# 1. Build Go Backend
FROM golang:1.21-alpine AS builder
WORKDIR /app
# TODO: go mod init & go mod download will be added later when we create the go backend code
# COPY backend/go.mod backend/go.sum ./backend/
# RUN cd backend && go mod download
COPY backend/ ./backend/
# We'll build the go binary inside the backend dir and put it in /app/main
RUN cd backend && CGO_ENABLED=1 go build -o /app/main main.go

# 2. Final Minimal Image (Python + Go binary + Frontend)
FROM python:3.10-slim

# Install system dependencies (ffmpeg is required for yt-dlp)
RUN apt-get update && apt-get install -y \
    ffmpeg \
    ca-certificates \
    && rm -rf /var/lib/apt/lists/*

WORKDIR /app

# Install Python dependencies for worker
COPY worker/requirements.txt ./worker/
RUN pip install --no-cache-dir -r worker/requirements.txt

# Copy Go binary from builder
COPY --from=builder /app/main ./main

# Copy worker script
COPY worker/ ./worker/

# Copy frontend
COPY frontend/ ./frontend/

# Ensure directories exist
RUN mkdir -p db downloads

# Expose Go server port
EXPOSE 3000

# Run the Go server command (which will also call the yt-dlp python script when needed)
CMD ["./main"]