# Build stage
FROM golang:1.25.7-alpine AS builder

WORKDIR /app

# Build-time args (passed from docker-compose build)
ARG DB_URL
ARG REDIS_URL
ARG REDIS_HOST
ARG REDIS_PORT
ARG EMAIL_HOST
ARG EMAIL_PORT

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

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

# Download all dependencies
RUN go mod download

# Copy the source code
COPY . .

# Build the application
RUN CGO_ENABLED=0 GOOS=linux go build -o main .

# Final stage
FROM alpine:latest

WORKDIR /app

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

# Set runtime ENV from build args (1:1 usage)
ENV DB_URL=${DB_URL}
ENV REDIS_URL=${REDIS_URL}
ENV REDIS_HOST=${REDIS_HOST}
ENV REDIS_PORT=${REDIS_PORT}
ENV EMAIL_HOST=${EMAIL_HOST}
ENV EMAIL_PORT=${EMAIL_PORT}

# Copy the binary from builder
COPY --from=builder /app/main .



# Copy docs and views for static serving if not mounted
COPY docs ./docs
COPY views ./views

# Create uploads directory
RUN mkdir -p uploads

# Expose the port
EXPOSE 8080

# Command to run the executable
CMD ["./main"]