<?php

declare(strict_types=1);

/**
 * RFC-WS-6 §4 (V1) — single source of truth for binding-target storage
 * shape. Consulted by `BindingTypeRegistry`, `AppendStrategyRequiresCollectionTarget`
 * publish guard, and (in session 2) by `FormBindingApplicator`.
 *
 * `type` values:
 *   - 'scalar'     — single column (string/int/datetime/email/...)
 *   - 'collection' — JSON array column or pivot relation with set semantics
 *   - 'relation'   — FK column resolving to another entity
 *
 * `php` values map to native PHP / cast types: 'string', 'int', 'bool',
 * 'date', 'datetime', 'array'. Validated by
 * BindingTypeRegistryConsistencyTest.
 *
 * `identity_key_eligible` permits a binding to set `is_identity_key=true`
 * on this attribute. PurposeGuardProvider's RequiresIdentityKeyBinding
 * may only target attributes that are eligible.
 */
return [
    'person' => [
        'email' => ['type' => 'scalar', 'php' => 'string', 'identity_key_eligible' => true],
        'first_name' => ['type' => 'scalar', 'php' => 'string', 'identity_key_eligible' => false],
        'last_name' => ['type' => 'scalar', 'php' => 'string', 'identity_key_eligible' => false],
        'date_of_birth' => ['type' => 'scalar', 'php' => 'date', 'identity_key_eligible' => false],
        'phone_number' => ['type' => 'scalar', 'php' => 'string', 'identity_key_eligible' => false],
        'dietary_preferences' => ['type' => 'collection', 'php' => 'array', 'identity_key_eligible' => false],
    ],
    'artist' => [
        'email' => ['type' => 'scalar', 'php' => 'string', 'identity_key_eligible' => true],
        'stage_name' => ['type' => 'scalar', 'php' => 'string', 'identity_key_eligible' => false],
        'tech_rider' => ['type' => 'scalar', 'php' => 'string', 'identity_key_eligible' => false],
        'hospitality_rider' => ['type' => 'scalar', 'php' => 'string', 'identity_key_eligible' => false],
    ],
    'company' => [
        'name' => ['type' => 'scalar', 'php' => 'string', 'identity_key_eligible' => true],
        'email' => ['type' => 'scalar', 'php' => 'string', 'identity_key_eligible' => true],
        'kvk_number' => ['type' => 'scalar', 'php' => 'string', 'identity_key_eligible' => true],
        'phone_number' => ['type' => 'scalar', 'php' => 'string', 'identity_key_eligible' => false],
    ],
    'user' => [
        'email' => ['type' => 'scalar', 'php' => 'string', 'identity_key_eligible' => true],
        'first_name' => ['type' => 'scalar', 'php' => 'string', 'identity_key_eligible' => false],
        'last_name' => ['type' => 'scalar', 'php' => 'string', 'identity_key_eligible' => false],
    ],
];