SaiKrishna Actual Cost Breakdown Donut Chart Back End

[saikrishnaraoyadagiri]

Description

Backend Requirements
API Endpoint:

GET /api/projects/:id/planned-cost-breakdown

Data Structure:
{
plumbing: 5500,
electrical: 4800,
structural: 7600,
mechanical: 6300
}

Database Schema:
{
projectId: ObjectId,
category: String, // Plumbing / Electrical / Structural / Mechanical
plannedCost: Number
}
Data Retrieval Logic:

Query by projectId.
Group planned costs by category.
Sum up planned costs per category.
Return structured breakdown.

Dependencies:

express for API routing.
mongoose for database interaction.

Related PRS (if any):

To test this backend PR you need to checkout the #4373 frontend PR.
…

Main changes explained:

Updated routes.js — Added actualCostRouter registration
Created actualCost.js — Mongoose model for Actual Cost with projectId, date, category, cost, and timestamps
Created actualCostController.js -Controller with getActualCostBreakdown for cost breakdown by category and percentage changes
Created actualCostRouter.js — Router for GET /api/projects/:id/actual-cost-breakdown endpoint
…

How to test:

1. check into current branch
2. do npm install and ... to run this PR locally
3. Clear site data/cache
4. log as admin user
5. Go to http://localhost:4500/api/projects/:ProjectId/actual-cost-breakdown (replace the project id with the actual project id). I have set up the data for this project id 68747d37c71d9f67ac207eef
   http://localhost:4500/api/projects/663fe67571353a40c423d777/actual-cost-breakdown(this is just an example if data is not found for this project, setup the data for any project and check)
6. You can setup the data for other project ids and can test. you need to setup the data in this collection " actualcosts"
7. Each type can have multiple entries with different costs in the same project and when we hit the api we should get the combined costs

Screenshots or videos of changes:

[Anusha-Gali]

Hi Sai Krishna,

I have reviewed your PR locally and the API response is as per requirement.

[HemanthNidamanuru]

Hi Sai Krishna,

Tested the backend APIs for Actual Cost Breakdown and verified correct data retrieval, date handling logic, and responses.

[one-community]

Thank you all, merging!