package main

import (
	"context"
	"flag"
	"log/slog"
	"os"
	"strconv"
	"time"

	"github.com/eagleusb/proxycon/internal/data"
	"github.com/eagleusb/proxycon/internal/server"
)

var (
	version   = "dev"
	buildTime = "unknown"
)

func main() {
	port := flag.Int("port", 8080, "HTTP listening port")
	verbose := flag.Bool("verbose", false, "enable DEBUG log level")
	page := flag.Int("page", 10, "page size for /list endpoint")
	versionFlag := flag.Bool("version", false, "print version and exit")

	flag.Parse()

	if *versionFlag {
		slog.Info("proxycon version", "vers", version, "built", buildTime)
		os.Exit(0)
	}

	if *port <= 1024 || *port > 65535 {
		slog.Error("invalid port number", "port", *port)
		os.Exit(1)
	}

	opts := &slog.HandlerOptions{Level: slog.LevelInfo}
	if *verbose {
		opts.Level = slog.LevelDebug
	}
	logger := slog.New(slog.NewTextHandler(os.Stdout, opts))
	slog.SetDefault(logger)

	datasource := data.NewBitcoinPrices()
	ctx, cancel := context.WithTimeout(context.Background(), 60*time.Second)
	defer cancel()

	if err := datasource.SetPrices(ctx); err != nil {
		slog.Error("failed to fetch prices from datasource", "error", err)
		os.Exit(1)
	}

	addr := ":" + strconv.Itoa(*port)
	slog.Info("starting proxycon", "addr", addr, "page_size", *page, "version", version)
	if err := server.NewServer(datasource, *page).Listen(addr); err != nil {
		slog.Error("proxycon init failed", "error", err)
		os.Exit(1)
	}
}