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-# DevOps-CA1_2023_27
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+# DevOps-CA1_2023_27
+
+# DevOps CA1 - Open Source Contribution Report
+
+## 👥 Group Information (Group 1)
+- **Class / Division**: DevOps TH1
+- **Target Open Source Project**: [bluewave-labs/Checkmate](https://github.com/bluewave-labs/Checkmate)
+- **Target Issue**: [#2679 - Maintenance Mode for Status Pages & Monitors](https://github.com/bluewave-labs/Checkmate/issues/2679)
+- **Checkmate PR**: [PR #3833](https://github.com/bluewave-labs/Checkmate/pull/3833)
+
+### Group Members
+| Roll No / PRN | Name | Class / Batch |
+|---|---|---|
+| **23070122100** | Harsh Ledwani | TH1 |
+| **23070122113** | Shivam Kapure | TH1 |
+| **23070122114** | Kashyup Gaud | TH1 |
+| **23070122180** | Rishi Modi | TH1 |
+
+---
+
+## 🔍 What is Checkmate?
+**Checkmate** is a modern, self-hosted, open-source infrastructure monitoring and public status page platform. It provides:
+- **Multi-protocol Uptime Monitoring**: HTTP(S), TCP Port, Ping (ICMP), DNS, gRPC, WebSocket, Docker containers, and Game servers.
+- **Customizable Public & Private Status Pages**: Multi-theme status pages (`Modern`, `Refined`, `Bold`, `Editorial`, `Minimal`) with customizable domains, custom CSS, and subscriber notifications.
+- **Incident & Maintenance Management**: Scheduled maintenance windows, incident response workflows, and multi-channel alerting (Slack, Discord, Email, PagerDuty, Webhooks, Telegram, Twilio, etc.).
+
+---
+
+## 🎯 Contribution Overview & Problem Statement
+In Checkmate, when services or monitors were placed into scheduled maintenance windows, public status pages and monitor detail pages did not reflect this status to external visitors and operations teams.
+
+Our group implemented end-to-end **Maintenance Mode Visibility** across both frontend status page themes and backend API service layers:
+1. Displays an active **`MaintenanceBanner`** on public status pages detailing which monitors are in maintenance and the estimated completion time (ETA).
+2. Displays an active maintenance warning banner on the individual **Monitor Details** view (`Uptime/Details`).
+3. Backend service logic calculates exact expiration times for both one-time and recurring (cron/interval) maintenance schedules.
+
+---
+
+## 🚀 Key Deliverables & Technical Implementation
+
+### 1. Frontend Architecture (`client`)
+- **`MaintenanceBanner.tsx`**: Built a modular, responsive banner rendered seamlessly across all 5 status page themes (`Modern`, `Refined`, `Bold`, `Editorial`, `Minimal`).
+- **Real-Time Duration & Monitor Mapping**: Dynamically formats human-readable remaining time (e.g. `Ends in ~45 minutes`) and lists affected monitor names.
+- **Monitor Detail Page (`Uptime/Details`)**: Injected an active maintenance warning card when the viewed monitor is under an ongoing maintenance window.
+- **Internationalization (`i18n`)**: Added localized translation keys to `client/src/locales/en.json`.
+
+### 2. Backend Services (`server`)
+- **`maintenanceWindow.ts`**: Implemented `getActiveWindowEnd()` utility to compute window termination timestamps across recurring and one-time maintenance windows.
+- **`StatusPageService`**: Updated `getPublicStatusPagePayload` to query `IMaintenanceWindowsRepository` for active windows covering status page monitors.
+- **Dependency Injection**: Injected `IMaintenanceWindowsRepository` into `StatusPageService` via `server/src/config/services.api.ts`.
+
+### 3. Testing & Type Safety
+- Added unit tests for `maintenanceWindow.ts` and `statusPageService.test.ts`.
+- Verified system integrity with all **67 unit test suites (1,262 tests) passing**.
+
+---
+
+## 📁 Key Files Modified / Added
+```
+group-1/Checkmate/
+├── client/
+│   ├── src/Pages/StatusPage/Status/themes/shared/MaintenanceBanner.tsx  # [NEW] Maintenance Banner component
+│   ├── src/Pages/StatusPage/Status/themes/shared/BaseStatusPage.tsx      # Integrated banner in status pages
+│   ├── src/Pages/StatusPage/Status/index.tsx                             # Props mapping
+│   ├── src/Pages/Uptime/Details/index.tsx                                # Monitor detail page alert
+│   ├── src/Types/StatusPage.ts                                           # TypeScript interfaces
+│   └── src/locales/en.json                                               # i18n localization tokens
+└── server/
+    ├── src/config/services.api.ts                                        # Repo dependency injection
+    ├── src/domain/status-pages/status-page.service.ts                    # Payload maintenance querying
+    ├── src/domain/status-pages/status-page.type.ts                       # Backend type definitions
+    ├── src/utils/maintenanceWindow.ts                                    # End-time calculation logic
+    ├── test/unit/services/statusPageService.test.ts                      # Unit tests
+    └── test/unit/utils/maintenanceWindow.test.ts                         # Unit tests
+```
+
+---
+
+## 🛠️ Prerequisites & Dependencies
+
+### System Requirements
+- **Node.js**: `v20.x` or later
+- **npm**: `v10.x` or later
+- **MongoDB**: `v6.x` or later (Local or MongoDB Atlas)
+- **Redis**: `v7.x` or later (Local or Redis Cloud)
+- **Docker & Docker Compose** *(Optional, for containerized run)*
+
+---
+
+## 🏃 How to Run Locally
+
+### 1. Start Database & Redis (Docker)
+If you have Docker installed, start MongoDB and Redis with a single command:
+```bash
+docker run -d --name checkmate-mongo -p 27017:27017 mongo:7
+docker run -d --name checkmate-redis -p 6379:6379 redis:7-alpine
+```
+
+### 2. Backend Setup (`server`)
+```bash
+cd server
+
+# Install dependencies
+npm install
+
+# Configure environment variables
+cp .env.example .env
+
+# Run development server
+npm run dev
+```
+Backend API will start on `http://localhost:3000`.
+
+### 3. Frontend Setup (`client`)
+```bash
+cd client
+
+# Install dependencies
+npm install
+
+# Configure environment variables
+cp .env.example .env
+
+# Run development server
+npm run dev
+```
+Frontend UI will start on `http://localhost:5173`.
+
+---
+
+## 🧪 Running Tests & Quality Checks
+
+### Backend Unit Tests
+```bash
+cd server
+npm run test:unit
+```
+
+### TypeScript Validation & Linting
+```bash
+# Server
+cd server
+npx tsc --noEmit
+npm run lint
+
+# Client
+cd client
+npm run lint
+npm run build
+```