import type { Morfo } from '../types';
import { v } from '../types';

/**
 * PasswordField — text input with masked value, visibility toggle and
 * CapsLock awareness. APG textbox pattern + ARIA Toggle Button for the
 * visibility trigger.
 *
 * Surface (consensus across Ark UI / Chakra v3 / Mantine / PrimeReact /
 * Ant Design — all dedicate a component for this):
 *
 *   <PasswordField bind:value bind:visible>
 *     <PasswordField.Input />
 *     <PasswordField.VisibilityTrigger />
 *     <PasswordField.CapsLockIndicator />
 *   </PasswordField>
 *
 * Distinctive UIX contribution: the `CapsLockIndicator` part fills a gap
 * present in 10/10 libraries surveyed — none warn the user when caps
 * lock is on while typing a password. Soma listens to keydown events,
 * reads `KeyboardEvent.getModifierState('CapsLock')`, and exposes the
 * boolean via `data-caps-active`.
 */
export const passwordFieldMorfo = {
	name: 'PasswordField',
	kebab: 'password-field',
	scope: ['soma', 'sema'],
	texts: {
		label: '#?components.password-field.label|Password',
		show: '#?components.password-field.show|Show password',
		hide: '#?components.password-field.hide|Hide password',
		'caps-warning': '#?components.password-field.caps-warning|Caps Lock is on'
	},
	apg: 'https://www.w3.org/WAI/ARIA/apg/patterns/textbox/',
	events: [
		{
			// Value committed (every keystroke).
			name: 'commit-input',
			semantic: {
				family: 'commit',
				verb: 'input',
				target: v.partRef('input'),
				intent: 'neutral',
				sequence: 'post'
			}
		},
		{
			// User pressed Enter — consumer-defined submit hook.
			name: 'commit-submit',
			semantic: {
				family: 'commit',
				verb: 'submit',
				target: v.partRef('input'),
				intent: 'neutral',
				sequence: 'post'
			}
		},
		{
			// Visibility toggled (mask ↔ plaintext).
			name: 'shift-toggle-visibility',
			semantic: {
				family: 'shift',
				verb: 'toggle',
				target: v.partRef('visibility-trigger'),
				sequence: 'post'
			}
		},
		{
			// Caps Lock state changed while the input is focused.
			name: 'shift-caps-state',
			semantic: {
				family: 'shift',
				verb: 'navigate',
				target: v.partRef('caps-lock-indicator'),
				sequence: 'post'
			}
		}
	],
	parts: [
		{
			name: 'Provider',
			kebab: 'provider',
			archetype: 'provider',
			kind: 'public',
			defaultElement: 'div',
			optional: false,
			data: [
				{ attr: 'data-disabled', value: v.propRef('disabled'), severity: 'optional' },
				{ attr: 'data-readonly', value: v.propRef('readonly'), severity: 'optional' },
				{ attr: 'data-required', value: v.propRef('required'), severity: 'optional' },
				{ attr: 'data-invalid', value: v.propRef('invalid'), severity: 'optional' },
				{ attr: 'data-focused', value: v.propRef('focused'), severity: 'optional' },
				{ attr: 'data-empty', value: v.propRef('empty'), severity: 'optional' },
				{ attr: 'data-visible', value: v.propRef('visible'), severity: 'optional' },
				{ attr: 'data-caps-active', value: v.propRef('capsActive'), severity: 'optional' }
			],
			aria: []
		},
		{
			name: 'Input',
			kebab: 'input',
			archetype: 'input',
			kind: 'public',
			defaultElement: 'input',
			role: 'textbox',
			optional: false,
			data: [
				{ attr: 'data-disabled', value: v.propRef('disabled'), severity: 'optional' },
				{ attr: 'data-readonly', value: v.propRef('readonly'), severity: 'optional' },
				{ attr: 'data-invalid', value: v.propRef('invalid'), severity: 'optional' }
			],
			aria: [
				{
					attr: 'aria-label',
					value: v.translationRef('#?components.password-field.label|Password'),
					severity: 'recommended'
				},
				{
					attr: 'aria-invalid',
					value: v.literal('true'),
					severity: 'optional',
					condition: { when: 'prop-truthy', prop: 'invalid' }
				},
				{
					attr: 'aria-required',
					value: v.literal('true'),
					severity: 'optional',
					condition: { when: 'prop-truthy', prop: 'required' }
				}
			],
			keyboard: [{ key: 'Enter', action: 'submit' }]
		},
		{
			name: 'VisibilityTrigger',
			kebab: 'visibility-trigger',
			archetype: 'trigger',
			kind: 'public',
			defaultElement: 'button',
			role: 'button',
			optional: true,
			data: [
				{ attr: 'data-visible', value: v.propRef('visible'), severity: 'optional' },
				{ attr: 'data-disabled', value: v.propRef('disabled'), severity: 'optional' }
			],
			aria: [
				{ attr: 'type', value: v.literal('button') },
				{
					// Toggle button pattern — pressed when password is visible.
					attr: 'aria-pressed',
					value: v.mapRef(v.propRef('visible'), { true: 'true', false: 'false' }),
					severity: 'recommended'
				},
				{
					// Label flips between "Show" and "Hide" based on state.
					attr: 'aria-label',
					value: v.translationRef('#?components.password-field.show|Show password'),
					severity: 'recommended'
				}
			]
		},
		{
			// Live region that announces Caps Lock state while the input has
			// focus. `aria-live="polite"` so it doesn't interrupt typing flow.
			name: 'CapsLockIndicator',
			kebab: 'caps-lock-indicator',
			archetype: 'indicator',
			kind: 'public',
			defaultElement: 'span',
			role: 'status',
			optional: true,
			data: [
				{ attr: 'data-active', value: v.propRef('capsActive'), severity: 'optional' }
			],
			aria: [{ attr: 'aria-live', value: v.literal('polite') }]
		},
		{
			// Composable strength meter — consumer provides a 0–4 score.
			// UIX does not bundle a strength algorithm (zxcvbn etc.) to stay
			// dependency-free; consumer wires whichever library they trust.
			name: 'StrengthMeter',
			kebab: 'strength-meter',
			archetype: 'indicator',
			kind: 'public',
			defaultElement: 'div',
			role: 'meter',
			optional: true,
			data: [{ attr: 'data-strength', value: v.propRef('strength'), severity: 'optional' }],
			aria: [
				{ attr: 'aria-valuemin', value: v.literal('0') },
				{ attr: 'aria-valuemax', value: v.literal('4') },
				{ attr: 'aria-valuenow', value: v.propRef('strength') }
			]
		}
	]
} as const satisfies Morfo;