package oplcli

import (
	"bufio"
	"fmt"
	"log/slog"
	"os"
	"strings"
)

func loadGamelist(filepath string) (map[string]string, error) {
	file, err := os.Open(filepath)
	if err != nil {
		return nil, fmt.Errorf("Failed to open file: %w", err)
	}
	defer file.Close()

	gameList := make(map[string]string)

	lineNum := 0
	scanner := bufio.NewScanner(file)
	for scanner.Scan() {
		line := scanner.Text()
		lineNum++

		substrings := strings.SplitN(line, " ", 2)

		if len(substrings) != 2 {
			slog.Warn("Line in gamelist is malformed", "line", lineNum)
			continue
		}

		key := substrings[0]
		value := substrings[1]

		gameList[key] = value
	}

	return gameList, nil
}