---
# Playbook: ora_stand_datapatch.yml

# Usage example: 

# ansible-playbook playbooks/ora_stand_datapatch.yml \
#   -e server=togoria \
#   -e oracle_sid=NABOOPRD 


- name: Gather facts for a specific inventory host
  hosts: "{{ server }}"
  gather_facts: yes
  become: true
  become_user: oracle
  become_method: su

  pre_tasks:
    - name: Ensure 'server' variable is provided
      assert:
        that: server is defined
        fail_msg: "Please provide the server via -e 'server=<server>'"

    - name: Ensure 'oracle_sid' variable is provided
      assert:
        that: oracle_sid is defined
        fail_msg: "Please provide the oracle_sid via -e 'oracle_sid=<oracle_sid>'"

  tasks:
    - name: Show selected system facts
      debug:
        msg:
          hostname: "{{ (ansible_facts.nodename | default(ansible_facts.hostname)) | default('unknown') }}"
          os_family: "{{ ansible_facts.os_family | default(ansible_facts.distribution | default('unknown')) }}"
          operating_system: "{{ ansible_facts.distribution | default('unknown') }} {{ ansible_facts.distribution_version | default('') }}"
          ip_address: "{{ ansible_default_ipv4.address | default('unknown') }}"
          hardware_model: "{{ ansible_facts['machine'] | default('unknown') }}"
          cpu_count: "{{ ansible_facts['processor_vcpus'] | default(ansible_facts['processor_count'] | default('unknown')) }}"
          ram_gb: "{{ (ansible_facts['memtotal_mb'] / 1024) | int | default('unknown') }}"

    - name: Source oraenv and display OPatch informations
      shell: |
        . oraenv <<< {{ oracle_sid }} && $ORACLE_HOME/OPatch/opatch version && echo && echo && $ORACLE_HOME/OPatch/opatch lspatches
      register: opatch_output
      when: oracle_sid is defined

    - name: Display OPatch output
      debug:
        var: opatch_output.stdout_lines
      when: oracle_sid is defined

    - name: Check Oracle instance status via sqlplus as SYSDBA
      shell: |
        . oraenv <<< {{ oracle_sid }} >/dev/null 2>&1
        $ORACLE_HOME/bin/sqlplus -s / as sysdba <<'SQL'
        set heading off feedback off verify off pagesize 0
        select status from v$instance;
        exit
        SQL
      register: instance_status
      changed_when: false
      when: oracle_sid is defined

    - name: Show Oracle instance status
      debug:
        msg: "Oracle instance {{ oracle_sid }} status: {{ instance_status.stdout | trim | default('unknown') }}"
      when: oracle_sid is defined

    - name: Fail if Oracle instance is not OPEN
      fail:
        msg: "Oracle instance {{ oracle_sid }} is not OPEN (status: {{ instance_status.stdout | default('unknown') }})"
      when: oracle_sid is defined and ("OPEN" not in (instance_status.stdout | default('')))

    - name: List PDBs (if multitenant)
      shell: |
        . oraenv <<< {{ oracle_sid }} >/dev/null 2>&1
        $ORACLE_HOME/bin/sqlplus -s / as sysdba <<'SQL'
        set heading off feedback off verify off pagesize 0
        select name||':'||open_mode from v$pdbs where name!='PDB$SEED';
        exit
        SQL
      register: pdb_list
      failed_when: false
      changed_when: false
      when: oracle_sid is defined

    - name: Determine if database is multitenant
      set_fact:
        is_multitenant: "{{ (pdb_list.stdout is defined) and ('ORA-' not in pdb_list.stdout) and (pdb_list.stdout | trim != '') }}"
      when: oracle_sid is defined

    - name: Show PDB list (if multitenant)
      debug:
        var: pdb_list.stdout_lines
      when: oracle_sid is defined and is_multitenant

    - name: Check for non-OPEN PDBs
      shell: |
        . oraenv <<< {{ oracle_sid }} >/dev/null 2>&1
        $ORACLE_HOME/bin/sqlplus -s / as sysdba <<'SQL'
        set heading off feedback off verify off pagesize 0
        select name||':'||open_mode from v$pdbs where name!='PDB$SEED' and upper(open_mode) not like '%READ WRITE%';
        exit
        SQL
      register: pdb_not_open
      failed_when: false
      changed_when: false
      when: oracle_sid is defined and is_multitenant

    - name: Filter non-empty PDB results
      set_fact:
        pdb_not_open_filtered: "{{ pdb_not_open.stdout_lines | select('match', '^.+:.+$') | list }}"
      when: oracle_sid is defined and is_multitenant

    - name: Fail if any PDB is not OPEN
      fail:
        msg: "PDB(s) not OPEN: {{ pdb_not_open_filtered }}"
      when: oracle_sid is defined and is_multitenant and (pdb_not_open_filtered | length) > 0