Forgot Password Workflow (Frontend + Backend)

README.md

@@ -133,6 +133,7 @@ Note: Backend and frontend must be running simultaneously for proper functionali
 ## 🌟 Core Features
 
 - 🌾 Crop Recommendation
+- 🌿 Fertilizer Recommendation
 - 📉 Yield Prediction
 - 🔬 Disease Detection
 - � **AI Chatbot** - Platform guidance & agriculture support
@@ -226,6 +227,7 @@ AGRITECH/
 │       ├── 📁 css/             # Stylesheets
 │       └── 📁 js/              # Client-side scripts
 ├── 📁 Crop Recommendation/   # 🌾 Crop recommendation module
+├── 📁 Fertiliser Recommendation System/   # 🌿 Fertilizer recommendation ML module
 ├── 📁 Disease Prediction/     # 🔬 Disease detection module
 ├── 📁 Crop Yield Prediction/   # 📊 Yield forecasting module
 ├── 📁 Community/               # 💬 community/forum backend

backend/api/v1/auth.py

@@ -183,3 +183,13 @@ def reset_password(token):
         return jsonify({'status': 'success', 'message': message}), 200
     AuditService.log_action(action="PASSWORD_RESET_FAILED", risk_level='MEDIUM', meta_data={"error": message})
     return jsonify({'status': 'error', 'message': message}), 400
+
+@auth_bp.route('/reset-password/<token>/validate', methods=['GET'])
+def validate_reset_password_token(token):
+    """Validate a password reset token before showing the reset form."""
+    success, message = AuthService.validate_reset_token(token)
+    status_code = 200 if success else 400
+    return jsonify({
+        'status': 'success' if success else 'error',
+        'message': message
+    }), status_code

backend/models/__init__.py

@@ -3,6 +3,7 @@
 """
 
 from .user import User, UserRole
+from .token import Token
 from .loan_request import LoanRequest
 from .prediction_history import PredictionHistory
 from .misc import (
@@ -139,6 +140,7 @@
     # Core
     "User",
     "UserRole",
+    "Token",
     "LoanRequest",
     "PredictionHistory",
     "Notification",

backend/models/token.py

@@ -0,0 +1,31 @@
+"""
+Persistent auth token model for verification and password reset flows.
+"""
+
+from datetime import datetime
+
+from backend.extensions import db
+
+
+class Token(db.Model):
+    __tablename__ = 'tokens'
+
+    id = db.Column(db.Integer, primary_key=True)
+    user_id = db.Column(db.Integer, db.ForeignKey('users.id'), nullable=False, index=True)
+    token = db.Column(db.String(128), unique=True, nullable=False, index=True)
+    type = db.Column(db.String(32), nullable=False, index=True)
+    expires_at = db.Column(db.DateTime, nullable=False)
+    created_at = db.Column(db.DateTime, default=datetime.utcnow)
+
+    def is_expired(self):
+        return self.expires_at <= datetime.utcnow()
+
+    def to_dict(self):
+        return {
+            'id': self.id,
+            'user_id': self.user_id,
+            'type': self.type,
+            'expires_at': self.expires_at.isoformat() if self.expires_at else None,
+            'created_at': self.created_at.isoformat() if self.created_at else None,
+            'is_expired': self.is_expired(),
+        }

backend/services/auth_service.py

@@ -1,6 +1,5 @@
 import secrets
 from datetime import datetime, timedelta
-from flask import current_app, url_for
 from flask_mail import Message
 from backend.extensions import db, mail
 from backend.models import User, Token
@@ -49,7 +48,8 @@ def send_verification_email(user):
     def send_password_reset_email(user):
         """Send a password reset link to the user."""
         token = AuthService.generate_token(user.id, 'reset', hours=1)
-        reset_url = f"http://localhost:5000/reset-password/{token}"
+        frontend_base = current_app.config.get('FRONTEND_BASE_URL', 'http://localhost:5000')
+        reset_url = f"{frontend_base}/reset-password/{token}"
 
