package config

import (
	"log"
	"path/filepath"

	"github.com/adrg/xdg"
)

type DatabaseConfig struct {
	Socket   string
	Host     string
	Port     int
	Username string
	Password string
	Database string
	Options  string
}

type ServerConfig struct {
	Address     string
	TemplateDir string
	StaticDir   string
}

type Config struct {
	Database DatabaseConfig

	Server ServerConfig

	AllowRoot bool
}

var config = Config{
	Database: DatabaseConfig{
		Host:     "localhost",
		Port:     5432,
		Database: "feedizer",
		Options:  "sslmode=require",
	},
	Server: ServerConfig{
		Address:     ":3000",
		TemplateDir: "../../templates",
		StaticDir:   "../../static",
	},
}

const appName = "feedizer"

func Load() (*Config, error) {
	numXdgDirs := len(xdg.ConfigDirs)
	paths := make([]string, numXdgDirs+2)
	for i, path := range xdg.ConfigDirs {
		paths[numXdgDirs-i-1] = filepath.Join(path, appName, appName+".yaml")
	}
	paths[numXdgDirs] = filepath.Join(xdg.ConfigHome, appName, appName+".yaml")
	paths[numXdgDirs+1] = appName + ".yaml"

	used, err := ReadFiles(paths, &config)
	if err != nil {
		return nil, err
	}
	log.Println("config: search paths are:", paths)
	log.Println("config: using config files:", used)

	envAvailable, envUsed := ReadEnv(&config, appName)
	log.Println("config: usable env vars:", envAvailable)
	log.Println("config: using env vars:", envUsed)

	return &config, nil
}