# update_semaphore.yml

- name: Update Semaphore on VM via Proxmox
  hosts: linux_servers
  gather_facts: false
  become: true
  become_user: root
  become_method: sudo

  vars:
    # --- Connection to VM (provided by Semaphore env vars) ---
    vm_ip:   "{{ lookup('env', 'VM_IP') }}"      # IP vm-portainer
    vm_user: "{{ lookup('env', 'VM_USER') }}"
    vm_pass: "{{ lookup('env', 'VM_PASS') }}"
    use_sudo: false

    # --- Debug mode (controlled via Semaphore variable) ---
    DEBUG: "{{ lookup('env', 'DEBUG') | default(0) | int }}"

    # --- Semaphore specifics ---
    semaphore_project: "semaphore"
    semaphore_compose_file: "/data/compose/semaphore/docker-compose.yml"
    semaphore_service: "semaphore"

  tasks:
    - name: Ensure sshpass is installed (for password-based SSH)  # English comments
      ansible.builtin.apt:
        name: sshpass
        state: present
        update_cache: yes

    - name: Run Semaphore self-update on VM in background (nohup + log)
      ansible.builtin.command:
        argv:
          - sshpass
          - -e
          - ssh
          - -o
          - StrictHostKeyChecking=no
          - -o
          - ConnectTimeout=15
          - "{{ vm_user }}@{{ vm_ip }}"
          - bash
          - -lc
          - |
              set -euo pipefail

              # English comments: store state in user's home (more reliable than /tmp)
              STATE_DIR="${XDG_CACHE_HOME:-$HOME/.cache}/semaphore-self-update"
              mkdir -p "$STATE_DIR"

              RID="$(date +%s)"
              LOG="$STATE_DIR/run-${RID}.log"
              PIDF="$STATE_DIR/run-${RID}.pid"
              RCF="$STATE_DIR/run-${RID}.rc"
              SH="$STATE_DIR/run-${RID}.sh"

              # English comments: write worker script (no variable expansion while writing)
              cat > "$SH" <<'EOS'
              #!/usr/bin/env bash
              set -euo pipefail
              unalias docker 2>/dev/null || true
              export DOCKER_CLI_HINTS=0

              echo "=== started: $(date -Is) ==="
              echo "host: $(hostname)"
              echo "compose: {{ semaphore_compose_file }}"
              echo "project: {{ semaphore_project }} service: {{ semaphore_service }}"
              echo "USE_SUDO=${USE_SUDO:-0}"
              echo

              sleep 15

              DOCKER="docker"
              if [ "${USE_SUDO:-0}" = "1" ]; then
                DOCKER="sudo -n docker"
              fi

              # English comments: pull explicitly + recreate
              $DOCKER compose -p {{ semaphore_project }} -f {{ semaphore_compose_file }} pull {{ semaphore_service }}
              $DOCKER compose -p {{ semaphore_project }} -f {{ semaphore_compose_file }} up -d --no-deps --force-recreate {{ semaphore_service }}

              echo
              echo "=== finished: $(date -Is) ==="
              EOS

              chmod +x "$SH"

              # English comments: start in background, persist output, store pid + rc
              nohup env USE_SUDO="{{ lookup('env', 'USE_SUDO') | default('0') }}" \
                bash "$SH" >"$LOG" 2>&1 </dev/null &

              echo $! >"$PIDF"

              # English comments: best-effort rc tracking (will be overwritten at end if you add it later)
              echo "running" >"$RCF"

              echo "scheduled: pid=$(cat "$PIDF"), log=$LOG, script=$SH, rcfile=$RCF"
      environment:
        SSHPASS: "{{ vm_pass }}"
      register: semaphore_update
      changed_when: false
      no_log: "{{ DEBUG == 0 }}"


    - name: Show result of Semaphore self-update (debug)
      ansible.builtin.debug:
        msg: |
          RC:      {{ semaphore_update.rc }}
          STDOUT:  {{ (semaphore_update.stdout | default('')).strip() }}
          STDERR:  {{ (semaphore_update.stderr | default('')).strip() }}
      when: DEBUG == 1