# Document metadata
# Example YAML file demonstrating various syntax elements
---
name: YAML Example
version: 1.0.0
description: Example YAML file demonstrating various syntax elements
updated_at: 2024-02-20T15:00:00Z

# Scalar types
strings:
  simple: Hello World
  quoted: "Hello \"quoted\" World"
  literal: |
    This is a literal block
    that preserves newlines
    and can contain special chars: *&[]
  folded: >
    This is a folded block
    that will be rendered
    as a single line

numbers:
  integer: 42
  float: 3.14159
  scientific: 1.23e+4
  infinity: .inf
  not_a_number: .nan

dates:
  simple: 2024-02-20
  datetime: 2024-02-20T15:00:00Z
  canonical: 2024-02-20T15:00:00.000Z

booleans:
  true_values: [true, True, TRUE, yes, Yes, YES, on, On, ON]
  false_values: [false, False, FALSE, no, No, NO, off, Off, OFF]

# Complex types
arrays:
  - simple
  - items
  - [nested, array]
  - 
    - deeply
    - nested
    - array

# Mapping types
object:
  key1: value1
  key2: value2
  nested:
    key3: value3
    key4: value4

# Anchors and aliases
definitions: &defaults
  timeout: 30
  retries: 3
  enabled: true

production:
  <<: *defaults  # Merge defaults
  environment: production
  host: prod.example.com

staging:
  <<: *defaults
  environment: staging
  host: staging.example.com
  timeout: 60  # Override default

# Complex mapping
services:
  - name: web
    image: nginx:latest
    ports:
      - "80:80"
      - "443:443"
    environment:
      - NODE_ENV=production
      - DEBUG=false
    volumes:
      - type: bind
        source: /var/www
        target: /usr/share/nginx/html
    healthcheck:
      test: ["CMD", "curl", "-f", "http://localhost"]
      interval: 30s
      timeout: 10s
      retries: 3

  - name: database
    image: postgres:13
    environment:
      POSTGRES_USER: admin
      POSTGRES_PASSWORD: !vault |
        $ANSIBLE_VAULT;1.1;AES256
        31613262363135363132666363366363
    volumes:
      - data:/var/lib/postgresql/data

# Sets
unique_values: !!set
  ? item1
  ? item2
  ? item3

# Binary data
certificate: !!binary |
  R0lGODlhDAAMAIQAAP//9/X17unp5WZmZgAAAOf...

# Custom tags
datetime_obj: !!python/object:datetime.datetime
  year: 2024
  month: 2
  day: 20
  hour: 15
  minute: 0
  second: 0

# Explicit typing
explicit_strings: !!str 42
explicit_int: !!int "42"
explicit_float: !!float "3.14159"
explicit_bool: !!bool "yes"