Fix/graphql filtered count and seed script

[lukesmmr]

Summary by CodeRabbit

• New Features

  • Added seed script to easily populate the database with 17 sample disaster records for testing.

• Bug Fixes

  • Disaster count calculations now correctly respect filtering by status, type, and date range.

• Tests

  • Added comprehensive GraphQL API tests covering filtering, pagination, and combined filter scenarios.

• Documentation

  • Added seeding setup instructions and database reset guidance to README.

[coderabbitai]

📝 Walkthrough

Walkthrough

Added seeding infrastructure to populate the database with sample disaster data via a new npm script, enhanced the disasters GraphQL query to respect filters when calculating totals and pagination, and introduced comprehensive tests validating filtering and pagination behavior.

Changes

Cohort / File(s)	Summary
Seeding Infrastructure scripts/seed.ts, package.json	New seed script that POSTs 17 predefined disasters to the bulk API endpoint, with configurable base URL support. Added npm run seed command for easy execution.
Service Layer services/disaster.service.ts	Updated countDisasters function to accept an optional DisasterFilter parameter and build dynamic WHERE clauses based on type, status, dateFrom, and dateTo fields.
GraphQL Query graphql/resolvers.ts	Modified disasters query to pass the constructed filter to countDisasters, ensuring total and totalPages reflect filtered results rather than full dataset counts.
Testing graphql/graphql.test.ts	Added 120 lines of comprehensive test coverage for status-based filtering, type-based filtering, pagination interactions, and combined filter scenarios with data seeding and assertion validation.
Documentation README.md	Added "Seeding Sample Data" section describing the seed script, three invocation variants (docker, host, custom URL), additive behavior, and database reset instructions.

Estimated code review effort

🎯 3 (Moderate) | ⏱️ ~25 minutes

Poem

🐰 Seeds are sown in the database ground,
Filtered queries spin round and round,
Tests now verify each sorted row,
Disasters counted—swift they grow!
A burrow of code, refined and sound! 🌱

🚥 Pre-merge checks | ✅ 2 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (2 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly identifies the two main changes: fixing the GraphQL filtered count issue and adding a seed script.

_{✏️ Tip: You can configure your own custom pre-merge checks in the settings.}

✨ Finishing touches

• 📝 Generate docstrings

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch fix/graphql-filtered-count-and-seed-script

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No actionable comments were generated in the recent review. 🎉

🧹 Recent nitpick comments

services/disaster.service.ts (1)

91-117: Duplicated filter-building logic with getAllDisasters.

The WHERE-clause construction (lines 92–111) is nearly identical to lines 46–69 in getAllDisasters. Consider extracting a shared helper, e.g.:

function buildFilterClause(filter: DisasterFilter, startIndex = 1) {
  const conditions: string[] = [];
  const values: unknown[] = [];
  let paramIndex = startIndex;
  if (filter.type) { conditions.push(`type = $${paramIndex++}`); values.push(filter.type); }
  if (filter.status) { conditions.push(`status = $${paramIndex++}`); values.push(filter.status); }
  if (filter.dateFrom) { conditions.push(`date >= $${paramIndex++}::timestamp`); values.push(filter.dateFrom); }
  if (filter.dateTo) { conditions.push(`date <= $${paramIndex++}::timestamp`); values.push(filter.dateTo); }
  const whereClause = conditions.length > 0 ? `WHERE ${conditions.join(' AND ')}` : '';
  return { whereClause, values, paramIndex };
}

This eliminates the duplication and ensures both functions stay in sync when new filter fields are added.

scripts/seed.ts (1)

157-182: Add a top-level catch to main() for network errors.

If the server is unreachable, fetch throws a TypeError and the process exits with an unhandled rejection and a cryptic message. A catch on main() would give a friendlier diagnostic:

Suggested fix

-main();
+main().catch((err) => {
+  console.error('Seed failed:', err.message ?? err);
+  process.exit(1);
+});

---

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[lukesmmr]

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