# =============================================================================
# ngn-agent Docker Image — Custom Hermes image with platform engineering tools
# =============================================================================

# D-01: Base image tag python3.11-nodejs20 — verify availability at build time;
# if manifest not found, update to python3.11-nodejs22-bookworm
# (Node.js 20 EOL April 2026).
FROM nikolaik/python-nodejs:python3.11-nodejs20

LABEL description="ngn-agent: Custom Hermes Docker image with platform engineering tools"
LABEL maintainer="ngn-agent"

# =============================================================================
# Tool version pinning (D-02: pin for reproducibility)
# =============================================================================
ARG TERRAFORM_VERSION=1.15.6
ARG HELM_VERSION=4.2.0
ARG KUBECTL_VERSION=1.36.1
ARG PUPP_VERSION=1.1.0

# =============================================================================
# Install system dependencies (single RUN, clean apt lists after)
# =============================================================================
RUN apt-get update && apt-get install -y --no-install-recommends \
    curl \
    ca-certificates \
    unzip \
    gnupg \
    wget \
    && rm -rf /var/lib/apt/lists/*

# =============================================================================
# Install AWS CLI v2 (D-03: official curl → unzip → ./aws/install method)
# No apt repo for v2 — use the bundled installer.
# Architecture detection: supports x86_64 and arm64 (aarch64).
# T-09-01: download over HTTPS.
# =============================================================================
RUN ARCH=$(uname -m) && \
    case "$ARCH" in \
        x86_64)   AWS_URL="https://awscli.amazonaws.com/awscli-exe-linux-x86_64.zip" ;; \
        aarch64)  AWS_URL="https://awscli.amazonaws.com/awscli-exe-linux-aarch64.zip" ;; \
        *)        echo "Unsupported architecture: $ARCH" >&2; exit 1 ;; \
    esac && \
    curl -fsSL "$AWS_URL" -o "awscliv2.zip" \
    && unzip -q awscliv2.zip \
    && ./aws/install --bin-dir /usr/local/bin --install-dir /usr/local/aws-cli \
    && rm -rf awscliv2.zip aws/

# =============================================================================
# Install Terraform (D-03: HashiCorp apt repo, version-pinned)
# T-09-01: HTTPS + GPG key verification.
# =============================================================================
RUN wget -O- https://apt.releases.hashicorp.com/gpg 2>/dev/null \
    | gpg --dearmor -o /usr/share/keyrings/hashicorp-archive-keyring.gpg \
    && . /etc/os-release && echo "deb [arch=$(dpkg --print-architecture) signed-by=/usr/share/keyrings/hashicorp-archive-keyring.gpg] https://apt.releases.hashicorp.com ${VERSION_CODENAME} main" \
    | tee /etc/apt/sources.list.d/hashicorp.list > /dev/null \
    && apt-get update && apt-get install -y --no-install-recommends terraform=${TERRAFORM_VERSION}-1 \
    && rm -rf /var/lib/apt/lists/*

# =============================================================================
# Install kubectl (D-03: Google Kubernetes apt repo)
# NOT version-pinned — must match target cluster version.
# T-09-01: HTTPS + GPG key verification.
# =============================================================================
RUN curl -fsSL https://pkgs.k8s.io/core:/stable:/v1.36/deb/Release.key \
    | gpg --dearmor -o /usr/share/keyrings/kubernetes-apt-keyring.gpg \
    && echo 'deb [signed-by=/usr/share/keyrings/kubernetes-apt-keyring.gpg] https://pkgs.k8s.io/core:/stable:/v1.36/deb/ /' \
    | tee /etc/apt/sources.list.d/kubernetes.list > /dev/null \
    && apt-get update && apt-get install -y --no-install-recommends kubectl \
    && rm -rf /var/lib/apt/lists/*

# =============================================================================
# Install Helm (D-03: Buildkite apt repo, version-pinned)
# T-09-01: HTTPS + GPG key verification.
# =============================================================================
RUN curl -fsSL https://packages.buildkite.com/helm-linux/helm-debian/gpgkey \
    | gpg --dearmor -o /usr/share/keyrings/helm.gpg \
    && echo "deb [signed-by=/usr/share/keyrings/helm.gpg] https://packages.buildkite.com/helm-linux/helm-debian/any/ any main" \
    | tee /etc/apt/sources.list.d/helm-stable-debian.list > /dev/null \
    && apt-get update && apt-get install -y --no-install-recommends helm=${HELM_VERSION}-1 \
    && rm -rf /var/lib/apt/lists/*

# =============================================================================
# Install Datadog CLI — pup (D-03: GitHub releases binary)
# Architecture detection: supports x86_64 and arm64 (aarch64).
# T-09-01: download over HTTPS.
# =============================================================================
RUN ARCH=$(uname -m) && \
    case "$ARCH" in \
        x86_64)   PUPP_ARCH="x86_64" ;; \
        aarch64)  PUPP_ARCH="arm64"  ;; \
        *)        echo "Unsupported architecture: $ARCH" >&2; exit 1 ;; \
    esac && \
    curl -fsSL "https://github.com/DataDog/pup/releases/download/v${PUPP_VERSION}/pup_${PUPP_VERSION}_Linux_${PUPP_ARCH}.tar.gz" \
    -o /tmp/pup.tar.gz \
    && tar xzf /tmp/pup.tar.gz -C /usr/local/bin/ pup \
    && rm -f /tmp/pup.tar.gz

# =============================================================================
# Verify all tool installations
# =============================================================================
RUN echo "=== Tool versions ===" \
    && aws --version \
    && terraform --version \
    && helm version --short \
    && kubectl version --client --output=yaml 2>/dev/null | grep gitVersion || true \
    && pup --version || true

# =============================================================================
# Default command (matching base image behavior)
# =============================================================================
CMD ["bash"]