import Config

# config/runtime.exs is executed for all environments, including
# during releases. It is executed after compilation and before the
# system starts, so it is typically used to load production configuration
# and secrets from environment variables or elsewhere. Do not define
# any compile-time configuration in here, as it won't be applied.
# The block below contains prod specific runtime configuration.

# ## Using releases
#
# If you use `mix release`, you need to explicitly enable the server
# by passing the PHX_SERVER=true when you start it:
#
#     PHX_SERVER=true bin/aprsme start
#
# Alternatively, you can use `mix phx.gen.release` to generate a `bin/server`
# script that automatically sets the env var above.
# Always start the server in production/docker environments
if System.get_env("PHX_SERVER") || config_env() == :prod do
  config :aprsme, AprsmeWeb.Endpoint, server: true
end

if config_env() == :prod do
  database_url =
    System.get_env("DATABASE_URL") ||
      raise """
      environment variable DATABASE_URL is missing.
      For example: ecto://USER:PASS@HOST/DATABASE
      """

  maybe_ipv6 = if System.get_env("ECTO_IPV6") in ~w(true 1), do: [:inet6], else: []

  # The secret key base is used to sign/encrypt cookies and other secrets.
  # A default value is used in config/dev.exs and config/test.exs but you
  # want to use a different value for prod and you most likely don't want
  # to check this value into version control, so we use an environment
  # variable instead.
  secret_key_base =
    System.get_env("SECRET_KEY_BASE") ||
      raise """
      environment variable SECRET_KEY_BASE is missing.
      You can generate one by calling: mix phx.gen.secret
      """

  host = System.get_env("PHX_HOST") || "example.com"
  port = String.to_integer(System.get_env("PORT") || "4000")

  # Configure clustering based on environment
  cluster_enabled = System.get_env("CLUSTER_ENABLED", "false") == "true"

  # Parse SSL configuration from environment
  ssl_enabled = System.get_env("DATABASE_SSL", "false") == "true"
  ssl_verify = System.get_env("DATABASE_SSL_VERIFY", "true") == "true"

  ssl_opts =
    if ssl_enabled do
      if ssl_verify do
        [ssl: true]
      else
        [ssl: true, ssl_opts: [verify: :verify_none]]
      end
    else
      []
    end

  # ## Configuring the mailer
  #
  # Configure Resend for email delivery
  config :aprsme, Aprsme.Mailer,
    adapter: Resend.Swoosh.Adapter,
    api_key: System.get_env("RESEND_API_KEY")

  config :aprsme,
         Aprsme.Repo,
         Keyword.merge(
           [
             url: database_url,
             # Increased pool size for better concurrency (was 25)
             pool_size: String.to_integer(System.get_env("POOL_SIZE") || "45"),
             # Increased timeout for ARM system under load
             pool_timeout: String.to_integer(System.get_env("POOL_TIMEOUT") || "10000"),
             # Match PostgreSQL statement timeout capabilities
             timeout: String.to_integer(System.get_env("DB_TIMEOUT") || "30000"),
             socket_options:
               maybe_ipv6 ++
                 [
                   # TCP optimizations for better connection handling
                   keepalive: true,
                   nodelay: true,
                   recbuf: 8192,
                   sndbuf: 8192
                 ],
             types: Aprsme.PostgresTypes,
             # Reduced queue target for faster response
             queue_target: 100,
             # Check queue more frequently
             queue_interval: 1_000,
             # Optimize for unnamed prepared statements (better for dynamic queries)
             prepare: :unnamed,
             # Connection parameters to leverage PostgreSQL settings
             # Note: When using PgBouncer, only certain parameters are supported
             parameters: [
               # Application name for monitoring
               application_name: "aprsme"
             ]
           ],
           ssl_opts
         )

  config :aprsme, AprsmeWeb.Endpoint,
    url: [host: host, port: 443, scheme: "https"],
    http: [
      # Bind on all IPv4 interfaces for better container compatibility
      # Use {0, 0, 0, 0} for IPv4 or {0, 0, 0, 0, 0, 0, 0, 0} for IPv6
      # See the documentation on https://hexdocs.pm/plug_cowboy/Plug.Cowboy.html
      # for details about using IPv6 vs IPv4 and loopback vs public addresses.
      ip: {0, 0, 0, 0},
      port: port
    ],
    secret_key_base: secret_key_base,
    server: true,
    check_origin: [
      "https://#{host}",
      "http://10.0.19.221",
      "http://10.0.19.222:33897",
      "https://aprs.me",
      "https://www.aprs.me",
      "https://www.openstreetmap.org",
      "https://tile.openstreetmap.org",
      "https://static.cloudflareinsights.com"
    ]

  config :aprsme, :cluster_enabled, cluster_enabled

  # Optional: Set the default "from" email address
  config :aprsme,
    default_from_email: "w5isp@aprs.me"

  config :aprsme,
    ecto_repos: [Aprsme.Repo],
    aprs_is_server: System.get_env("APRS_HOST") || System.get_env("APRS_SERVER", "dallas.aprs2.net"),
    aprs_is_port: String.to_integer(System.get_env("APRS_PORT") || "14580"),
    aprs_is_default_filter: System.get_env("APRS_FILTER"),
    aprs_is_login_id: System.get_env("APRS_CALLSIGN"),
    aprs_is_password: System.get_env("APRS_PASSWORD") || System.get_env("APRS_PASSCODE"),
    # Packet retention period in days (default: 7 days)
    packet_retention_days: String.to_integer(System.get_env("PACKET_RETENTION_DAYS") || "7"),
    env: :prod

  # Configure Hammer for production environment
  config :hammer,
    backend: {Hammer.Backend.ETS, [expiry_ms: 60_000 * 60 * 4, cleanup_interval_ms: 60_000 * 10]}

  # Configure libcluster topology based on environment
  if cluster_enabled do
    # Use DNS strategy with headless service for node discovery
    config :libcluster,
      topologies: [
        k8s: [
          strategy: Cluster.Strategy.Kubernetes.DNS,
          config: [
            service: "aprs-headless.aprs.svc.cluster.local",
            application_name: "aprsme",
            polling_interval: 5_000
          ]
        ]
      ]
  else
    # Keep existing Dokku configuration for non-Kubernetes deployments
    config :libcluster,
      topologies: [
        dokku: [
          strategy: Cluster.Strategy.Gossip,
          config: [
            port: 45_892,
            if_addr: "0.0.0.0",
            multicast_addr: "230.1.1.1",
            multicast_ttl: 1
          ]
        ]
      ]
  end

  #
  # For this example you need include a HTTP client required by Swoosh API client.
  # Swoosh supports Hackney, Finch, and Req out of the box:
  #
  #     config :swoosh, :api_client, Swoosh.ApiClient.Hackney
  #
  # See https://hexdocs.pm/swoosh/Swoosh.html#module-installation for details.
end