# Report Builder — Design Spec
**Date:** 2026-04-28  
**Status:** Approved

---

## Overview

A dedicated `/report` page (admin-only) where users configure a client-facing PDF report from scratch. The report is a professional business document — no app interface visible — downloadable as a `.pdf` file via `@react-pdf/renderer`.

---

## Page Structure

Two-column layout on desktop, stacked on mobile:
- **Left panel (form):** all configuration fields, grouped into sections
- **Right panel:** a static document preview mockup (not a live render — too expensive). Shows real text fields (title, client name, period) updating in real time, but charts and metrics are represented as grey placeholder shapes. Gives the user a sense of page structure and section order.
- **Footer bar:** "Generate PDF" button (triggers download), estimated page count

The route is `/report`, protected the same way `/settings` is (admin only, via `userRole === 'admin'` check in `App.tsx`).

---

## Form Sections

### 1. Client Info
| Field | Type | Notes |
|---|---|---|
| Report title | Text input | e.g. "Q1 2025 Visitor Performance" |
| Prepared for (company) | Text input | Shown in report header |
| Contact name | Text input | Optional — "Attention: …" line |
| Client logo | File upload (PNG/JPG/SVG, max 2MB) | Base64-encoded, embedded in PDF header |
| Accent color | Color picker | Defaults to HiHala blue `#2563eb`; used for section headers, borders |

### 2. Data Selection
| Field | Type | Notes |
|---|---|---|
| Period start / end | Date inputs | Defaults to current month |
| Museums | Multi-select (same component as dashboard) | Empty = all |
| Channels | Multi-select | Empty = all |
| VAT | Toggle: Excl / Incl | Defaults to Incl |
| Include comparison | Checkbox | Adds previous-year column to metrics table |

### 3. Content Sections (toggleable)
Each is a checkbox, all on by default:
- Executive summary (3–4 sentences auto-generated from numbers)
- Key metrics table (Revenue, Visitors, Tickets, Avg Rev/Visitor, optionally Pilgrim Capture Rate)
- Revenue & visitor trend chart
- Breakdown by museum
- Breakdown by channel
- Pilgrim capture rate section (only shown if toggle is on AND data exists)

### 4. Presentation
| Field | Type | Notes |
|---|---|---|
| Language | Toggle: EN / AR | Controls all PDF text and direction |
| Confidentiality footer | Select: Confidential / Internal / Public | Shown in page footer |
| Page orientation | Toggle: Portrait / Landscape | Portrait default |

---

## PDF Document Design

Built with `@react-pdf/renderer`. All layout is code — no DOM capture, no html2canvas.

**Page 1 — Cover**
- HiHala logo (top-left) + client logo (top-right)
- Large report title
- "Prepared for: [Company]" / "Attention: [Contact]"
- Period label (e.g. "January – March 2025")
- Generation date
- Accent color bar at bottom

**Page 2+ — Content pages**
- Shared header: small HiHala wordmark + report title + page number
- Sections in the order the user toggled them on
- Each section starts with a colored heading bar (accent color)
- Confidentiality level in page footer

**Chart rendering:**
Charts do not use the live Chart.js instances. Instead, `@react-pdf/renderer` draws simplified chart equivalents natively using SVG primitives (`<Svg>`, `<Rect>`, `<Path>`, `<Line>`) — no canvas capture needed. This produces crisp vector output at any print resolution.

Simplified charts to implement:
- **Trend line chart:** SVG polyline over a grid
- **Bar chart (museum/channel breakdown):** horizontal SVG bars with labels

**Executive summary generation:**
Computed from the metrics — a template string filled with actual numbers. Example (EN):
> "During [period], [selected museums] recorded [X] visitors and [Y SAR] in revenue, representing a [Z%] change versus the same period last year. The top-performing channel was [channel] with [N%] of total tickets."

The same template exists in Arabic (stored in the locale file alongside EN/AR strings already in the codebase). Falls back gracefully if comparison data is absent (omits the change sentence).

---

## Data Flow

```
/report page
  → user fills form
  → clicks "Generate PDF"
  → reads filtered data from already-loaded app state (passed as prop from App.tsx)
     OR re-fetches if needed (dataService.fetchData())
  → applies period + museum + channel filters client-side
  → computes metrics (reuses existing calculateMetrics())
  → passes computed values to <ReportDocument /> (react-pdf component)
  → pdf.download('hihala-report.pdf')
```

No new API endpoints required. All computation is client-side using existing `dataService` functions.

---

## File Structure

```
src/
  components/
    Report/
      index.tsx           — the /report page (form + preview layout)
      ReportForm.tsx      — the left-panel form
      ReportPreview.tsx   — the right-panel static mockup
      ReportDocument.tsx  — the @react-pdf/renderer document
      reportCharts.tsx    — SVG chart primitives for PDF
      reportHelpers.ts    — executive summary generator, data filters
```

---

## Navigation

- Desktop nav: gear icon already links to `/settings`; add a "Report" link (document icon) next to it, admin-only
- Mobile bottom nav: add Report icon between Comparison and Settings

---

## Dependencies

- `@react-pdf/renderer` — PDF generation
- No other new dependencies (reuses existing AltMultiSelect, form inputs, data service)

---

## Out of Scope

- Scheduled / emailed reports
- Saving report configurations
- Non-admin users generating reports
- Live chart preview in the right panel (static mockup only)