package main

import (
	"fmt"
	"log/slog"
	"os"
	"time"

	"github.com/spf13/pflag"
)

type CLIArgs struct {
	Verbose      bool
	AlwaysNotify bool
	ConfigPath   string
}

func parseCliArgs() *CLIArgs {
	var cfg CLIArgs

	// Define flags bound directly to the struct fields
	pflag.BoolVarP(&cfg.Verbose, "verbose", "v", false, "Enable verbose (debug) logging")
	pflag.BoolVarP(&cfg.AlwaysNotify, "always-notify", "a", false, "Always send a ntfy notification, even if no availability is found")
	pflag.StringVarP(&cfg.ConfigPath, "config", "c", defaultConfigFile(), "Path to the JSON/YAML config file")

	pflag.Parse()
	return &cfg
}

func configureLogger(verbose bool) {
	logLevel := slog.LevelInfo
	if verbose {
		logLevel = slog.LevelDebug
	}
	logHandler := slog.NewTextHandler(os.Stdout, &slog.HandlerOptions{
		Level: logLevel,
	})
	slog.SetDefault(slog.New(logHandler))
}

func main() {
	cliArgs := parseCliArgs()
	configureLogger(cliArgs.Verbose)

	// Parse config file
	config, err := loadConfig(cliArgs.ConfigPath)
	if err != nil {
		slog.Error("Failed to load config", "config file", cliArgs.ConfigPath, "err", err)
		os.Exit(1)
	}
	slog.Debug("Loaded config", "Ntfy Channel", config.NtfyChannel)

	// Check for availabilities
	notifier := NewNotifier(config.NtfyChannel)
	doctoClient := NewDoctoClient()
	startDate := time.Now().Format(time.RFC3339)
	for _, doctor := range config.Doctors {
		hasAvailability, err := doctoClient.check(doctor, startDate)
		if err != nil {
			slog.Error("Failed to check Doctolib", "doctor", doctor.Name, "err", err)
			continue
		}

		if hasAvailability {
			slog.Info("DoctoCheck FOUND", "doctor", doctor.Name)
			msg := fmt.Sprintf("Availability found for %s, check Doctolib!", doctor.Name)
			err = notifier.Send(msg)
			if err != nil {
				slog.Error("Failed to send notification",
					"doctor", doctor.Name,
					"channel", config.NtfyChannel,
					"err", err)
				continue
			}
		}

		if cliArgs.AlwaysNotify && !hasAvailability {
			msg := fmt.Sprintf("[DEBUG] No availability found for %s", doctor.Name)
			err = notifier.Send(msg)
			if err != nil {
				slog.Error("Failed to send notification",
					"doctor", doctor.Name,
					"channel", config.NtfyChannel,
					"err", err)
				continue
			}
		}
	}
}