# ========================================
# Base Stage: Alpine Linux with Bun
# ========================================
FROM oven/bun:1.3.3-alpine AS base

# ========================================
# Dependencies Stage: Install Dependencies
# ========================================
FROM base AS deps
RUN apk add --no-cache libc6-compat
WORKDIR /app

COPY package.json bun.lock turbo.json ./
RUN mkdir -p apps packages/db
COPY apps/sim/package.json ./apps/sim/package.json
COPY packages/db/package.json ./packages/db/package.json

# Install turbo globally and dependencies with cache mount for faster builds
RUN --mount=type=cache,id=bun-cache,target=/root/.bun/install/cache \
    bun install -g turbo && \
    bun install --frozen-lockfile --omit dev --ignore-scripts

# ========================================
# Builder Stage: Build the Application
# ========================================
FROM base AS builder
WORKDIR /app

# Install turbo globally (cached for fast reinstall)
RUN --mount=type=cache,id=bun-cache,target=/root/.bun/install/cache \
    bun install -g turbo

# Copy node_modules from deps stage (cached if dependencies don't change)
COPY --from=deps /app/node_modules ./node_modules

# Copy package configuration files (needed for build)
COPY package.json bun.lock turbo.json ./
COPY apps/sim/package.json ./apps/sim/package.json
COPY packages/db/package.json ./packages/db/package.json

# Copy workspace configuration files (needed for turbo)
COPY apps/sim/next.config.ts ./apps/sim/next.config.ts
COPY apps/sim/tsconfig.json ./apps/sim/tsconfig.json
COPY apps/sim/tailwind.config.ts ./apps/sim/tailwind.config.ts
COPY apps/sim/postcss.config.mjs ./apps/sim/postcss.config.mjs

# Copy source code (changes most frequently - placed last to maximize cache hits)
COPY apps/sim ./apps/sim
COPY packages ./packages

# Required for standalone nextjs build
WORKDIR /app/apps/sim
RUN --mount=type=cache,id=bun-cache,target=/root/.bun/install/cache \
    bun install sharp

ENV NEXT_TELEMETRY_DISABLED=1 \
    VERCEL_TELEMETRY_DISABLED=1 \
    DOCKER_BUILD=1

WORKDIR /app

# Provide dummy database URLs during image build so server code that imports @sim/db
# can be evaluated without crashing. Runtime environments should override these.
ARG DATABASE_URL="postgresql://user:pass@localhost:5432/dummy"
ENV DATABASE_URL=${DATABASE_URL}

# Provide dummy NEXT_PUBLIC_APP_URL for build-time evaluation
# Runtime environments should override this with the actual URL
ARG NEXT_PUBLIC_APP_URL="http://localhost:3000"
ENV NEXT_PUBLIC_APP_URL=${NEXT_PUBLIC_APP_URL}

RUN bun run build

# ========================================
# Runner Stage: Run the actual app
# ========================================

FROM base AS runner
WORKDIR /app

# Install Python and dependencies for guardrails PII detection (cached separately)
# Also install ffmpeg for audio/video processing in STT
RUN apk add --no-cache python3 py3-pip bash ffmpeg

ENV NODE_ENV=production

# Create non-root user and group (cached separately)
RUN addgroup -g 1001 -S nodejs && \
    adduser -S nextjs -u 1001

# Copy application artifacts from builder (these change on every build)
COPY --from=builder --chown=nextjs:nodejs /app/apps/sim/public ./apps/sim/public
COPY --from=builder --chown=nextjs:nodejs /app/apps/sim/.next/standalone ./
COPY --from=builder --chown=nextjs:nodejs /app/apps/sim/.next/static ./apps/sim/.next/static

# Guardrails setup (files need to be owned by nextjs for runtime)
COPY --from=builder --chown=nextjs:nodejs /app/apps/sim/lib/guardrails/setup.sh ./apps/sim/lib/guardrails/setup.sh
COPY --from=builder --chown=nextjs:nodejs /app/apps/sim/lib/guardrails/requirements.txt ./apps/sim/lib/guardrails/requirements.txt
COPY --from=builder --chown=nextjs:nodejs /app/apps/sim/lib/guardrails/validate_pii.py ./apps/sim/lib/guardrails/validate_pii.py

# Run guardrails setup as root, then fix ownership of generated venv files
RUN chmod +x ./apps/sim/lib/guardrails/setup.sh && \
    cd ./apps/sim/lib/guardrails && \
    ./setup.sh && \
    chown -R nextjs:nodejs /app/apps/sim/lib/guardrails

# Create .next/cache directory with correct ownership
RUN mkdir -p apps/sim/.next/cache && \
    chown -R nextjs:nodejs /app

# Switch to non-root user
USER nextjs

EXPOSE 3000
ENV PORT=3000 \
    HOSTNAME="0.0.0.0"

CMD ["bun", "apps/sim/server.js"]