Add PostgreSQL support for Prisma storage

[jaypatrick]

Summary

• Add PostgreSQL as the default database provider for Prisma ORM
• Configure Docker Compose with PostgreSQL 17 Alpine service and health checks
• Add optional pg driver adapter support for connection pooling in PrismaStorageAdapter

Changes

• Prisma Schema: Updated to use PostgreSQL as default provider
• Dependencies: Added pg driver package for PostgreSQL connections
• Docker Compose: Added PostgreSQL service with persistent volume and health checks
• PrismaStorageAdapter: Added support for @prisma/adapter-pg with connection pooling (opt-in via USE_PG_ADAPTER=true)
• Migrations: Created PostgreSQL-specific migration files in migrations/postgresql/
• Tasks: Added db:migrate:deploy, db:migrate:reset, db:seed commands

Test plan

• Start PostgreSQL with docker-compose up -d postgres
• Run deno task db:push to sync schema
• Run deno task db:generate to generate Prisma client
• Run deno task dev and verify database connectivity
• Optionally test with USE_PG_ADAPTER=true for connection pooling

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Status	Name	Latest Commit	Updated (UTC)
✅ Deployment successful! View logs	adblock-compiler	25443cb	Feb 02 2026, 07:09 PM

[jaypatrick]

@copilot fix the lint error

[Copilot]

@jaypatrick I've opened a new pull request, #246, to work on those changes. Once the pull request is ready, I'll request review from you.

[Copilot]

Pull request overview

This PR switches the Prisma-based storage to use PostgreSQL as the default backend, adds a Dockerized Postgres setup, and introduces optional connection pooling via @prisma/adapter-pg and pg.

Changes:

• Updated Prisma storage configuration and schema to treat PostgreSQL as the default provider and adjusted defaults for DATABASE_URL.
• Added a PostgreSQL 17 Alpine service in docker-compose.yml plus corresponding environment examples and Prisma tasks (db:migrate:*, db:seed).
• Extended PrismaStorageAdapter to optionally use the @prisma/adapter-pg + pg pool when USE_PG_ADAPTER=true, and added Postgres-specific SQL migrations under migrations/postgresql/.

Reviewed changes

Copilot reviewed 8 out of 8 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
src/storage/PrismaStorageAdapter.ts	Adds a PostgreSQL-focused default DATABASE_URL, detects Postgres URLs, and conditionally wires up the pg pool + @prisma/adapter-pg adapter when USE_PG_ADAPTER=true, falling back to the standard PrismaClient and improving logging (including masking credentials).
prisma/schema.prisma	Switches the datasource provider to postgresql and updates header comments and usage examples to make PostgreSQL the documented default while still supporting SQLite and MongoDB via provider changes.
prisma/prisma.config.ts	Configures Prisma to default its datasource URL to a local PostgreSQL instance, keeping the value overridable via process.env.DATABASE_URL.
migrations/postgresql/0001_init.sql	Defines PostgreSQL DDL for the main storage tables (storage_entries, filter_cache, compilation_metadata, source_snapshots, source_health, source_attempts) aligned with the Prisma models and using TIMESTAMP WITH TIME ZONE and appropriate indexes.
migrations/postgresql/0002_deployment_history.sql	Adds PostgreSQL DDL for deployment_history and deployment_counter tables mirroring the existing D1/SQLite structures, enabling deployment tracking on Postgres.
docker-compose.yml	Introduces a postgres service (PostgreSQL 17-alpine) with health checks and a persistent volume, wires the adblock-compiler service to it via DATABASE_URL, and adds an explicit dependency on a healthy Postgres container.
deno.json	Adds Prisma-related tasks for migrating and seeding (db:migrate:deploy, db:migrate:reset, db:seed) and an npm import mapping for the pg driver to support the new adapter.
.env.example	Updates the default DATABASE_URL and related comments to point to PostgreSQL (local and Docker), and introduces POSTGRES_USER, POSTGRES_PASSWORD, and POSTGRES_DB variables for the docker-compose setup.

[Copilot]

The JSDoc a few lines below still describes this adapter as "Default storage backend using Prisma ORM with SQLite", but the default provider and DEFAULT_DATABASE_URL here are now PostgreSQL. Please update that class-level description to call out PostgreSQL as the default (and adjust the supported-databases wording if needed) so the documentation matches the actual behavior.