# ============================================================
# AIOps Embed Dockerfile — 前端嵌入后端二进制，单容器部署
# Stage 1: 构建前端 (Node 20)
# Stage 2: 构建后端 (Go 1.24, go:embed 前端)
# Stage 3: Agent 交叉编译
# Stage 4: 运行时 (Alpine, 单二进制服务前后端)
# 署名 Logan.Li
# ============================================================

ARG VERSION=dev
ARG BUILD_TIME=unknown
ARG GIT_COMMIT=unknown
ARG KUBECTL_VERSION=v1.32.2

# ==================== Stage 1: Frontend Builder ====================
FROM node:20-alpine AS frontend-builder

WORKDIR /app

# 限制 Node 内存，避免 2 核小机器 docker build 时 OOM/高负载 // Logan.Li
ENV NODE_OPTIONS="--max-old-space-size=2048"

# 使用淘宝镜像加速
RUN npm config set registry https://registry.npmmirror.com

# 安装依赖（利用 Docker 缓存层）
COPY frontend/package.json frontend/package-lock.json ./
RUN npm ci

# 复制源代码并构建
COPY frontend/ ./
RUN npm run build

# ==================== Stage 2: Backend Builder ====================
FROM golang:1.25-alpine AS backend-builder

ARG VERSION
ARG BUILD_TIME
ARG GIT_COMMIT
ARG TARGETARCH

WORKDIR /app

# 安装构建依赖（纯 Go SQLite 无需 gcc/musl-dev）// Logan.Li
COPY scripts/setup-alpine-mirrors.sh /tmp/setup-alpine-mirrors.sh
RUN chmod +x /tmp/setup-alpine-mirrors.sh && /tmp/setup-alpine-mirrors.sh && \
    apk add --no-cache git ca-certificates tzdata

ENV TZ=Asia/Shanghai
ENV GOPROXY=https://goproxy.cn,direct
ENV GONOSUMCHECK=*
ENV GOMODCACHE=/go/pkg/mod
ENV GOCACHE=/root/.cache/go-build

# 复制后端 go.mod，第三方 RDP 兜底依赖已移除，后端使用自研 RDP 引擎。 // Logan.Li
COPY backend/go.mod backend/go.sum ./
RUN --mount=type=cache,target=/go/pkg/mod \
    go mod download

# 复制后端源码
COPY backend/ ./

# ★ 核心：将前端构建产物复制到 embed 目录
RUN rm -rf static && mkdir -p static
COPY --from=frontend-builder /app/dist/ static/

# 构建后端二进制（纯 Go 无 CGO，cache mount 增量编译）// Logan.Li
RUN --mount=type=cache,target=/root/.cache/go-build \
    --mount=type=cache,target=/go/pkg/mod \
    CGO_ENABLED=0 GOOS=linux GOARCH=${TARGETARCH} go build \
    -ldflags="-w -s -X main.Version=${VERSION} -X main.BuildTime=${BUILD_TIME} -X main.GitCommit=${GIT_COMMIT}" \
    -o aiops .

# ==================== Stage 3: Agent Builder ====================
FROM golang:1.24-alpine AS agent-builder

ARG VERSION
ARG BUILD_TIME
ARG TARGETARCH

WORKDIR /agent

ENV GOPROXY=https://goproxy.cn,direct
ENV GOSUMDB=off

COPY agent/go.mod agent/go.sum ./
RUN go mod download

COPY agent/ ./

# 交叉编译主流服务器平台 Agent：Linux x86_64 / Linux ARM64 / Windows x86_64。
# Go 在 CGO_ENABLED=0 下可原生交叉编译，无需 QEMU，故一次性产出全部目标，
# 与 router/agent_static.go 的下载清单保持一致，避免 ARM 主机下载 404。 // Logan.Li
RUN CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build \
    -ldflags="-s -w -X main.version=${VERSION} -X main.buildTime=${BUILD_TIME}" \
    -o bin/aiops-agent-linux-amd64 .
RUN CGO_ENABLED=0 GOOS=linux GOARCH=arm64 go build \
    -ldflags="-s -w -X main.version=${VERSION} -X main.buildTime=${BUILD_TIME}" \
    -o bin/aiops-agent-linux-arm64 .
RUN CGO_ENABLED=0 GOOS=windows GOARCH=amd64 go build \
    -ldflags="-s -w -X main.version=${VERSION} -X main.buildTime=${BUILD_TIME}" \
    -o bin/aiops-agent-windows-amd64.exe .

# ==================== Stage 4: Runtime ====================
FROM alpine:3.20

ARG TARGETARCH
ARG KUBECTL_VERSION=v1.32.2

# 安装运行时依赖（U4 镜像瘦身 — 核心最小集, git/docker-cli 改为懒加载）// Logan.Li
# kubectl 通过 install-kubectl.sh 下载（避免构建上下文携带 60MB 二进制）// Logan.Li
COPY scripts/setup-alpine-mirrors.sh scripts/install-kubectl.sh /tmp/
RUN chmod +x /tmp/setup-alpine-mirrors.sh && /tmp/setup-alpine-mirrors.sh && \
    apk add --no-cache ca-certificates tzdata bash curl python3 && \
    chmod +x /tmp/install-kubectl.sh && \
    TARGET_OS=linux TARGET_ARCH="${TARGETARCH}" KUBECTL_VERSION="${KUBECTL_VERSION}" \
    /tmp/install-kubectl.sh /usr/local/bin/kubectl && \
    rm -f /tmp/setup-alpine-mirrors.sh /tmp/install-kubectl.sh

ENV TZ=Asia/Shanghai

WORKDIR /app

# 复制后端二进制（前端已嵌入）
COPY --from=backend-builder /app/aiops .

# 创建非 root 运行用户及应用可写目录。工具懒加载目录由该用户写入。 // Logan.Li
RUN addgroup -S -g 10001 aiops && \
    adduser -S -D -H -u 10001 -G aiops aiops && \
    mkdir -p /app/agent/bin /app/agent/deploy /app/uploads /app/logs /app/tmp \
        /home/aiops && \
    chown -R aiops:aiops /app /home/aiops /usr/local && \
    chmod 1777 /tmp

# 复制 agent 二进制。 // Logan.Li
# 复制主流平台 agent 二进制（与 router/agent_static.go 的下载清单一一对应）。 // Logan.Li
COPY --from=agent-builder /agent/bin/aiops-agent-linux-amd64       /app/agent/bin/aiops-agent-linux-amd64
COPY --from=agent-builder /agent/bin/aiops-agent-linux-arm64       /app/agent/bin/aiops-agent-linux-arm64
COPY --from=agent-builder /agent/bin/aiops-agent-windows-amd64.exe /app/agent/bin/aiops-agent-windows-amd64.exe

# 复制 agent 安装脚本
COPY agent/deploy/install.sh          /app/agent/deploy/
COPY agent/deploy/install.ps1         /app/agent/deploy/
COPY agent/deploy/aiops-agent.service /app/agent/deploy/

# 应用进程不得使用 root；部署清单还会限制 Linux capabilities。 // Logan.Li
USER 10001:10001
ENV HOME=/home/aiops \
    TMPDIR=/app/tmp

EXPOSE 8080

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

CMD ["./aiops"]