From d44276a56e632c9b2d508d31bb3d941472a78c22 Mon Sep 17 00:00:00 2001
From: kayomn <kayomn@kayomn.net>
Date: Mon, 2 Jan 2023 14:41:32 +0000
Subject: [PATCH] Add functionality for listing game associations

---
 main.go    | 31 +++++++++++++++++++++++++++++++
 manager.go | 30 ++++++++++++++++++++++++++++++
 2 files changed, 61 insertions(+)

diff --git a/main.go b/main.go
index 48b209e..b1ccdec 100644
--- a/main.go
+++ b/main.go
@@ -3,6 +3,7 @@ package main
 import (
 	"fmt"
 	"os"
+	"strings"
 )
 
 type Command struct {
@@ -103,6 +104,36 @@ var commands = []Command{
 			return "cleaned", nil
 		},
 	},
+
+	{
+		Name:        "list",
+		Description: "List all known game associations by name followed by data path in a newline-separated list",
+		Arguments:   []string{},
+		IsVarargs:   false,
+
+		Action: func(requiredArguments []string, arguments []string) (string, error) {
+			if len(arguments) != 0 {
+				return "", fmt.Errorf("expected zero arguments")
+			}
+
+			var gameDataPaths, loadError = LoadGames()
+
+			if loadError != nil {
+				return "", loadError
+			}
+
+			var stringBuilder = strings.Builder{}
+
+			for game, dataPath := range gameDataPaths {
+				stringBuilder.WriteString(game)
+				stringBuilder.WriteString(" \"")
+				stringBuilder.WriteString(dataPath)
+				stringBuilder.WriteByte('"')
+			}
+
+			return stringBuilder.String(), nil
+		},
+	},
 }
 
 func main() {
diff --git a/manager.go b/manager.go
index e668427..940688e 100644
--- a/manager.go
+++ b/manager.go
@@ -317,6 +317,36 @@ func DeployGameMods(gameName string, modArchivePaths []string) error {
 	return nil
 }
 
+func LoadGames() (map[string]string, error) {
+	var gameDataPaths = make(map[string]string)
+
+	if iniFile, openError := os.Open(gamesIniPath); openError == nil {
+		defer func() {
+			if closeError := iniFile.Close(); closeError != nil {
+				panic(closeError)
+			}
+		}()
+
+		var parser = ini.NewParser(iniFile)
+
+		for entry := parser.Parse(); !(parser.IsEnd()); entry = parser.Parse() {
+			var section = parser.Section()
+
+			if entry.Key == "path" {
+				gameDataPaths[section] = entry.Value
+			}
+		}
+
+		if parseError := parser.Err(); parseError != nil {
+			return gameDataPaths, parseError
+		}
+	} else if !(os.IsNotExist(openError)) {
+		return gameDataPaths, openError
+	}
+
+	return gameDataPaths, nil
+}
+
 func RemoveGame(gameName string) error {
 	if cleanError := CleanGameMods(gameName); cleanError != nil {
 		return cleanError