# Copyright: (c) 2019, Andrew Klychkov (@Andersson007) <aaklychkov@mail.ru>
# GNU General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)

# Prepare for tests:
- name: postgresql_query - drop test table if exists
  become_user: "{{ pg_user }}"
  become: yes
  shell: psql postgres -U "{{ pg_user }}" -t -c "DROP TABLE IF EXISTS test_table;"
  ignore_errors: yes

# Create test_table:
- name: postgresql_query - create test table called test_table
  become_user: "{{ pg_user }}"
  become: yes
  shell: psql postgres -U "{{ pg_user }}" -t -c "CREATE TABLE test_table (id int, story text);"
  ignore_errors: yes

- name: postgresql_query - insert some data into test_table
  become_user: "{{ pg_user }}"
  become: yes
  shell: psql postgres -U "{{ pg_user }}" -t -c "INSERT INTO test_table (id, story) VALUES (1, 'first'), (2, 'second'), (3, 'third');"
  ignore_errors: yes

# Prepare SQL script:
- name: postgresql_query - remove SQL script if exists
  become_user: "{{ pg_user }}"
  become: yes
  file:
    path: '~{{ pg_user}}/test.sql'
    state: absent
  ignore_errors: yes

- name: postgresql_query - prepare SQL script
  become_user: "{{ pg_user }}"
  become: yes
  shell: 'echo "{{ item }}" >> ~{{ pg_user}}/test.sql'
  ignore_errors: yes
  with_items:
  - SELECT version();
  - SELECT story FROM test_table
  - WHERE id = %s;

##############
# Start tests:
#

# Run ANALYZE command:
- name: postgresql_query - analyze test_table
  become_user: "{{ pg_user }}"
  become: yes
  postgresql_query:
    login_user: "{{ pg_user }}"
    db: postgres
    query: ANALYZE test_table
  register: result
  ignore_errors: yes

- assert:
    that:
    - result.changed == true
    - result.query == 'ANALYZE test_table'
    - result.rowcount == 0
    - result.statusmessage == 'ANALYZE'
    - result.query_result == {}

# Run queries from SQL script:
- name: postgresql_query - run queries from SQL script
  become_user: "{{ pg_user }}"
  become: yes
  postgresql_query:
    login_user: "{{ pg_user }}"
    db: postgres
    path_to_script: '~{{ pg_user }}/test.sql'
    positional_args:
    - 1
  register: result
  ignore_errors: yes

- assert:
    that:
    - result.changed == false
    - result.query == 'SELECT version();\nSELECT story FROM test_table\nWHERE id = 1;\n'
    - result.rowcount == 1
    - result.statusmessage == 'SELECT 1' or result.statusmessage == 'SELECT'
    - result.query_result[0].story == 'first'

# Simple select query:
- name: postgresql_query - simple select query to test_table
  become_user: "{{ pg_user }}"
  become: yes
  postgresql_query:
    login_user: "{{ pg_user }}"
    db: postgres
    query: SELECT * FROM test_table
  register: result
  ignore_errors: yes

- assert:
    that:
    - result.changed == false
    - result.query == 'SELECT * FROM test_table'
    - result.rowcount == 3
    - result.statusmessage == 'SELECT 3' or result.statusmessage == 'SELECT'
    - result.query_result[0].id == 1
    - result.query_result[1].id == 2
    - result.query_result[2].id == 3
    - result.query_result[0].story == 'first'
    - result.query_result[1].story == 'second'
    - result.query_result[2].story == 'third'

# Select query with named_args:
- name: postgresql_query - select query with named args
  become_user: "{{ pg_user }}"
  become: yes
  postgresql_query:
    login_user: "{{ pg_user }}"
    db: postgres
    query: SELECT id FROM test_table WHERE id = %(id_val)s AND story = %(story_val)s
    named_args:
      id_val: 1
      story_val: first
  register: result
  ignore_errors: yes

