110 lines
7.0 KiB
TypeScript
110 lines
7.0 KiB
TypeScript
'use client';
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import type { ReactElement } from 'react';
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import {
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parseMovementExpression, MOVEMENT_EXPRESSION_MAX_DEPTH, MOVEMENT_EXPRESSION_MAX_LEAVES,
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type MovementExpression,
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} from '@/game/movement-expression-promises';
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import { Button } from './ui/button';
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import { Input } from './ui/input';
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type TerritoryChoice = { id: string; name: string };
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export function movementExpressionInputError(value: unknown): string | null {
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try { parseMovementExpression(value); return null; }
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catch (error) { return error instanceof Error ? error.message : 'Choose a valid ground-movement expression.'; }
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}
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// Structural edits preserve repairable destination and numeric drafts. The
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// detached valid placeholders are used only to check tree shape and limits.
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const structuralDraft = (node: MovementExpression): MovementExpression => node.kind === 'move'
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? { ...node, territory: 'carthag', minimum: 1 }
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: { ...node, terms: node.terms.map(structuralDraft) };
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const inputSize = (node: MovementExpression): { leaves: number; depth: number } => {
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if (node.kind === 'move') return { leaves: 1, depth: 0 };
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const sizes = node.terms.map(inputSize);
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return { leaves: sizes.reduce((sum, child) => sum + child.leaves, 0), depth: 1 + Math.max(0, ...sizes.map(child => child.depth)) };
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};
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/** Hook-free controlled tree. The server decides future route feasibility. */
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export function MovementExpressionFields({ value, territories, disabled, onChange }: {
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value: MovementExpression;
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territories: readonly TerritoryChoice[];
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disabled: boolean;
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onChange: (expression: MovementExpression) => void;
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}) {
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const newLeaf = (): MovementExpression => ({ kind: 'move', territory: territories[0]?.id ?? 'carthag', minimum: 1 });
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const size = inputSize(value), error = movementExpressionInputError(value);
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const commit = (next: MovementExpression) => {
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if (!disabled && !movementExpressionInputError(structuralDraft(next))) onChange(next);
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};
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const render = (node: MovementExpression, path: string, replace: (next: MovementExpression) => MovementExpression,
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remove?: () => MovementExpression): ReactElement => {
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const id = `truth-movement-expression-${path}`;
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const allowed = (next: MovementExpression) => !disabled && !movementExpressionInputError(structuralDraft(replace(next)));
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const change = (next: MovementExpression) => commit(replace(next));
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const wrap = (kind: 'and' | 'or'): MovementExpression => ({ kind, terms: [node, newLeaf()] });
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return <fieldset key={path} data-movement-expression-path={path} className="grid min-w-0 gap-2 p-2">
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<legend>{node.kind === 'move' ? `Movement condition ${path}` : `Movement group ${path} · ${node.kind.toUpperCase()}`}</legend>
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{node.kind === 'move' ? <>
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<label htmlFor={`${id}-territory`}>Ground-movement destination</label>
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<select id={`${id}-territory`} value={territories.some(destination => destination.id === node.territory) ? node.territory : ''}
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disabled={disabled} aria-invalid={!territories.some(destination => destination.id === node.territory)}
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onChange={event => change({ ...node, territory: event.currentTarget.value })}>
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<option value="">Choose a printed Arrakis territory</option>
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{territories.map(destination => <option key={destination.id} value={destination.id}>{destination.name}</option>)}
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</select>
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<label htmlFor={`${id}-minimum`}>Minimum physical forces in one ground move</label>
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<Input id={`${id}-minimum`} type="number" min={1} max={20} step={1} required disabled={disabled}
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value={Number.isNaN(node.minimum) ? '' : node.minimum} aria-invalid={!!movementExpressionInputError(node)}
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onChange={event => change({ ...node, minimum: event.currentTarget.valueAsNumber })} />
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</> : <>
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<label htmlFor={`${id}-meaning`}>Movement group {path} meaning</label>
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<select id={`${id}-meaning`} value={node.kind} disabled={disabled} onChange={event => {
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const kind = event.currentTarget.value;
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if (kind === 'and' || kind === 'or') change({ ...node, kind });
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}}>
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<option value="and">All conditions · AND</option>
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<option value="or">At least one condition · OR</option>
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</select>
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{node.terms.map((term, index) => render(term, `${path}.${index + 1}`,
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next => replace({ ...node, terms: node.terms.map((old, i) => i === index ? next : old) }),
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() => {
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const terms = node.terms.filter((_, i) => i !== index);
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return replace(terms.length === 1 ? terms[0] : { ...node, terms });
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}))}
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<div className="flex flex-wrap gap-2">
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<Button type="button" data-movement-expression-control={`add-${path}`}
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disabled={!allowed({ ...node, terms: [...node.terms, newLeaf()] })}
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onClick={() => change({ ...node, terms: [...node.terms, newLeaf()] })}>Add movement condition</Button>
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{(['and', 'or'] as const).map(kind => {
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const next: MovementExpression = { ...node, terms: [...node.terms, { kind, terms: [newLeaf(), newLeaf()] }] };
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return <Button key={kind} type="button" data-movement-expression-control={`nested-${kind}-${path}`}
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disabled={!allowed(next)} onClick={() => change(next)}>Add nested {kind.toUpperCase()} group</Button>;
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})}
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</div>
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</>}
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<div className="flex flex-wrap gap-2">
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{(['and', 'or'] as const).map(kind => <Button key={kind} type="button" data-movement-expression-control={`${kind}-${path}`}
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disabled={!allowed(wrap(kind))} onClick={() => change(wrap(kind))}>Group with {kind.toUpperCase()}</Button>)}
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{remove && <Button type="button" data-movement-expression-control={`remove-${path}`} disabled={disabled}
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onClick={() => commit(remove())}>Remove {node.kind === 'move' ? 'condition' : 'group'}</Button>}
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</div>
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</fieldset>;
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};
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return <fieldset disabled={disabled} data-testid="movement-expression"
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className="grid min-w-0 gap-2 [&_select]:min-w-0 [&_select]:max-w-full [&_button]:max-w-full [&_button]:min-h-11 [&_button]:h-auto [&_button]:py-2 [&_button]:whitespace-normal">
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<legend>Ground-movement expression</legend>
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<p className="fine">
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AND requires every condition; OR requires at least one. No makes the whole expression false,
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not necessarily every condition. Legal alternatives remain available; the question does not pin a fixed branch.
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Each condition needs one future actual ground move after the answer, before your Movement turn ends this round.
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Smaller moves never add together; a shipment can prepare a move but does not fulfill a condition.
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</p>
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<p className="fine">App input limits: {MOVEMENT_EXPRESSION_MAX_LEAVES} conditions and {MOVEMENT_EXPRESSION_MAX_DEPTH} levels of grouping.
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Groups do not count as conditions. These are input limits, not additional printed rules.</p>
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<p className="fine">{size.leaves} / {MOVEMENT_EXPRESSION_MAX_LEAVES} conditions · {size.depth} / {MOVEMENT_EXPRESSION_MAX_DEPTH} levels of grouping</p>
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{error && <p role="alert">{error}</p>}
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{render(value, '1', next => next)}
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</fieldset>;
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}
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