# Multi-stage build

# Stage 1: Build the Go executable
FROM golang:1.21-bookworm as go-builder

WORKDIR /root
COPY go.mod go.sum ./
RUN go mod download

COPY cmd/ ./cmd/
COPY internal/ ./internal/

RUN CGO_ENABLED=0 GOOS=linux go build -a -installsuffix cgo -o bin/app cmd/app/main.go

# Stage 2: Setup Node.js environment with mermaid CLI and Chrome
FROM node:20-bookworm-slim

# Install system dependencies for Chrome/Puppeteer
ENV DEBIAN_FRONTEND=noninteractive
RUN apt-get update && apt-get install -y \
    ca-certificates \
    fonts-liberation \
    libappindicator3-1 \
    libasound2 \
    libatk-bridge2.0-0 \
    libatk1.0-0 \
    libc6 \
    libcairo2 \
    libcups2 \
    libdbus-1-3 \
    libexpat1 \
    libfontconfig1 \
    libgbm1 \
    libgcc1 \
    libglib2.0-0 \
    libgtk-3-0 \
    libnspr4 \
    libnss3 \
    libpango-1.0-0 \
    libpangocairo-1.0-0 \
    libstdc++6 \
    libx11-6 \
    libx11-xcb1 \
    libxcb1 \
    libxcomposite1 \
    libxcursor1 \
    libxdamage1 \
    libxext6 \
    libxfixes3 \
    libxi6 \
    libxrandr2 \
    libxrender1 \
    libxss1 \
    libxtst6 \
    libxshmfence1 \
    libdrm2 \
    libxkbcommon0 \
    libatspi2.0-0 \
    lsb-release \
    wget \
    xdg-utils \
    --no-install-recommends && \
    rm -rf /var/lib/apt/lists/*

WORKDIR /root

# Copy Go executable
COPY --from=go-builder /root/bin/app ./app

# Copy mermaid CLI package files
COPY ./mermaidcli/package*.json ./
COPY ./mermaidcli/puppeteer-config.json ./

# Install Node dependencies and Chrome in single layer
RUN npm ci --only=production && \
    npx puppeteer browsers install chrome-headless-shell && \
    npm cache clean --force

# Set environment variables - let Puppeteer find Chrome automatically
ENV PUPPETEER_SKIP_CHROMIUM_DOWNLOAD=false

# Create directories for input/output
RUN mkdir -p ./in ./out && \
    chmod 0777 ./in ./out

# Health check
HEALTHCHECK --interval=30s --timeout=10s --start-period=5s --retries=3 \
    CMD wget --no-verbose --tries=1 --spider http://localhost:80/health || exit 1

# Expose port
EXPOSE 80

# Run the application directly
CMD ["./app", "--allow-all-origins=true", "--mermaid=./node_modules/.bin/mmdc", "--in=./in", "--out=./out", "--puppeteer=./puppeteer-config.json"]