// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <https://www.gnu.org/licenses/>.

package main

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

	"headshed/infctl-cli/app"
	"headshed/infctl-cli/config"
)

type customMessageOnlyHandler struct {
	output *os.File
}

func (h *customMessageOnlyHandler) Enabled(_ context.Context, _ slog.Level) bool {
	return true
}

func (h *customMessageOnlyHandler) Handle(_ context.Context, r slog.Record) error {
	// Directly retrieve the message from the record
	msg := r.Message
	if msg != "" {
		_, err := fmt.Fprintln(h.output, msg)
		return err
	}
	return nil
}

func (h *customMessageOnlyHandler) WithAttrs(_ []slog.Attr) slog.Handler {
	return h
}

func (h *customMessageOnlyHandler) WithGroup(_ string) slog.Handler {
	return h
}

func main() {

	var levelVar slog.LevelVar
	levelVar.Set(slog.LevelDebug)

	var logger *slog.Logger
	if os.Getenv("LOG_FORMAT") == "basic" {
		logger = slog.New(slog.NewTextHandler(os.Stdout, &slog.HandlerOptions{
			ReplaceAttr: func(groups []string, a slog.Attr) slog.Attr {
				if a.Key == slog.TimeKey {
					return slog.Attr{}
				}
				return a
			},
		}))

	} else if os.Getenv("LOG_FORMAT") == "none" {
		logger = slog.New(&customMessageOnlyHandler{output: os.Stdout})

	} else {
		logger = slog.New(slog.NewJSONHandler(os.Stdout, &slog.HandlerOptions{Level: &levelVar}))
	}

	slog.SetDefault(logger)

	if err := run(); err != nil {
		log.Fatalf("Application error: %v", err)
	}
}

func run() error {

	wd, err := os.Getwd()
	if err != nil {
		return fmt.Errorf("failed to get current directory: %w", err)
	}
	baseConfigPath := wd + string(os.PathSeparator) + "base.json"
	configPath := wd + string(os.PathSeparator) + "config.json"

	baseConfig, err := config.ReadBaseConfig(baseConfigPath)
	if err != nil {
		return fmt.Errorf("error reading base config file: %w", err)
	}
	customerConfig, err := config.ReadCustomerConfig(configPath)
	if err != nil {
		return fmt.Errorf("error reading customer config file: %w", err)
	}
	appState, err := app.NewAppState(customerConfig, baseConfig, "app.db")
	if err != nil {
		return fmt.Errorf("failed to initialize app state: %w", err)
	}
	defer func() {
		if err := appState.DB.Close(); err != nil {
			log.Printf("Error closing database: %v", err)
		}
	}()

	if err := appState.CreatePipeline(); err != nil {
		return fmt.Errorf("failed to create customer project: %w", err)
	}

	return nil
}