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

export const toastMorfo = {
	name: 'Toast',
	kebab: 'toast',
	scope: ['soma', 'sema'],
	apg: 'https://www.w3.org/WAI/ARIA/apg/patterns/alert/',
	texts: {
		label: '#?components.toast.label|Toast'
	},
	events: [
		{
			name: 'present',
			semantic: {
				family: 'emerge',
				verb: 'present',
				target: v.partRef('item'),
				sequence: 'pre'
			}
		},
		{
			// Persistence: explicit `transient` even though the book §6.2
			// canon would imply `untilFix` / `untilAction` for `signal +
			// risk` / `signal + threat`. The Toast component owns its own
			// lifecycle via `Toast.Provider`'s auto-dismiss timer + user
			// dismiss; the `data-event-*` projection is a one-shot pulse
			// when the toast enters. Persistence of the toast surface
			// itself lives in `data-state` (open/closed) on the Item, not
			// in the signal projection.
			name: 'announce',
			semantic: {
				family: 'signal',
				verb: 'announce',
				target: v.partRef('item'),
				sequence: 'coincident',
				intent: {
					fromProp: 'intent',
					default: 'neutral',
					supported: INTENTS
				},
				persistence: 'transient'
			}
		},
		{
			name: 'dismiss',
			semantic: {
				family: 'emerge',
				verb: 'dismiss',
				target: v.partRef('item'),
				sequence: 'pre'
			}
		}
	],
	parts: [
		{
			name: 'Provider',
			kebab: 'provider',
			archetype: 'provider',
			kind: 'virtual',
			defaultElement: 'none',
			optional: false,
			data: [],
			aria: []
		},
		{
			name: 'Viewport',
			kebab: 'viewport',
			archetype: 'viewport',
			kind: 'public',
			defaultElement: 'div',
			role: 'region',
			optional: false,
			data: [],
			aria: [
				{
					attr: 'aria-label',
					value: v.propRef('label'),
					severity: 'recommended'
				},
				{ attr: 'aria-live', value: v.literal('polite') }
			]
		},
		{
			name: 'Item',
			kebab: 'item',
			archetype: 'item',
			kind: 'public',
			defaultElement: 'div',
			optional: false,
			states: ['open', 'closed'],
			data: [
				{ attr: 'data-state', values: ['open', 'closed'], value: v.stateRef('open') },
				{ attr: 'data-starting-style', severity: 'optional' },
				{ attr: 'data-ending-style', severity: 'optional' },
				{
					attr: 'data-intent',
					values: INTENTS,
					value: v.propRef('intent')
				},
				{ attr: 'data-loading', severity: 'optional', value: v.propRef('loading') },
				{
					attr: 'data-swipe',
					values: ['start', 'move', 'cancel', 'end'],
					severity: 'optional',
					value: v.propRef('swipeState')
				},
				{
					attr: 'data-swipe-direction',
					values: ['up', 'down', 'left', 'right'],
					value: v.propRef('swipeDirection')
				}
			],
			aria: [
				{
					attr: 'role',
					value: v.mapRef(v.propRef('intent'), {
						neutral: 'status',
						affirm: 'status',
						fulfill: 'status',
						risk: 'alert',
						threat: 'alert',
						// `loss` is a consummated negative consequence (no urgency
						// to interrupt) — `status` is the appropriate ARIA role.
						loss: 'status'
					})
				},
				{
					attr: 'aria-live',
					value: v.mapRef(v.propRef('intent'), {
						neutral: 'polite',
						affirm: 'polite',
						fulfill: 'polite',
						risk: 'assertive',
						threat: 'assertive',
						loss: 'polite'
					}),
					severity: 'recommended'
				},
				{ attr: 'aria-atomic', value: v.literal('true') },
				{
					attr: 'aria-labelledby',
					value: v.partRef('title'),
					condition: { when: 'part-present', part: 'title' },
					severity: 'recommended'
				},
				{
					attr: 'aria-describedby',
					value: v.partRef('description'),
					condition: { when: 'part-present', part: 'description' },
					severity: 'optional'
				}
			],
			keyboard: [{ key: 'Escape', action: 'close' }]
		},
		{
			name: 'Title',
			kebab: 'title',
			archetype: 'title',
			kind: 'public',
			defaultElement: 'div',
			optional: true,
			data: [],
			aria: []
		},
		{
			name: 'Description',
			kebab: 'description',
			archetype: 'description',
			kind: 'public',
			defaultElement: 'div',
			optional: true,
			data: [],
			aria: []
		},
		{
			/**
			 * Status disc — the leading-edge icon area whose color follows
			 * the Item's `data-intent`. Optional visual structural part:
			 * eidos's flat template ships one by default, but a consumer
			 * compounding the parts can omit it (the recipe's grid auto-
			 * collapses) or replace its contents.
			 */
			name: 'Status',
			kebab: 'status',
			archetype: 'indicator',
			kind: 'public',
			defaultElement: 'span',
			optional: true,
			data: [],
			aria: [{ attr: 'aria-hidden', value: v.literal('true') }]
		},
		{
			/**
			 * Main column — stack container for title + description + action.
			 * Pure layout part (no semantics, no states); declared so the
			 * recipe's `[data-toast-main]` selector is morfo-backed instead
			 * of an off-contract data-attr.
			 */
			name: 'Main',
			kebab: 'main',
			kind: 'public',
			defaultElement: 'div',
			optional: true,
			data: [],
			aria: []
		},
		{
			name: 'Action',
			kebab: 'action',
			archetype: 'action',
			kind: 'public',
			defaultElement: 'button',
			role: 'button',
			optional: true,
			data: [],
			aria: [
				{ attr: 'type', value: v.literal('button') },
				{ attr: 'aria-label', value: v.propRef('altText'), severity: 'recommended' }
			]
		},
		{
			name: 'Close',
			kebab: 'close',
			archetype: 'close',
			kind: 'public',
			defaultElement: 'button',
			role: 'button',
			optional: true,
			data: [],
			aria: [
				{ attr: 'type', value: v.literal('button') },
				{
					attr: 'aria-label',
					value: v.commonRef('buttons.close', 'Close'),
					severity: 'recommended'
				}
			]
		}
	]
} as const satisfies Morfo;