From 41f8caf8029dbd0097f056f24a097ba057122ed7 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?S=C3=A9bastien=20Rivi=C3=A8re?=
 <sebastien.riviere@telecom-paris.fr>
Date: Mon, 9 Jun 2025 01:35:39 +0200
Subject: [PATCH] Logs de la partie

---
 traque-back/Dockerfile    |  2 ++
 traque-back/game.js       |  5 ++-
 traque-back/index.js      |  2 ++
 traque-back/trajectory.js | 65 +++++++++++++++++++++++++++++++++++++++
 4 files changed, 73 insertions(+), 1 deletion(-)
 create mode 100644 traque-back/trajectory.js

diff --git a/traque-back/Dockerfile b/traque-back/Dockerfile
index 535f9f1..ca5e449 100644
--- a/traque-back/Dockerfile
+++ b/traque-back/Dockerfile
@@ -15,6 +15,8 @@ COPY . .
 
 RUN if [ ! -d uploads ]; then mkdir uploads; fi
 
+RUN if [ ! -d trajectories ]; then mkdir trajectories; fi
+
 EXPOSE 3001
 
 # Start the application
diff --git a/traque-back/game.js b/traque-back/game.js
index 6fe5b74..5f54088 100644
--- a/traque-back/game.js
+++ b/traque-back/game.js
@@ -9,6 +9,7 @@ import penaltyController from "./penalty_controller.js";
 import zoneManager from "./zone_manager.js";
 
 import { getDistanceFromLatLon } from "./map_utils.js";
+import { writePosition, writeCapture, writeSeePosition } from "./trajectory.js";
 
 /**
  * The possible states of the game
@@ -237,6 +238,7 @@ export default {
         if (location == null) {
             return false;
         }
+        writePosition(Date.now(), teamId, location[0], location[1]);
         team.currentLocation = location;
         //Update the team ready status if they are in their starting area
         if (this.state == GameState.PLACEMENT && team.startingArea && team.startingArea && location) {
@@ -274,7 +276,7 @@ export default {
         if (team.currentLocation == null) {
             return false;
         }
-
+        writeSeePosition(Date.now(), teamId, team.chasing);
         team.locationSendDeadline = Number(new Date()) + penaltyController.settings.allowedTimeBetweenPositionUpdate * 60 * 1000;
         team.lastSentLocation = team.currentLocation;
         if (this.getTeam(team.chasing) != null) {
@@ -309,6 +311,7 @@ export default {
     requestCapture(teamId, captureCode) {
         let enemyTeam = this.getTeam(this.getTeam(teamId).chasing)
         if (enemyTeam && enemyTeam.captureCode == captureCode) {
+            writeCapture(Date.now(), teamId, enemyTeam.id);
             this.capture(enemyTeam.id);
             this.updateTeamChasing();
             return true;
diff --git a/traque-back/index.js b/traque-back/index.js
index 358435d..189e09c 100644
--- a/traque-back/index.js
+++ b/traque-back/index.js
@@ -7,6 +7,7 @@ import { readFileSync } from "fs";
 import { initAdminSocketHandler } from "./admin_socket.js";
 import { initTeamSocket } from "./team_socket.js";
 import { initPhotoUpload } from "./photo.js";
+import { initTrajectories } from "./trajectory.js";
 //extract admin password from .env file
 config();
 const HOST = process.env.HOST;
@@ -33,3 +34,4 @@ export const io = new Server(httpServer, {
 initAdminSocketHandler();
 initTeamSocket();
 initPhotoUpload();
+initTrajectories();
diff --git a/traque-back/trajectory.js b/traque-back/trajectory.js
new file mode 100644
index 0000000..6aa0ab9
--- /dev/null
+++ b/traque-back/trajectory.js
@@ -0,0 +1,65 @@
+import fs from "fs";
+import path from "path";
+const UPLOAD_DIR = "trajectories";
+const EXTENSION = "txt";
+
+// Useful functions
+
+function teamIDToPath(teamID) {
+    return path.join(UPLOAD_DIR, teamID + "." + EXTENSION);
+}
+
+function dataToLine(...data) {
+    return data.join(',');
+}
+
+const errorFile = (err) => {
+    if (err) console.error("Error appending to file:", err);
+};
+
+function addLineToFile(teamID, line) {
+    // Insert the line in the file of teamID depending on the date (lines are sorted by date)
+    if (!fs.existsSync(teamIDToPath(teamID))) {
+        fs.writeFile(teamIDToPath(teamID), line + '\n', errorFile);
+    } else {
+        fs.readFile(teamIDToPath(teamID), 'utf8', (err, data) => {
+            if (err) {
+                errorFile(err);
+                return;
+            }
+            let lines = data.trim().split('\n');
+            const newDate = parseInt(line.split(',')[0], 10);
+            let insertIndex = lines.length;
+            for (let i = lines.length - 1; i >= 0; i--) {
+                const date = parseInt(lines[i].split(',')[0], 10);
+                if (date <= newDate) {
+                    insertIndex = i + 1;
+                    break;
+                }
+            }
+            lines.splice(insertIndex, 0, line);
+            fs.writeFile(teamIDToPath(teamID), lines.join('\n') + '\n', errorFile);
+        });
+    }
+}
+
+// Export functions
+
+export async function initTrajectories() {
+    const files = fs.readdirSync(UPLOAD_DIR);
+    for (const file of files) fs.unlinkSync(path.join(UPLOAD_DIR, file));
+}
+
+export function writePosition(date, teamID, lon, lat) {
+    addLineToFile(teamID, dataToLine(date, "position", lon, lat));
+}
+
+export function writeCapture(date, teamID, capturedTeamID) {
+    addLineToFile(teamID, dataToLine(date, "capture", capturedTeamID));
+    addLineToFile(capturedTeamID, dataToLine(date, "captured", teamID));
+}
+
+export function writeSeePosition(date, teamID, seenTeamID) {
+    addLineToFile(teamID, dataToLine(date, "see"));
+    addLineToFile(seenTeamID, dataToLine(date, "seen"));
+}