feat: Run sample script on upload

backend/src/file/file.service.ts

@@ -5,6 +5,7 @@ import { createReadStream, existsSync } from 'fs';
 import { promises as fs } from 'fs';
 import { join } from 'path';
 import { FileData } from './fileData';
+import { exec } from 'child_process';
 
 @Injectable()
 export class FileService {
@@ -31,9 +32,27 @@ export class FileService {
     //     resolve(stdout);
     //   });
     // });
+    this.runSampleScript(filePath);
     return `${filePath}`;
   }
 
+   runSampleScript(filePath: string) {
+    new Promise((resolve, reject) => {
+      // Run the shell script and pass the fileName as an argument
+      exec(`./src/processed/sample.sh sample.jpeg`, (error, stdout, stderr) => {
+        if (error) {
+          console.error(`Error: ${error.message}`);
+          reject(`Error: ${error.message}`);
+        } else if (stderr) {
+          console.error(`Standard Error: ${stderr}`);
+          reject(`Standard Error: ${stderr}`);
+        } else {
+          console.log("Script ran succesfully ");
+        }
+      });
+    });
+  }
+
   getImage(imageName: string, res: Response) {
     const filePath = join(
       process.cwd(),

backend/src/processed/output.json

@@ -1,12 +1,2 @@
 [
-    {
-        "imageName":"sample.jpeg",
-         "downloadUrl":"http://localhost:3000/files/sample-first.jpeg",
-         "detectionRate":60
-    },
-    {
-        "imageName":"sample.jpeg",
-         "downloadUrl":"http://localhost:3000/files/sample-second.jpeg",
-         "detectionRate":80
-    }  
 ]

backend/src/processed/sample.sh

@@ -0,0 +1,55 @@
+#!/bin/python3
+import json
+import sys
+import os
+import random
+
+# Check if correct number of arguments are passed
+if len(sys.argv) != 2:
+    print("Expected command: ./sample.sh <fileName>")
+    sys.exit(1)
+
+# Assign command line argument to variable
+file_name = sys.argv[1]
+
+# Path to the JSON file
+file_path = 'src/processed/output.json'
+
+# Check if output.json exists, if not create a new one with an empty array
+if not os.path.exists(file_path):
+    with open(file_path, 'w') as json_file:
+        json.dump([], json_file)
+
+# Read the existing data from output.json
+with open(file_path, 'r') as json_file:
+    data = json.load(json_file)
+
+# Generate random detection rates between 50 and 100
+detection_rate_first = random.randint(50, 100)
+detection_rate_second = random.randint(50, 100)
+
+# Construct URLs
+base_name = file_name.split('.')[0]
+url_first = f"http://localhost:3000/files/{base_name}-first.jpeg"
+url_second = f"http://localhost:3000/files/{base_name}-second.jpeg"
+
+# Create new entries
+new_entries = [
+    {
+        "fileName": file_name,
+        "downloadUrl": url_first,
+        "detectionRate": detection_rate_first
+    },
+    {
+        "fileName": file_name,
+        "downloadUrl": url_second,
+        "detectionRate": detection_rate_second
+    }
+]
+
+# Append new entries to the existing data
+data.extend(new_entries)
+
+# Write the updated data back to output.json
+with open(file_path, 'w') as json_file:
+    json.dump(data, json_file, indent=4)