# syntax=docker/dockerfile:1
FROM golang:1.25-alpine AS builder

WORKDIR /build

RUN apk add --no-cache git make

COPY go.mod go.sum ./
RUN --mount=type=cache,target=/go/pkg/mod \
    go mod download

COPY . .

ARG VERSION=dev
ARG COMMIT_HASH=unknown
ARG BUILD_TIME=unknown

ARG TARGETOS
ARG TARGETARCH

RUN --mount=type=cache,target=/go/pkg/mod \
    --mount=type=cache,target=/root/.cache/go-build \
    set -eux; \
    build_os="${TARGETOS:-linux}"; \
    build_arch="${TARGETARCH:-$(uname -m)}"; \
    case "$build_arch" in \
      x86_64) build_arch="amd64" ;; \
      aarch64) build_arch="arm64" ;; \
    esac; \
    case "$build_arch" in \
      amd64|arm64) ;; \
      *) echo "unsupported TARGETARCH: $build_arch (only amd64/arm64)"; exit 1 ;; \
    esac; \
    CGO_ENABLED=0 GOOS="$build_os" GOARCH="$build_arch" \
    go build -trimpath \
    -ldflags "-s -w \
      -X github.com/memohai/memoh/internal/version.Version=${VERSION} \
      -X github.com/memohai/memoh/internal/version.CommitHash=${COMMIT_HASH} \
      -X github.com/memohai/memoh/internal/version.BuildTime=${BUILD_TIME}" \
    -o memoh-server ./cmd/agent/main.go

FROM alpine:latest

WORKDIR /app

RUN apk add --no-cache ca-certificates tzdata wget nerdctl cni-plugins iptables \
    && mkdir -p /opt/cni/bin \
    && (cp -a /usr/lib/cni/. /opt/cni/bin/ 2>/dev/null || true) \
    && (cp -a /usr/libexec/cni/. /opt/cni/bin/ 2>/dev/null || true) \
    && mkdir -p /etc/cni/net.d /var/lib/cni \
    && printf '%s\n' \
      '{' \
      '  "cniVersion": "1.0.0",' \
      '  "name": "memoh-cni",' \
      '  "plugins": [' \
      '    {' \
      '      "type": "bridge",' \
      '      "bridge": "cni0",' \
      '      "isGateway": true,' \
      '      "ipMasq": true,' \
      '      "promiscMode": true,' \
      '      "ipam": {' \
      '        "type": "host-local",' \
      '        "ranges": [[' \
      '          { "subnet": "10.88.0.0/16" }' \
      '        ]],' \
      '        "routes": [' \
      '          { "dst": "0.0.0.0/0" }' \
      '        ]' \
      '      }' \
      '    },' \
      '    {' \
      '      "type": "portmap",' \
      '      "capabilities": { "portMappings": true }' \
      '    }' \
      '  ]' \
      '}' > /etc/cni/net.d/10-memoh.conflist

COPY --from=builder /build/memoh-server /app/memoh-server
COPY --from=builder /build/spec /app/spec

RUN mkdir -p /opt/memoh/data

EXPOSE 8080

HEALTHCHECK --interval=30s --timeout=3s --start-period=5s --retries=3 \
    CMD wget --no-verbose --tries=1 --spider http://127.0.0.1:8080/health \
      || wget --no-verbose --tries=1 --spider http://server:8080/health \
      || exit 1

CMD ["/app/memoh-server"]