From 2c459221704db36c4b3512e4e66432dc1eadd791 Mon Sep 17 00:00:00 2001
From: Tor Andersson <tor@ccxvii.net>
Date: Sun, 12 Nov 2023 01:22:05 +0100
Subject: Allow first player choosing rematch to select player role assignment.

Pick one of swap, keep, or random.

In case of mid-air collision, player who chose first gets to decide.
---
 server.js         | 52 ++++++++++++++++++++++++++++++++++++++++++----------
 views/rematch.pug | 55 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 97 insertions(+), 10 deletions(-)
 create mode 100644 views/rematch.pug

diff --git a/server.js b/server.js
index 23228ed..16ac288 100644
--- a/server.js
+++ b/server.js
@@ -1270,7 +1270,7 @@ const SQL_INSERT_REMATCH = SQL(`
 	insert or ignore into games
 		(owner_id, title_id, scenario, options, player_count, pace, is_private, is_random, notice)
 	select
-		$owner_id, title_id, scenario, options, player_count, pace, is_private, 0, $magic
+		$owner_id, title_id, scenario, options, player_count, pace, is_private, $random, $magic
 	from
 		games
 	where
@@ -1653,7 +1653,7 @@ app.get('/delete/:game_id', must_be_logged_in, function (req, res) {
 	res.redirect('/'+title_id)
 })
 
-function insert_replay_players(old_game_id, new_game_id, req_user_id) {
+function insert_replay_players(old_game_id, new_game_id, req_user_id, order) {
 	let game = SQL_SELECT_GAME.get(old_game_id)
 	let players = SQL_SELECT_PLAYERS_JOIN.all(old_game_id)
 	let roles = get_game_roles(game.title_id, game.scenario, parse_game_options(game.options))
@@ -1662,28 +1662,60 @@ function insert_replay_players(old_game_id, new_game_id, req_user_id) {
 	if (players.length !== n)
 		throw new Error("missing players")
 
-	if (TITLE_TABLE[game.title_id].is_symmetric)
-		shuffle(players)
-	else
+	switch (order) {
+	default:
+	case "swap":
 		players.sort((a, b) => roles.indexOf(a.role) - roles.indexOf(b.role))
-
-	for (let i = 0; i < n; ++i)
-		players[i].role = roles[(i+1) % n]
+		for (let i = 0; i < n; ++i)
+			players[i].role = roles[(i+1) % n]
+		break
+	case "keep":
+		// do nothing
+		break
+	case "shuffle":
+		// unused for now - random but known
+		shuffle(players)
+		for (let i = 0; i < n; ++i)
+			players[i].role = roles[i]
+		break
+	case "random":
+		for (let i = 0; i < n; ++i)
+			players[i].role = "Random " + (i+1)
+		break
+	}
 
 	for (let p of players)
 		SQL_INSERT_PLAYER_ROLE.run(new_game_id, p.role, p.user_id, p.user_id !== req_user_id ? 1 : 0)
 }
 
 app.get('/rematch/:old_game_id', must_be_logged_in, function (req, res) {
+	let old_game_id = req.params.old_game_id | 0
+	let magic = "\u{1F503} " + old_game_id
+	let new_game_id = SQL_SELECT_REMATCH.get(magic)
+	if (new_game_id)
+		return res.redirect("/join/" + new_game_id)
+
+	let game = SQL_SELECT_GAME.get(old_game_id)
+	let players = SQL_SELECT_PLAYERS_JOIN.all(old_game_id)
+	res.render("rematch.pug", {
+		user: req.user,
+		title: TITLE_TABLE[game.title_id],
+		game,
+		players,
+	})
+})
+
+app.post('/rematch/:old_game_id', must_be_logged_in, function (req, res) {
 	let old_game_id = req.params.old_game_id | 0
 	let magic = "\u{1F503} " + old_game_id
 	let new_game_id = 0
+	let order = req.body.order
 
 	SQL_BEGIN.run()
 	try {
-		new_game_id = SQL_INSERT_REMATCH.get({owner_id: req.user.user_id, old_game_id, magic})
+		new_game_id = SQL_INSERT_REMATCH.get({owner_id: req.user.user_id, random: order === "random" ? 1 : 0, old_game_id, magic})
 		if (new_game_id)
-			insert_replay_players(old_game_id, new_game_id, req.user.user_id)
+			insert_replay_players(old_game_id, new_game_id, req.user.user_id, order)
 		else
 			new_game_id = SQL_SELECT_REMATCH.get(magic)
 		SQL_COMMIT.run()
diff --git a/views/rematch.pug b/views/rematch.pug
new file mode 100644
index 0000000..09df6ec
--- /dev/null
+++ b/views/rematch.pug
@@ -0,0 +1,55 @@
+//- vim:ts=4:sw=4:
+doctype html
+html
+	head
+		include head
+		title= title.title_name
+	body
+		include header
+		article
+			if game.scenario === "Standard"
+				h1 #{title.title_name}
+			else
+				h1 #{title.title_name} - #{game.scenario}
+
+			div.logo
+				+gamecover(title.title_id)
+
+			p Suggest rematch with
+				each p, i in players
+					if i > 0 && players.length > 2
+						| ,
+					if i === players.length - 1
+						|
+						| and
+					|
+					| <a href="#{p.name}">#{p.name}</a>
+				| ?
+
+			form(method="post" action="/rematch/"+game.game_id)
+				p Player roles:
+					if title.is_symmetric
+						br
+						label
+							input(type="radio" name="order" value="keep")
+							| Keep
+						br
+						label
+							input(type="radio" name="order" value="random" checked)
+							| Random
+					else
+						br
+						label
+							input(type="radio" name="order" value="swap" checked)
+							| Swap
+						br
+						label
+							input(type="radio" name="order" value="keep")
+							| Keep
+						br
+						label
+							input(type="radio" name="order" value="random")
+							| Random
+
+				p
+					button(type="submit") Rematch
-- 
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