package main

import (
	"regexp"
	"testing"
)

func TestParseConfigFormats(t *testing.T) {
	// An Unreal-style option list
	list := parseConfig("/server/Game/Saved/Config/LinuxServer/GameSettings.ini", "[/Script/Game.WorldSettings]\n"+
		`OptionSettings=(Difficulty=None,ExpRate=1.000000,ServerName="Default Server",CrossplayPlatforms=(Steam,Xbox,PS5,Mac))`)
	want := map[string]string{"Difficulty": "None", "ExpRate": "1.000000", "ServerName": "Default Server", "CrossplayPlatforms": "(Steam,Xbox,PS5,Mac)"}
	if len(list) != len(want) {
		t.Fatalf("option list: got %d settings: %+v", len(list), list)
	}
	for _, s := range list {
		if s.Section != "OptionSettings" || want[s.Key] != s.Value {
			t.Errorf("option list setting %+v", s)
		}
	}

	// A server.properties file
	mc := parseConfig("/data/server.properties", "#Server properties\nmax-players=20\nmotd=A Server\nlevel-seed=\n")
	if len(mc) != 3 || mc[0].Key != "max-players" || mc[0].Value != "20" || mc[2].Value != "" {
		t.Errorf("properties: %+v", mc)
	}

	// INI sections and comments
	ini := parseConfig("/server/x.ini", "; comment\n[ServerSettings]\nRCONPort = 27020\n[Other]\nKey=\"quoted\"\n")
	if len(ini) != 2 || ini[0].Section != "ServerSettings" || ini[0].Value != "27020" || ini[1].Value != "quoted" {
		t.Errorf("ini: %+v", ini)
	}

	// JSON, one level deep
	js := parseConfig("/config/settings.json", `{"name":"x","limits":{"players":8},"tags":["a"]}`)
	if len(js) != 3 || js[0].Key != "players" || js[0].Section != "limits" || js[0].Value != "8" {
		t.Errorf("json: %+v", js)
	}
}

func TestSuggestPattern(t *testing.T) {
	for line, mustMatch := range map[string]string{
		`[01:32:38 INFO]: Done (24.283s)! For help, type "help"`:                                      `[03:01:02 INFO]: Done (7.5s)! For help, type "help"`,
		`[2026.10.25-03.10.36:455][  0]Server has completed startup and is now advertising for join.`: `[2026.10.26-11.00.00:001][ 12]Server has completed startup and is now advertising for join.`,
		`2026-10-25T03:10:36Z Server started on port 7777`:                                            `2026-10-26T09:00:00Z Server started on port 8000`,
	} {
		p := suggestPattern(line)
		if p == "" {
			t.Errorf("no pattern for %q", line)
			continue
		}
		re := regexp.MustCompile(p)
		if !re.MatchString(line) || !re.MatchString(mustMatch) {
			t.Errorf("pattern %q should match %q and %q", p, line, mustMatch)
		}
	}
	if p := suggestPattern("[12:00:00] ok"); p != "" {
		t.Errorf("too-short line gave pattern %q", p)
	}
}

func TestAnalyzeLines(t *testing.T) {
	r := &bootReport{}
	analyzeLines(r, []logLine{
		{At: 1, Source: "console", Text: "Starting server"},
		{At: 2, Source: "console", Text: "Failed to load optional module"},
		{At: 9, Source: "console", Text: "[09:00:01 INFO]: Done (8.1s)! For help, type \"help\""},
		{At: 9, Source: "console", Text: "[09:00:01 INFO]: Thread RCON Listener started"},
		// After the stop at 200s: the shutdown, as a wrapper script prints it
		{At: 201, Source: "console", Text: "[06:01:39] [RCON Listener #1/INFO]: Thread RCON Client /0:0:0:0:0:0:0:1 started"},
		{At: 202, Source: "console", Text: "2026-10-25T06:01:39.976Z\tINFO\tmc-server-runner\tDone"},
	}, []logLine{{At: -1, Source: "/server/x.log", Text: "Listening on 0.0.0.0:7777"}}, 200)
	if len(r.ErrorLines) != 1 {
		t.Fatalf("errors %v", r.ErrorLines)
	}
	// The last ready line before the stop, not the shutdown's "Done"
	if r.SuggestedExample != `[09:00:01 INFO]: Done (8.1s)! For help, type "help"` {
		t.Errorf("example = %q", r.SuggestedExample)
	}

	// No console candidate: fall back to the first one in a log file
	r = &bootReport{}
	analyzeLines(r, []logLine{{At: 1, Source: "console", Text: "booting"}},
		[]logLine{{At: -1, Source: "/server/a.log", Text: "Server has completed startup and is now advertising for join."},
			{At: -1, Source: "/server/a.log", Text: "Server shutdown done"}}, 100)
	if r.SuggestedExample != "Server has completed startup and is now advertising for join." {
		t.Errorf("file fallback example = %q", r.SuggestedExample)
	}
}

func TestConfigCandidates(t *testing.T) {
	for rel, want := range map[string]bool{
		"server.properties":                   true,
		"Game/Saved/Config/LinuxServer/x.ini": true,
		"Game/Saved/Logs/Server.log":          true,
		"steamapps/appmanifest_123.acf":       false,
		"Engine/Config/BaseEngine.ini":        false,
		"plugins/SomePlugin/config.yml":       false,
		"world/level.dat":                     false,
	} {
		if got := isConfigCandidate(rel, 1000); got != want {
			t.Errorf("isConfigCandidate(%q) = %v, want %v", rel, got, want)
		}
	}
}