FROM golang:1.19-alpine AS builder

# Install git and required dependencies
RUN apk update && apk add --no-cache git

# Set working directory
WORKDIR /app

# Copy go mod and sum files
COPY go.mod go.sum* ./

# Download dependencies
RUN go mod download

# Copy source code
COPY . .

# Build the application with optimizations
RUN CGO_ENABLED=0 GOOS=linux go build -a -installsuffix cgo -ldflags="-s -w" -o monaco-backend .

# Get cloudflared from official image
FROM cloudflare/cloudflared:latest AS cloudflared

# Use a smaller image for the final container
FROM alpine:latest

# Install Docker client
RUN apk update && apk add --no-cache docker-cli

# Create directories for cloudflared
RUN mkdir -p /etc/cloudflared

# Copy cloudflared from official image
COPY --from=cloudflared /usr/local/bin/cloudflared /usr/local/bin/cloudflared

# Copy the certificate file and config
COPY cert.pem /etc/cloudflared/cert.pem
COPY config.json /etc/cloudflared/config.json

# Copy the binary from builder
COPY --from=builder /app/monaco-backend /monaco-backend

# Create startup script inside the container to ensure correct line endings
RUN printf '#!/bin/sh\\n' > /start.sh && \
    printf '# Start the backend\\n' >> /start.sh && \
    printf '/monaco-backend &\\n' >> /start.sh && \
    printf 'BACKEND_PID=$!\\n' >> /start.sh && \
    printf 'echo "Backend started with PID: $BACKEND_PID"\\n\\n' >> /start.sh && \
    printf '# Wait for backend to start\\n' >> /start.sh && \
    printf 'echo "Waiting for backend to initialize..."\\n' >> /start.sh && \
    printf 'sleep 5\\n\\n' >> /start.sh && \
    printf '# Start cloudflared tunnel using config file\\n' >> /start.sh && \
    printf 'echo "Starting Cloudflare tunnel to api.ishikabhoyar.tech..."\\n' >> /start.sh && \
    printf 'cloudflared tunnel --no-autoupdate run --config /etc/cloudflared/config.json\\n\\n' >> /start.sh && \
    printf '# If cloudflared exits, kill the backend too\\n' >> /start.sh && \
    printf 'kill $BACKEND_PID\\n' >> /start.sh && \
    chmod +x /start.sh

# Expose port for local access
EXPOSE 8080

# Run the startup script
ENTRYPOINT ["/start.sh"]