# Multi-stage build for Aethera
# Stage 1: Build frontend assets
FROM oven/bun:1 AS frontend-builder

WORKDIR /app/frontend

# Copy frontend package files
COPY frontend/package.json frontend/bun.lock ./

# Install dependencies
RUN bun install --frozen-lockfile

# Copy frontend source code
COPY frontend/ ./

# Build frontend assets
RUN bun run build

# Stage 2: Build Go binary
FROM golang:1.25-alpine AS backend-builder

WORKDIR /app

# Install build dependencies
RUN apk add --no-cache git

# Copy go mod files
COPY backend/go.mod backend/go.sum ./

# Download Go dependencies
RUN go mod download

# Copy backend source code
COPY backend/ ./

# Copy frontend assets from previous stage
COPY --from=frontend-builder /app/frontend/public/dist ./public/dist
COPY --from=frontend-builder /app/frontend/public/index.html ./public/
COPY --from=frontend-builder /app/frontend/public/pages ./public/pages

# Build the Go binary
RUN CGO_ENABLED=0 GOOS=linux go build -ldflags="-w -s" -o aethera ./cmd

# Stage 3: Create minimal runtime image
FROM alpine:3.21

# Install ca-certificates for HTTPS calls
RUN apk add --no-cache ca-certificates

WORKDIR /app

# Copy the binary from the builder stage
COPY --from=backend-builder /app/aethera .

# Copy static assets
COPY --from=backend-builder /app/public ./public

# Create data directory
RUN mkdir -p /app/data

# Expose the default port
EXPOSE 8080

# Set environment variable defaults
ENV AETHERA_LISTEN=0.0.0.0
ENV AETHERA_PORT=8080
ENV AETHERA_DATA_DIR=/app/data

# Set the entrypoint
ENTRYPOINT ["./aethera"]