docker-compose.yml

version: "3.9"

services:
  postgres:
    image: postgres:15-alpine
    container_name: sentiment_postgres
    environment:
      POSTGRES_USER: ${POSTGRES_USER:-sentiment_user}
      POSTGRES_PASSWORD: ${POSTGRES_PASSWORD:-sentiment_password}
      POSTGRES_DB: ${POSTGRES_DB:-sentiment_db}
    ports:
      - "5432:5432"
    volumes:
      - pgdata:/var/lib/postgresql/data
      # runs your init SQL/scripts on first boot
      - ./postgresql:/docker-entrypoint-initdb.d:ro
    healthcheck:
      test: ["CMD-SHELL", "pg_isready -U $$POSTGRES_USER -d $$POSTGRES_DB"]
      interval: 5s
      timeout: 3s
      retries: 20
    restart: unless-stopped

  backend:
    build:
      context: ./backend/api
    container_name: sentiment_api
    ports:
      - "8000:8000"
    depends_on:
      postgres:
        condition: service_healthy
    volumes:
      # hot-reload dev style (optional)
      - ./backend/api:/usr/src/app
      # persist artifacts to host
      - ./backend/reports:/usr/src/app/reports
    environment:
      # DB (only matters if your backend uses it)
      DB_USER: ${POSTGRES_USER:-sentiment_user}
      DB_PASSWORD: ${POSTGRES_PASSWORD:-sentiment_password}
      DB_HOST: postgres
      DB_PORT: "5432"
      DB_NAME: ${POSTGRES_DB:-sentiment_db}

      # Common paths (use these in backend/main.R if you wired env vars)
      MODEL_RDS: /usr/src/app/model.rds
      REPORTS_DIR: /usr/src/app/reports
    restart: unless-stopped

  frontend:
    build:
      context: ./frontend
    container_name: sentiment_dashboard
    ports:
      - "8501:8501"
    depends_on:
      backend:
        condition: service_started
      postgres:
        condition: service_healthy
    volumes:
      - ./frontend:/app
      - ./data:/app/data:ro
      - ./backend/api:/app/backend/api:ro
      - ./backend/reports:/app/backend/reports:ro
    environment:
      SHINY_HOST: "0.0.0.0"
      SHINY_PORT: "8501"

      # If your Shiny app reads env vars for paths, point them to container paths:
      SENTIMENT_DATA_RDS: /app/data/sst_treebank.rds
      SENTIMENT_MODEL_RDS: /app/backend/api/model.rds

      # Optional if your UI ever calls the service by URL:
      SENTIMENT_API_BASE: http://backend:8000
    restart: unless-stopped

volumes:
  pgdata: