Madhura68
07b3cf6822
Pure afleidingslaag die de verspreide schermstaat-derivatie van de Product Backlog page consolideert tot één testbaar ScreenState-model. Nog geen consumers — die volgen in T-1035/T-1036. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
33 lines
1.4 KiB
TypeScript
33 lines
1.4 KiB
TypeScript
// Expliciete schermstaat voor de Product Backlog page.
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//
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// Consolideert de vandaag verspreide schermstaat-afleiding (page.tsx,
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// sprint-switcher.tsx, new-sprint-trigger.tsx, save-sprint-button.tsx) tot één
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// pure, testbare functie. Zie docs/architecture/product-backlog-workflow.md,
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// sectie "To-be: expliciete state machine".
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//
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// PRODUCT_NOT_ACTIVE en DEMO_MODE blijven bewust BUITEN ScreenState — het zijn
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// cross-cutting gates, geen knopen in de state machine.
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export type ScreenState =
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| { kind: 'NO_SPRINT' }
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| { kind: 'DRAFT' }
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| { kind: 'ACTIVE'; building: boolean }
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| { kind: 'EDITING'; building: boolean }
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export interface ScreenStateInput {
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activeSprintItem: { id: string } | null // SSR-prop uit page.tsx
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buildingSprintIds: string[] // SSR-prop uit page.tsx
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hasPendingDraft: boolean // user-settings store
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pendingAdds: string[] // product-workspace store: sprintMembership.pending.adds
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pendingRemoves: string[] // product-workspace store: sprintMembership.pending.removes
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}
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export function deriveScreenState(i: ScreenStateInput): ScreenState {
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if (i.hasPendingDraft) return { kind: 'DRAFT' } // draft wint van alles
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if (i.activeSprintItem) {
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const building = i.buildingSprintIds.includes(i.activeSprintItem.id)
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const dirty = i.pendingAdds.length > 0 || i.pendingRemoves.length > 0
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return dirty ? { kind: 'EDITING', building } : { kind: 'ACTIVE', building }
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}
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return { kind: 'NO_SPRINT' }
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}
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