comprehensive-app-config.tmpl

# Application Configuration
# Generated: {{ now() }}
# Instance ID: {{ uuid() }}

{# ============================================
   Service Configuration
   ============================================ #}
service:
  name: {{ get_env(name="APP_NAME", default="myapp") | upper }}
  version: {{ get_env(name="APP_VERSION", default="1.0.0") }}
  environment: {{ get_env(name="ENV", default="development") | upper }}

  # Unique identifiers
  instance_id: {{ uuid() }}
  deployment_id: {{ uuid() }}

{# ============================================
   Security & Authentication
   ============================================ #}
security:
  # Hash functions for integrity checks
  config_checksum: {{ md5(string="v1.0-config") }}
  license_hash: {{ sha256(string=get_env(name="LICENSE_KEY", default="trial-license")) }}

  # Generated secrets
  api_key: {{ random_string(length=32, charset="hex") }}
  secret_token: {{ random_string(length=64) }}
  csrf_token: {{ random_string(length=40, charset="hex") }}
  session_secret: {{ random_string(length=32, charset="alphanumeric") }}

  # Password hashing (example - use proper password hashing in production!)
  {% set admin_pwd = get_env(name="ADMIN_PASSWORD", default="changeme123") %}
  admin_password_hash: {{ sha512(string=admin_pwd) }}

{# ============================================
   Database Configuration
   ============================================ #}
database:
  # Filter all DB_* environment variables
  {% set db_vars = filter_env(pattern="DB_*") %}
  {% if db_vars | length > 0 %}
  # From environment:
  {% for var in db_vars %}
  {{ var.key | lower | replace(from="db_", to="") }}: {{ var.value }}
  {% endfor %}
  {% else %}
  # Default configuration:
  host: {{ get_env(name="DB_HOST", default="localhost") }}
  port: {{ get_env(name="DB_PORT", default="5432") }}
  name: {{ get_env(name="DB_NAME", default="myapp_db") }}
  user: {{ get_env(name="DB_USER", default="app_user") }}
  {% endif %}

  # Connection pool
  max_connections: {{ get_env(name="DB_MAX_CONNECTIONS", default="20") }}
  connection_id: {{ uuid() }}

{# ============================================
   Server Configuration
   ============================================ #}
server:
  {% set servers = filter_env(pattern="SERVER_*") %}
  {% if servers | length > 0 %}
  # Detected server configuration:
  {% for srv in servers %}
  {{ srv.key | lower | replace(from="server_", to="") }}: {{ srv.value }}
  {% endfor %}
  {% else %}
  # Default server configuration:
  host: {{ get_env(name="HOST", default="0.0.0.0") }}
  port: {{ get_env(name="PORT", default="8080") }}
  protocol: {{ get_env(name="PROTOCOL", default="http") }}
  {% endif %}

  # TLS/SSL
  {% set enable_tls = get_env(name="ENABLE_TLS", default="false") %}
  {% if enable_tls == "true" %}
  tls:
    enabled: true
    cert_path: {{ get_env(name="TLS_CERT_PATH", default="/etc/ssl/cert.pem") }}
    key_path: {{ get_env(name="TLS_KEY_PATH", default="/etc/ssl/key.pem") }}
  {% else %}
  tls:
    enabled: false
  {% endif %}

{# ============================================
   Logging Configuration
   ============================================ #}
logging:
  {% set env_type = get_env(name="ENV", default="development") %}
  {% if env_type == "production" %}
  level: ERROR
  format: json
  output: /var/log/app/production.log
  {% elif env_type == "staging" %}
  level: WARN
  format: json
  output: /var/log/app/staging.log
  {% else %}
  level: DEBUG
  format: text
  output: stdout
  {% endif %}

  # Log rotation ID
  rotation_id: {{ uuid() }}

{# ============================================
   Feature Flags
   ============================================ #}
features:
  {% set features = get_env(name="FEATURES", default="api,web,admin") | split(pat=",") %}
  enabled: [{% for feature in features %}"{{ feature | trim }}"{% if not loop.last %}, {% endif %}{% endfor %}]
  count: {{ features | length }}

  # Feature-specific settings
  {% for feature in features %}
  {{ feature | trim | slugify }}:
    enabled: true
    token: {{ random_string(length=16, charset="hex") }}
  {% endfor %}

{# ============================================
   External Services
   ============================================ #}
external_services:
  # All API_* environment variables
  {% set api_vars = filter_env(pattern="API_*") %}
  {% if api_vars | length > 0 %}
  apis:
  {% for api in api_vars %}
    {{ api.key | lower | replace(from="api_", to="") }}:
      url: {{ api.value }}
      key: {{ random_string(length=32, charset="hex") }}
      checksum: {{ md5(string=api.value) }}
  {% endfor %}
  {% else %}
  apis: []
  {% endif %}

{# ============================================
   Cache Configuration
   ============================================ #}
cache:
  {% set cache_type = get_env(name="CACHE_TYPE", default="memory") %}
  type: {{ cache_type }}
  ttl: {{ get_env(name="CACHE_TTL", default="3600") }}

  {% if cache_type == "redis" %}
  redis:
    host: {{ get_env(name="REDIS_HOST", default="localhost") }}
    port: {{ get_env(name="REDIS_PORT", default="6379") }}
    db: {{ get_env(name="REDIS_DB", default="0") }}
    password_hash: {{ sha256(string=get_env(name="REDIS_PASSWORD", default="")) }}
  {% endif %}

{# ============================================
   Monitoring & Metrics
   ============================================ #}
monitoring:
  enabled: {{ get_env(name="ENABLE_MONITORING", default="true") }}
  endpoint: {{ get_env(name="METRICS_ENDPOINT", default="/metrics") }}

  # Unique tracking IDs
  cluster_id: {{ uuid() }}
  node_id: {{ uuid() }}

  # Sample intervals (in seconds)
  {% set intervals = get_env(name="SAMPLE_INTERVALS", default="10,30,60") | split(pat=",") %}
  sample_intervals: [{% for interval in intervals %}{{ interval }}{% if not loop.last %}, {% endif %}{% endfor %}]

{# ============================================
   Recovery & Backup
   ============================================ #}
recovery:
  # Recovery codes (for 2FA backup)
  codes:
  {% for i in range(end=5) %}
    - {{ random_string(length=8, charset="uppercase") }}-{{ random_string(length=8, charset="uppercase") }}
  {% endfor %}

  # Backup encryption key
  backup_key: {{ random_string(length=64, charset="hex") }}
  backup_key_hash: {{ sha256(string=get_env(name="BACKUP_PASSPHRASE", default="default-passphrase")) }}

{# ============================================
   Metadata
   ============================================ #}
metadata:
  generated_at: {{ now() }}
  generated_by: tmpltool
  template_version: "2.0"
  config_hash: {{ sha1(string="comprehensive-config-v2.0") }}

  # All environment variables used
  environment_variables:
  {% set all_env = filter_env(pattern="*") %}
    total_count: {{ all_env | length }}
    app_vars: {{ filter_env(pattern="APP_*") | length }}
    db_vars: {{ filter_env(pattern="DB_*") | length }}
    server_vars: {{ filter_env(pattern="SERVER_*") | length }}