FROM golang:1.26-alpine AS builder
WORKDIR /workspace

COPY go.work go.work.sum ./

# Manifests only, copied first, so `go mod download` gets its own cache layer
# invalidated only by dependency changes - not by every source edit below.
COPY gen/go.mod gen/go.sum ./gen/
COPY ai-gateway/go.mod ai-gateway/go.sum ./ai-gateway/
COPY ha-gateway/go.mod ha-gateway/go.sum ./ha-gateway/
COPY tts-gateway/go.mod tts-gateway/go.sum ./tts-gateway/
COPY alexa-bridge/go.mod alexa-bridge/go.sum ./alexa-bridge/
COPY alert-bridge/go.mod alert-bridge/go.sum ./alert-bridge/
COPY discord-bot/go.mod discord-bot/go.sum ./discord-bot/

WORKDIR /workspace/discord-bot
RUN go mod download

WORKDIR /workspace
COPY gen/ ./gen/
COPY ai-gateway/ ./ai-gateway/
COPY ha-gateway/ ./ha-gateway/
COPY tts-gateway/ ./tts-gateway/
COPY alexa-bridge/ ./alexa-bridge/
COPY alert-bridge/ ./alert-bridge/
COPY discord-bot/ ./discord-bot/

WORKDIR /workspace/discord-bot
ARG VERSION=dev
RUN CGO_ENABLED=0 GOOS=linux go build \
  -ldflags="-s -w -X main.version=${VERSION}" \
  -o /discord-bot ./cmd/bot

# /speak needs `ffmpeg` at runtime (github.com/jonas747/dca shells out to it to transcode
# tts-gateway's AAC output to Opus for Discord voice), which rules out a distroless base -
# same reasoning as tts-gateway/Dockerfile.
FROM ubuntu:22.04
RUN apt-get update && apt-get install -y --no-install-recommends \
    ffmpeg \
    ca-certificates \
    && rm -rf /var/lib/apt/lists/*

COPY --from=builder /discord-bot /discord-bot
ENTRYPOINT ["/discord-bot"]