package main

import (
	"encoding/json"
	"fmt"
	"io"
	"os"

	"github.com/tailscale/hujson"
)

type Config struct {
	ForgeEndpoint string   `json:"forge_url"`
	Keys          []string `json:"keys"`
}

type contextKey string

const configKey contextKey = "config"

func ReadConfig(reader io.Reader) (*Config, error) {
	data, err := io.ReadAll(reader)
	if err != nil {
		return nil, fmt.Errorf("error reading config data: %w", err)
	}
	config := Config{}
	data, err = hujson.Standardize(data)
	if err != nil {
		return nil, fmt.Errorf("failed to parse json: %w", err)
	}
	if err := json.Unmarshal(data, &config); err != nil {
		return nil, fmt.Errorf("error parsing json to api keys and target url: %w", err)
	}

	return &config, nil
}

func ReadConfigFile(filename string) (*Config, error) {
	file, err := os.Open(filename)
	if err != nil {
		return nil, fmt.Errorf("cannot open config file for reading. err: %w", err)
	}
	defer file.Close()

	return ReadConfig(file)
}