         msg = Message(
             "AgriTech Password Reset",
@@ -97,3 +97,16 @@ def reset_password(token_value, new_password):
             return True, "Password reset successfully"
 
         return False, "User not found"
+
+            @staticmethod
+            def validate_reset_token(token_value):
+                """Check whether a reset token exists and is still valid."""
+                token_record = Token.query.filter_by(token=token_value, type='reset').first()
+
+                if not token_record:
+                    return False, "Invalid token"
+
+                if token_record.is_expired():
+                    return False, "Token has expired"
+
+                return True, "Token is valid"

disease.js

@@ -255,6 +255,8 @@ const loading = document.getElementById("loading");
 const resultsDiv = document.getElementById("results");
 
 let selectedFile = null;
+let uploadInProgress = false;
+let fileSelectionToken = 0;
 
 // File upload handling
 uploadArea.addEventListener("click", () => fileInput.click());
@@ -308,7 +310,7 @@ fileInput.addEventListener("change", (e) => {
 
 // Analysis function
 analyzeBtn.addEventListener("click", async () => {
-  if (!selectedFile) return;
+  if (uploadInProgress || !selectedFile) return;
 
   loading.style.display = "block";
   resultsDiv.innerHTML = "";
@@ -470,40 +472,59 @@ function validateImage(file) {
   return true;
 }
 
+function readPreviewDataUrl(file) {
+  return new Promise((resolve, reject) => {
+    const reader = new FileReader();
+
+    reader.onload = (event) => resolve(event.target.result);
+    reader.onerror = () => reject(new Error("Error loading image preview."));
+    reader.readAsDataURL(file);
+  });
+}
+
 // Enhanced file handling with validation
-function handleFileSelect(file) {
+async function handleFileSelect(file) {
+  const currentSelectionToken = ++fileSelectionToken;
+
   try {
     validateImage(file);
-    selectedFile = file;
+    uploadInProgress = true;
+    selectedFile = null;
+    analyzeBtn.disabled = true;
 
     previewContainer.innerHTML = '<div class="spinner"></div>';
 
-    const reader = new FileReader();
-    reader.onload = (e) => {
-      previewContainer.innerHTML = `<img src="${e.target.result}" alt="Plant preview" class="preview-image">`;
-      analyzeBtn.disabled = false;
-      resultsDiv.innerHTML = "";
-      document.getElementById("downloadPdfBtn").style.display = "none";
+    const previewDataUrl = await readPreviewDataUrl(file);
 
-      document.getElementById("modelStatus").innerHTML =
-        "🔍 Image loaded - Ready for analysis";
-      document.getElementById("modelStatus").className =
-        "status-indicator status-warning";
-    };
+    if (currentSelectionToken !== fileSelectionToken) {
+      return;
+    }
+
+    selectedFile = file;
+    previewContainer.innerHTML = `<img src="${previewDataUrl}" alt="Plant preview" class="preview-image">`;
+    resultsDiv.innerHTML = "";
+    document.getElementById("downloadPdfBtn").style.display = "none";
 
-    reader.onerror = () => {
-      previewContainer.innerHTML =
-        '<div class="no-results">❌ Error loading image</div>';
-      selectedFile = null;
-    };
+    document.getElementById("modelStatus").innerHTML =
+      "🔍 Image loaded - Ready for analysis";
+    document.getElementById("modelStatus").className =
+      "status-indicator status-warning";
 
-    reader.readAsDataURL(file);
+    analyzeBtn.disabled = false;
   } catch (error) {
+    if (currentSelectionToken !== fileSelectionToken) {
+      return;
+    }
+
     alert(error.message);
     previewContainer.innerHTML =
       '<div class="no-results">📷 Upload an image to get started</div>';
     selectedFile = null;
     analyzeBtn.disabled = true;
+  } finally {
+    if (currentSelectionToken === fileSelectionToken) {
+      uploadInProgress = false;
+    }
   }
 }
 

domain/README.md

@@ -9,6 +9,8 @@ This directory defines shared domain contracts used across AgriTech.
 
