---
# Production deploy playbook for sa-wellness (multi-tenant wellness SaaS API).
# Additions-only to sam/semaphore.git /playbook — derived from playbook/deploy-webapp.yml.
# Semaphore runs this to promote a registry image to production (Gate 3).
#
# Required extra-vars:
#   version: immutable image tag to deploy, e.g. v0.1.0 — passing a PRIOR tag = rollback.
# Optional:
#   node:    proxmox node hosting the prod LXC (default pve4)
#   port:    API container port (default 3001)
#
# Deploy:   -e "version=v0.1.0"
# Rollback: re-run with a prior version tag, e.g. -e "version=v0.1.0"
#
# Secrets (injected by Semaphore from Infisical as env, never committed / printed):
#   REGISTRY_USER, REGISTRY_TOKEN  — Gitea OCI registry pull creds
#   SA_DB_PASSWORD                 — production PostgreSQL password
#   SA_JWT_SIGNING_KEY             — >= 32 chars; app fails closed otherwise
#   SA_CORS_ORIGINS                — exact comma-separated production origin(s)

- name: Deploy sa-wellness:{{ version | default('UNSET') }} to production
  hosts: "{{ node | default('pve4') }}"
  gather_facts: false
  vars:
    registry: "192.168.122.103:3000"
    prefix: "sa-wellness"
    image: "192.168.122.103:3000/sam/sa-wellness:{{ version }}"
    ctname: "sa-wellness-prod"
    cport: "{{ port | default('3001') }}"
    net: "sa-net"
    dburl: "postgresql://sa:{{ lookup('env','SA_DB_PASSWORD') }}@sa-db:5432/sa_wellness"
  tasks:
    - name: Require an immutable version argument
      ansible.builtin.assert:
        that:
          - version is defined
          - version | length > 0
          - version is match('^v[0-9]+\.[0-9]+\.[0-9]+$')
        fail_msg: "version must be an immutable vMAJOR.MINOR.PATCH tag (pass -e version=vX.Y.Z). Rollback = a prior tag."

    - name: Require production secrets are present
      ansible.builtin.assert:
        that:
          - lookup('env','SA_JWT_SIGNING_KEY') | length >= 32
          - lookup('env','SA_DB_PASSWORD') | length > 0
          - lookup('env','SA_CORS_ORIGINS') | length > 0
        fail_msg: "SA_JWT_SIGNING_KEY (>=32), SA_DB_PASSWORD, and SA_CORS_ORIGINS must be injected by Semaphore."
      no_log: true

    - name: Ensure the prod LXC exists (provisioned by Semaphore before first deploy)
      ansible.builtin.shell: |
        set -e
        if [ -z "$(pct list | awk '$0 ~ /{{ ctname }}/ {print $1}')" ]; then
          echo "prod LXC {{ ctname }} must be provisioned by Semaphore before first deploy"; exit 3
        fi
      changed_when: false

    - name: Resolve the prod LXC VMID
      ansible.builtin.shell: "pct list | awk '$0 ~ /{{ ctname }}/ {print $1}'"
      register: vmid_out
      changed_when: false

    - name: Set VMID fact
      ansible.builtin.set_fact:
        vmid: "{{ vmid_out.stdout | trim }}"

    - name: Log in to the Gitea registry inside the prod LXC (creds never printed)
      ansible.builtin.shell: >
        pct exec {{ vmid }} -- bash -lc
        'echo "{{ lookup("env","REGISTRY_TOKEN") }}" | docker login {{ registry }} -u "{{ lookup("env","REGISTRY_USER") }}" --password-stdin'
      no_log: true

    - name: Ensure docker network exists
      ansible.builtin.shell: "pct exec {{ vmid }} -- docker network create {{ net }} 2>/dev/null || true"
      changed_when: false

    - name: Ensure PostgreSQL is running (persistent volume)
      ansible.builtin.shell: >
        pct exec {{ vmid }} -- bash -lc
        'docker ps --filter name=sa-db --filter status=running -q | grep -q . ||
         docker run -d --name sa-db --network {{ net }} --restart unless-stopped
         -e POSTGRES_USER=sa -e POSTGRES_PASSWORD="{{ lookup("env","SA_DB_PASSWORD") }}" -e POSTGRES_DB=sa_wellness
         -v sa-db-data:/var/lib/postgresql/data postgres:16-alpine'
      no_log: true

    - name: Wait for PostgreSQL readiness
      ansible.builtin.shell: >
        pct exec {{ vmid }} -- bash -lc
        'for i in $(seq 1 30); do docker exec sa-db pg_isready -U sa >/dev/null 2>&1 && exit 0; sleep 1; done; exit 1'
      changed_when: false

    - name: Pull the versioned image
      ansible.builtin.shell: "pct exec {{ vmid }} -- docker pull {{ image }}"

    - name: Run migrations for this version (app does not auto-migrate)
      ansible.builtin.shell: >
        pct exec {{ vmid }} -- docker run --rm --network {{ net }}
        -e DATABASE_URL="{{ dburl }}" --entrypoint node {{ image }} dist/db/migrate.js
      no_log: true

    - name: Stop/remove previous app container (idempotent)
      ansible.builtin.shell: "pct exec {{ vmid }} -- docker rm -f sa-app 2>/dev/null || true"
      changed_when: false

    - name: Run the versioned API container (non-root image; secrets via env)
      ansible.builtin.shell: >
        pct exec {{ vmid }} -- docker run -d --name sa-app --network {{ net }} --restart unless-stopped
        -e DATABASE_URL="{{ dburl }}"
        -e JWT_SIGNING_KEY="{{ lookup('env','SA_JWT_SIGNING_KEY') }}"
        -e CORS_ORIGINS="{{ lookup('env','SA_CORS_ORIGINS') }}"
        -e PORT={{ cport }}
        -p {{ cport }}:{{ cport }} {{ image }}
      no_log: true

    - name: Verify liveness (/healthz 200)
      ansible.builtin.shell: >
        pct exec {{ vmid }} -- bash -lc
        'for i in $(seq 1 15); do [ "$(curl -s -o /dev/null -w %{http_code} http://127.0.0.1:{{ cport }}/healthz)" = "200" ] && exit 0; sleep 1; done; exit 1'
      changed_when: false

    - name: Verify readiness (/readyz 200 — database reachable)
      ansible.builtin.shell: >
        pct exec {{ vmid }} -- bash -lc
        'for i in $(seq 1 15); do [ "$(curl -s -o /dev/null -w %{http_code} http://127.0.0.1:{{ cport }}/readyz)" = "200" ] && exit 0; sleep 1; done; exit 1'
      changed_when: false

    - name: Record deploy result
      ansible.builtin.debug:
        msg: "Deployed {{ image }} to {{ ctname }} (VMID {{ vmid }}, port {{ cport }}). Rollback: re-run with a prior version tag."