ALR

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/*
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 * ALR - Any Linux Repository
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 * Copyright (C) 2024 Евгений Храмов
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 *
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 * This program is free software: you can redistribute it and/or modify
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 * it under the terms of the GNU General Public License as published by
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 * the Free Software Foundation, either version 3 of the License, or
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 * (at your option) any later version.
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 *
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 * This program is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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 * GNU General Public License for more details.
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 *
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 * You should have received a copy of the GNU General Public License
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 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
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 */
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package config
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import (
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	"context"
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	"os"
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	"sync"
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	"github.com/pelletier/go-toml/v2"
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	"plemya-x.ru/alr/internal/types"
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	"plemya-x.ru/alr/pkg/loggerctx"
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)
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var defaultConfig = &types.Config{
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	RootCmd:          "sudo",
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	PagerStyle:       "native",
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	IgnorePkgUpdates: []string{},
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	Repos: []types.Repo{
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		{
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			Name: "default",
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			URL:  "https://gitea.plemya-x.ru/xpamych/xpamych-alr-repo.git",
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		},
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	},
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}
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var (
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	configMtx sync.Mutex
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	config    *types.Config
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)
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// Config returns a ALR configuration struct.
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// The first time it's called, it'll load the config from a file.
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// Subsequent calls will just return the same value.
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func Config(ctx context.Context) *types.Config {
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	configMtx.Lock()
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	defer configMtx.Unlock()
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	log := loggerctx.From(ctx)
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	if config == nil {
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		cfgFl, err := os.Open(GetPaths(ctx).ConfigPath)
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		if err != nil {
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			log.Warn("Error opening config file, using defaults").Err(err).Send()
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			return defaultConfig
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		}
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		defer cfgFl.Close()
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		// Copy the default configuration into config
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		defCopy := *defaultConfig
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		config = &defCopy
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		config.Repos = nil
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		err = toml.NewDecoder(cfgFl).Decode(config)
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		if err != nil {
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			log.Warn("Error decoding config file, using defaults").Err(err).Send()
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			// Set config back to nil so that we try again next time
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			config = nil
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			return defaultConfig
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		}
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	}
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	return config
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}
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