- assert:
    that:
    - result.changed == false
    - result.query == "SELECT id FROM test_table WHERE id = 1 AND story = 'first'" or result.query == "SELECT id FROM test_table WHERE id = 1 AND story = E'first'"
    - result.rowcount == 1
    - result.statusmessage == 'SELECT 1' or result.statusmessage == 'SELECT'
    - result.query_result[0].id == 1

# Select query with positional arguments:
- name: postgresql_query - select query with positional arguments
  become_user: "{{ pg_user }}"
  become: yes
  postgresql_query:
    login_user: "{{ pg_user }}"
    db: postgres
    query: SELECT story FROM test_table WHERE id = %s AND story = %s
    positional_args:
    - 2
    - second
  register: result
  ignore_errors: yes

- assert:
    that:
    - result.changed == false
    - result.query == "SELECT story FROM test_table WHERE id = 2 AND story = 'second'" or result.query == "SELECT story FROM test_table WHERE id = 2 AND story = E'second'"
    - result.rowcount == 1
    - result.statusmessage == 'SELECT 1' or result.statusmessage == 'SELECT'
    - result.query_result[0].story == 'second'

# Simple update query (positional_args and named args were checked by the previous tests):
- name: postgresql_query - simple update query
  become_user: "{{ pg_user }}"
  become: yes
  postgresql_query:
    login_user: "{{ pg_user }}"
    db: postgres
    query: UPDATE test_table SET story = 'new' WHERE id = 3
  register: result
  ignore_errors: yes

- assert:
    that:
    - result.changed == true
    - result.query == "UPDATE test_table SET story = 'new' WHERE id = 3"
    - result.rowcount == 1
    - result.statusmessage == 'UPDATE 1'
    - result.query_result == {}

# Try to update not existing row:
- name: postgresql_query - try to update not existing row
  become_user: "{{ pg_user }}"
  become: yes
  postgresql_query:
    login_user: "{{ pg_user }}"
    db: postgres
    query: UPDATE test_table SET story = 'new' WHERE id = 100
  register: result
  ignore_errors: yes

- assert:
    that:
    - result.changed == false
    - result.query == "UPDATE test_table SET story = 'new' WHERE id = 100"
    - result.rowcount == 0
    - result.statusmessage == 'UPDATE 0'
    - result.query_result == {}

# Simple insert query positional_args:
- name: postgresql_query - insert query
  become_user: "{{ pg_user }}"
  become: yes
  postgresql_query:
    login_user: "{{ pg_user }}"
    db: postgres
    query: INSERT INTO test_table (id, story) VALUES (%s, %s)
    positional_args:
    - 4
    - fourth
  register: result
  ignore_errors: yes

- assert:
    that:
    - result.changed == true
    - result.query == "INSERT INTO test_table (id, story) VALUES (4, 'fourth')" or result.query == "INSERT INTO test_table (id, story) VALUES (4, E'fourth')"
    - result.rowcount == 1
    - result.statusmessage == 'INSERT 0 1'
    - result.query_result == {}

# Truncate table:
- name: postgresql_query - truncate test_table
  become_user: "{{ pg_user }}"
  become: yes
  postgresql_query:
    login_user: "{{ pg_user }}"
    db: postgres
    query: TRUNCATE test_table
  register: result
  ignore_errors: yes

- assert:
    that:
    - result.changed == true
    - result.query == "TRUNCATE test_table"
    - result.rowcount == 0
    - result.statusmessage == 'TRUNCATE TABLE'
    - result.query_result == {}

# Try DDL query:
- name: postgresql_query - alter test_table
  become_user: "{{ pg_user }}"
  become: yes
  postgresql_query:
    login_user: "{{ pg_user }}"
    db: postgres
    query: ALTER TABLE test_table ADD COLUMN foo int
  register: result
  ignore_errors: yes

- assert:
    that:
    - result.changed == true
    - result.query == "ALTER TABLE test_table ADD COLUMN foo int"
    - result.rowcount == 0
    - result.statusmessage == 'ALTER TABLE'