# Handoff — `dashboard_api` endpoint contract: INC operations dashboard

For the **dashboard_api** repo (tracksolid stack). This endpoint is a thin wrapper
over `reporting.fn_inc_dashboard(...)` in `tracksolid_db` (built by `fleettickets`,
migration 09). It powers the FleetOps **live INC map** (open tickets + windowed
closed overlay + metric cards). Vehicle positions/routes come from **FleetNow** and
are overlaid by the SPA — **not** part of this endpoint.

## Endpoint

```
GET /webhook/inc-dashboard
```

Mirror the existing `GET /webhook/tickets` (→ `reporting.fn_tickets_for_map`) for
auth, connection (role `dashboard_ro`), and JSON passthrough conventions.

### Query parameters

| Param | Type | Required | Default | Maps to | Notes |
|---|---|---|---|---|---|
| `cluster` | string | no | — (all) | `p_cluster` | Exact match on `tickets.inc.cluster` (UPPERCASE, e.g. `MUIGAI INN`). Empty = no filter. |
| `status` | string | no | — (all) | `p_status` | Exact `normalized_status` (UPPERCASE, e.g. `ACCEPTED`, `CLOSED COMPLETE`). |
| `window` | enum | no | `today` | `p_window` | One of `today` \| `week` \| `month` \| `custom`. Calendar **EAT** (week = ISO Mon-start). |
| `from` | ISO-8601 timestamp | only if `window=custom` | — | `p_from` | Inclusive start. Send with offset/Z (absolute time). |
| `to` | ISO-8601 timestamp | only if `window=custom` | — | `p_to` | Exclusive end. |

**Resolution rules (match the SQL):**
- If **either** `from` or `to` is present, the function treats it as a **custom**
  window (the `window` value is overridden to `custom`); a missing side becomes
  ±infinity. So for a bounded custom range, **send both** `from` and `to`.
- Otherwise the preset (`today`/`week`/`month`) is resolved to EAT calendar bounds
  **inside the function** — the API does not compute dates.

**Validation (API side):**
- `window` ∉ {today,week,month,custom} → `400`.
- `window=custom` with neither `from` nor `to` → `400` (would mean "all time").
- `from`/`to` unpar, or `from >= to` → `400`.
- `cluster`/`status` are passed through verbatim (unknown values simply return empty
  sets — not an error).

### Implementation (one call, passthrough)

```sql
SELECT reporting.fn_inc_dashboard(
  p_cluster := $1,   -- text | null
  p_status  := $2,   -- text | null
  p_window  := $3,   -- text  (default 'today')
  p_from    := $4,   -- timestamptz | null
  p_to      := $5    -- timestamptz | null
);
```
Return the resulting `jsonb` **as the HTTP body unchanged** (`Content-Type:
application/json`). No reshaping needed.

## Response (200) — shape

```jsonc
{
  "window":  { "from": "2026-06-16T00:00:00+03:00", "to": "...", "preset": "today" },

  "open": {                       // ALL currently-open tickets (live; NOT time-filtered)
    "type": "FeatureCollection",
    "features": [
      { "type": "Feature",
        "geometry": { "type": "Point", "coordinates": [lng, lat] },
        "properties": {
          "ticket_id": "WOT…", "normalized_status": "ACCEPTED",
          "cluster": "MUIGAI INN", "region": "nairobi", "location_name": "…",
          "assigned_team": "…", "owner": "…", "geo_source": "location|cluster|feed",
          "sla_state": "breached|at_risk|ok|unknown", "hours_open": 107.7
        } }
    ]
  },

  "closed": {                     // closed_at within the selected window
    "type": "FeatureCollection",
    "features": [
      { "type": "Feature",
        "geometry": { "type": "Point", "coordinates": [lng, lat] },
        "properties": {
          "ticket_id": "WOT…", "normalized_status": "CLOSED COMPLETE",
          "cluster": "…", "region": "…", "location_name": "…",
          "assigned_team": "…", "owner": "…", "geo_source": "…",
          "closed_at": "2026-06-15T13:04:52+00:00", "mttr": 1467, "sla_status": "Compliant|Breached"
        } }
    ]
  },

  "metrics": {
    "open_now": 30,
    "closed_in_window": 2605,
    "sla": {
      "open":   { "breached": 30, "at_risk": 0, "ok": 0, "unknown": 0 },
      "closed": { "compliant": 1718, "breached": 887 }
    },
    "by_status":  { "ACCEPTED": 20, "PENDING DISPATCH": 7, "CLOSED COMPLETE": 2400, … },
    "by_cluster": { "MUIGAI INN": 82, "JUJA": …, "(none)": 1, … },
    "closure_rate": { "per_day_avg": 86.83, "series": [ { "day": "2026-06-15", "count": 13 }, … ] },
    "avg_mttr_min": 1467.1
  },

  "freshness": { "inc": { "export_type": "full", "exported_at": "…", "records_ingested": 21301, "ingested_at": "…" } }
}
```

### Field semantics the SPA must know

- **`open` is always the full open set** (matching cluster/status); the time window
  does **not** filter it. **`closed`** is only the overlay for the window.
- **`mttr` is in MINUTES** (null until closed). `hours_open` is hours.
- **`sla_state`** (open) is **derived** (`now − created_at_service`, falling back to
  `first_seen_at`); `unknown` = no creation clock. **`sla_status`** (closed) is the
  source field (`Compliant`/`Breached`).
- **Map vs metrics gap:** `features` include only geocoded rows (`geom` present);
  metric **counts include all matching rows** (a few tickets have no `geom`, e.g.
  null cluster). So `open.features.length` may be `< metrics.open_now`.
- **`geo_source`** indicates precision: `location` (street-level) > `cluster`
  (centroid; many tickets share a point) > `feed` > none.
- **Coordinates** are GeoJSON `[lng, lat]` (x, y) order.
- **`window.from/to`** are absolute timestamps; presets are EAT calendar ranges.

## Examples

```bash
# today (default)
curl '.../webhook/inc-dashboard'

# this month, one cluster
curl '.../webhook/inc-dashboard?window=month&cluster=MUIGAI%20INN'

# open ACCEPTED tickets (today window irrelevant to the open layer)
curl '.../webhook/inc-dashboard?status=ACCEPTED'

# custom range (send BOTH from & to; absolute times)
curl '.../webhook/inc-dashboard?from=2026-06-09T00:00:00%2B03:00&to=2026-06-16T00:00:00%2B03:00'
```

## Operational notes

- **Caching:** the open layer + freshness change at most **hourly** (the ingest
  cadence); closed/metrics change only when filters change. A short cache
  (≈60 s) keyed on the full query string is safe; or `Cache-Control: no-store` if
  you prefer always-fresh — the function is cheap (indexed).
- **Performance:** indexed (`ix_inc_closed_at`, `ix_inc_cluster_col`,
  `ix_inc_norm_status_col`, `ix_inc_geom`); month-window payloads are a few thousand
  closed features — fine for one request. If payloads get large, consider a
  `metrics-only` flag later (not in scope now).
- **Auth:** same as `/webhook/tickets`. The function is granted to `dashboard_ro`.
- **Timezone:** all preset math is EAT inside the DB; the API passes `from`/`to`
  through as absolute `timestamptz`.

## Out of scope (other work)

- FleetNow vehicle positions/routes overlay — SPA + FleetNow.
- Open-backlog-over-time / observed transitions — needs the `fleettickets` history
  capture (not built yet); this endpoint reports current state + closure events.