDataDir, "sites"), siteIndex)
	if err != nil {
		panic(fmt.Errorf("could not scan data directory: %w", err))
	}

	slog.Info("initial data directory scan complete", "sites", len(siteIndex.GetSites()))

	if cfg.Command.Host == "" {
		slog.Warn("command interface host is empty - neither api or web interface will be accessible")
	}

	if cfg.Command.Secret == "" {
		slog.Warn("command interface secret is empty - neither api or web interface will be accessible")
	}

	secretKey := make([]byte, 32)
	rand.Read(secretKey)

	authenticator := auth.NewAuthenticator(secretKey)

	mux := http.NewServeMux()

	mux.Handle(fmt.Sprintf("%s/api/", cfg.Command.Host), http.StripPrefix("/api/", api.NewMux(&cfg, siteIndex)))
	mux.Handle(fmt.Sprintf("%s/", cfg.Command.Host), web.NewMux(&cfg, siteIndex, authenticator))
	mux.HandleFunc("/", server.ServeSite(siteIndex))

	err = http.ListenAndServe(fmt.Sprintf("%s:%d", cfg.Listen.Address, cfg.Listen.Port), mux)
	slog.Error("http server closing", "reason", err.Error())
}