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

export const monthGridMorfo = {
	name: 'MonthGrid',
	kebab: 'month-grid',
	scope: ['soma', 'sema', 'eidos'],
	// Pack shipped 2026-07-07 (checkpoint S3b — calendar-family coherence).
	expression: 'pack',
	apg: 'https://www.w3.org/WAI/ARIA/apg/patterns/grid/',
	texts: {
		label: '#?components.month-grid.label|Month grid',
		prevYear: '#?common.month-grid.prev-year|Previous year',
		nextYear: '#?common.month-grid.next-year|Next year'
	},
	events: [
		{
			name: 'commit-set',
			semantic: {
				family: 'commit',
				verb: 'set',
				target: v.partRef('cell'),
				intent: 'affirm',
				sequence: 'post'
			}
		},
		{
			// Paginar al año anterior/siguiente. Per book cap. 27 §5,
			// `shift.navigate` cubre "Lista → detalle. Página A → página B" —
			// el usuario está en otro tramo del eje temporal. La variante
			// `step` mantiene la huella semántica de paso discreto.
			name: 'shift-navigate-step',
			semantic: {
				family: 'shift',
				verb: 'navigate',
				// Target is the `grid`, not the `provider`: the grid is the SUBJECT
				// of the reframing — it is the cell surface that swaps to another
				// year, while the header stays put and the arrow is only the
				// instrument. The provider would drag the header into the stamp.
				// Aligned with the rest of the calendar family so the
				// directional `shift` signature slides the grid in all four alike.
				target: v.partRef('grid'),
				sequence: 'post'
			}
		}
	],
	direction: {},
	focus: {
		kind: 'roving',
		parts: ['cell'],
		// One tabbable month cell (provider: `focused ? 0 : -1`, documented
		// there as "roving tabindex"), arrows move the stop on the month grid.
		orientation: 'grid',
		executor: {
			custom:
				'2D month-grid traversal (rows × columns of months) — executed by the shared 2D grid-walk primitive (soma/keyboard/grid-walk), not the 1D RovingFocusGroup'
		}
	},

	parts: [
		{
			name: 'Provider',
			kebab: 'provider',
			archetype: 'provider',
			kind: 'public',
			defaultElement: 'div',
			// No role — removed 2026-07-07 (checkpoint C4): the inner
			// `role='grid'` carries the pattern (family-wide decision).
			optional: false,
			data: [
				{ attr: 'data-readonly', severity: 'optional' },
				{ attr: 'data-disabled', severity: 'optional' }
			],
			aria: [
				{ attr: 'aria-label', value: v.propRef('ariaLabel'), severity: 'recommended' },
				// Provider emitted `boolToStr(disabled)` (always "true"/"false"), so
				// `propRef` + `ariaBoolean` lets the render bag emit the same string.
				{
					attr: 'aria-disabled',
					value: v.propRef('disabled'),
					severity: 'optional',
					ariaBoolean: true
				}
			],
			keyboard: [
				{ key: 'ArrowRight', action: 'next-month' },
				{ key: 'ArrowLeft', action: 'prev-month' },
				{ key: 'ArrowDown', action: 'next-row' },
				{ key: 'ArrowUp', action: 'prev-row' },
				{ key: 'PageUp', action: 'prev-year' },
				{ key: 'PageDown', action: 'next-year' },
				{ key: 'Home', action: 'first-month' },
				{ key: 'End', action: 'last-month' },
				{ key: 'Enter', action: 'select' },
				{ key: ' ', action: 'select' }
			]
		},
		{
			name: 'Header',
			kebab: 'header',
			archetype: 'header',
			kind: 'public',
			defaultElement: 'div',
			optional: true,
			data: [],
			aria: []
		},
		{
			name: 'Heading',
			kebab: 'heading',
			archetype: 'header',
			kind: 'public',
			defaultElement: 'div',
			optional: true,
			data: [],
			aria: []
		},
		{
			name: 'PrevButton',
			kebab: 'prev-button',
			archetype: 'trigger',
			kind: 'public',
			defaultElement: 'button',
			role: 'button',
			optional: true,
			data: [{ attr: 'data-disabled', severity: 'optional' }],
			attrs: [{ attr: 'type', value: v.literal('button') }],
			aria: [
				{
					attr: 'aria-label',
					value: v.commonRef('month-grid.prev-year', 'Previous year'),
					severity: 'recommended'
				},
				// Provider emitted `boolToStr(disabled)` (always "true"/"false"), so
				// `propRef` + `ariaBoolean` lets the render bag emit the same string.
				{
					attr: 'aria-disabled',
					value: v.propRef('disabled'),
					severity: 'optional',
					ariaBoolean: true
				}
			]
		},
		{
			name: 'NextButton',
			kebab: 'next-button',
			archetype: 'trigger',
			kind: 'public',
			defaultElement: 'button',
			role: 'button',
			optional: true,
			data: [{ attr: 'data-disabled', severity: 'optional' }],
			attrs: [{ attr: 'type', value: v.literal('button') }],
			aria: [
				{
					attr: 'aria-label',
					value: v.commonRef('month-grid.next-year', 'Next year'),
					severity: 'recommended'
				},
				// Provider emitted `boolToStr(disabled)` (always "true"/"false"), so
				// `propRef` + `ariaBoolean` lets the render bag emit the same string.
				{
					attr: 'aria-disabled',
					value: v.propRef('disabled'),
					severity: 'optional',
					ariaBoolean: true
				}
			]
		},
		{
			name: 'Grid',
			kebab: 'grid',
			kind: 'public',
			defaultElement: 'div',
			role: 'grid',
			optional: false,
			data: [],
			aria: [
				{
					attr: 'aria-labelledby',
					value: v.partRef('heading'),
					condition: { when: 'part-present', part: 'heading' },
					severity: 'recommended'
				},
				// Provider emitted `boolToStr(...)` (always "true"/"false") for both;
				// `propRef` + `ariaBoolean` lets the render bag emit the same string.
				{
					attr: 'aria-readonly',
					value: v.propRef('readonly'),
					severity: 'optional',
					ariaBoolean: true
				},
				{
					attr: 'aria-disabled',
					value: v.propRef('disabled'),
					severity: 'optional',
					ariaBoolean: true
				}
			]
		},
		{
			name: 'Cell',
			kebab: 'cell',
			// No archetype: display gridcell container, not a menu `item` (the
			// inner month button owns the interaction styling).
			kind: 'public',
			defaultElement: 'button',
			role: 'gridcell',
			optional: false,
			data: [
				{ attr: 'data-value' },
				{ attr: 'data-selected', severity: 'optional' },
				{ attr: 'data-current', severity: 'optional' },
				{ attr: 'data-disabled', severity: 'optional' },
				{ attr: 'data-focused', severity: 'optional' }
			],
			aria: [
				// Provider emitted `boolToStr(...)` (always "true"/"false") for both;
				// `propRef` + `ariaBoolean` lets the render bag emit the same string.
				{
					attr: 'aria-selected',
					value: v.propRef('selected'),
					severity: 'optional',
					ariaBoolean: true
				},
				{
					attr: 'aria-disabled',
					value: v.propRef('disabled'),
					severity: 'optional',
					ariaBoolean: true
				}
			]
		}
	]
} as const satisfies Morfo;