 ## Current Schemas
 - Crop
+- FertilizerRecommendationInput
+- FertilizerRecommendation
 - GrowthStage
 - SoilData
 - PredictionResult

domain/fertilizer.schema.js

@@ -0,0 +1,79 @@
+/**
+ * Fertilizer recommendation schema
+ */
+
+export const FertilizerRecommendationInputSchema = {
+  $id: "FertilizerRecommendationInput",
+  type: "object",
+  required: [
+    "temperature",
+    "humidity",
+    "moisture",
+    "soilType",
+    "cropType",
+    "nitrogen",
+    "phosphorous",
+    "potassium"
+  ],
+  additionalProperties: false,
+  properties: {
+    temperature: {
+      type: "number",
+      description: "Ambient temperature in degrees Celsius"
+    },
+    humidity: {
+      type: "number",
+      description: "Relative humidity percentage"
+    },
+    moisture: {
+      type: "number",
+      description: "Soil moisture percentage"
+    },
+    soilType: {
+      type: "string",
+      description: "Categorical soil type"
+    },
+    cropType: {
+      type: "string",
+      description: "Categorical crop type"
+    },
+    nitrogen: {
+      type: "number",
+      description: "Nitrogen content"
+    },
+    phosphorous: {
+      type: "number",
+      description: "Phosphorous content"
+    },
+    potassium: {
+      type: "number",
+      description: "Potassium content"
+    }
+  }
+};
+
+export const FertilizerRecommendationSchema = {
+  $id: "FertilizerRecommendation",
+  type: "object",
+  required: ["fertilizerName", "confidence", "inputs"],
+  additionalProperties: false,
+  properties: {
+    fertilizerName: {
+      type: "string",
+      description: "Recommended fertilizer label"
+    },
+    confidence: {
+      type: "number",
+      description: "Prediction confidence score (0-1)"
+    },
+    inputs: FertilizerRecommendationInputSchema,
+    modelVersion: {
+      type: "string",
+      description: "Version of the fertilizer recommendation model"
+    },
+    createdAt: {
+      type: "string",
+      description: "ISO timestamp when the recommendation was generated"
+    }
+  }
+};

domain/index.js

@@ -1,17 +1,22 @@
 import { CropSchema } from "./crop.schema.js";
+import { FertilizerRecommendationInputSchema, FertilizerRecommendationSchema } from "./fertilizer.schema.js";
 import { GrowthStageSchema } from "./growthStage.schema.js";
 import { PredictionResultSchema } from "./prediction.schema.js";
 import { SoilDataSchema } from "./soil.schema.js";
 
 export {
   CropSchema,
+  FertilizerRecommendationInputSchema,
+  FertilizerRecommendationSchema,
   GrowthStageSchema,
   PredictionResultSchema,
   SoilDataSchema
 };
 
 export const DomainSchemas = {
   Crop: CropSchema,
+  FertilizerRecommendationInput: FertilizerRecommendationInputSchema,
+  FertilizerRecommendation: FertilizerRecommendationSchema,
   GrowthStage: GrowthStageSchema,
   PredictionResult: PredictionResultSchema,
   SoilData: SoilDataSchema

domain/validate.js

@@ -1,12 +1,16 @@
 import {
   CropSchema,
+  FertilizerRecommendationInputSchema,
+  FertilizerRecommendationSchema,
   GrowthStageSchema,
   PredictionResultSchema,
   SoilDataSchema
 } from "./index.js";
 
 const schemaMap = {
   Crop: CropSchema,
+  FertilizerRecommendationInput: FertilizerRecommendationInputSchema,
+  FertilizerRecommendation: FertilizerRecommendationSchema,
   GrowthStage: GrowthStageSchema,
   PredictionResult: PredictionResultSchema,
   SoilData: SoilDataSchema