# Database Configuration Schema
# Common schema for database settings (RocksDB, SurrealDB, PostgreSQL)

let DbMode = std.contract.custom
  (fun label value =>
    if value == "memory" || value == "embedded" || value == "server" then 'Ok value
    else std.contract.blame_with_message "database.mode must be 'memory', 'embedded', or 'server'" label)
  in

{
  DatabaseConfig = {
    # Deployment mode: memory (tests), embedded (solo/RocksDB), server (WebSocket)
    mode | DbMode | default = "embedded",
    # Database backend selection (filesystem, rocksdb, surrealdb_embedded, surrealdb_server, postgres)
    backend | String,

    # Local storage path (for filesystem and rocksdb)
    path | String | optional,

    # Connection string for remote databases (SurrealDB server, PostgreSQL)
    connection_string | String | optional,

    # Database name/namespace
    database | String | optional,

    # Namespace for multi-tenant databases
    namespace | String | optional,

    # Connection pool settings
    pool_size | Number | optional,

    # Connection timeout in milliseconds
    timeout | Number | optional,

    # Enable connection retry
    retry | Bool | default = true,

    # Max retry attempts
    max_retries | String | optional,

    # Credentials for authenticated databases
    credentials | {
      username | String | optional,
      password | String | optional,
    } | optional,
  },
}