# Build stage
FROM golang:1.21-alpine AS builder

WORKDIR /app

# Copy go mod files
COPY go.mod go.sum ./
RUN go mod download

# Copy source code
COPY cmd/landing_main.go ./
COPY web/ ./web/

# Build the application
RUN CGO_ENABLED=0 GOOS=linux go build -o landing-app landing_main.go

# Final stage
FROM alpine:latest

# Install runtime dependencies
RUN apk --no-cache add ca-certificates tzdata curl

# Create non-root user
RUN addgroup -g 1001 -S ydn && \
    adduser -u 1001 -S ydn -G ydn

# Set working directory
WORKDIR /app

# Copy binary from builder stage
COPY --from=builder /app/landing-app .

# Copy web assets
COPY --from=builder /app/web ./web

# Create necessary directories
RUN mkdir -p logs configs

# Change ownership
RUN chown -R ydn:ydn /app

# Switch to non-root user
USER ydn

# Expose port
EXPOSE 8080

# Health check
HEALTHCHECK --interval=30s --timeout=10s --start-period=5s --retries=3 \
    CMD curl -f http://localhost:8080/health || exit 1

# Run the application
CMD ["./landing-app"]