/* =============================================================================
 * D03_PlanAnalysis_UI_LayerLegend.ts
 * D03 바탕 겹 받은 자료 꼴 · 범례 줄 · 겹별 수(PLAN 569-2 · 581 · 584-1 · 584-3) — 켠 겹의 받은 범위 안 수 · 넓이.
 *   급경사 = 고른 범위(603)마다 % · ° · 비율(1 % 칸 수로 바로 셈).
 *   범례 칸 · 조각 겹 범례 = 공용 `A00_Common/map/map_legend`(624-2) · 여기는 받은 자료 줄만.
 *   범례 줄 셈 = 공용 `map_legend` `legendRows`(624-3) · 여기는 자료 꼴 · 겹별 수 · 부르는 곳 = `D03_PlanAnalysis_UI_Layers.ts`(받기 · 그리기).
 * ========================================================================== */

import type { PreparedLayer } from "../B04_PreProcess/B04_PreProcess_UI_MapRender";
import type {
  PlanForestRoads,
  PlanLandslideZones,
  PlanRaster,
  PlanSoils,
  PlanZones,
  PlanBand,
} from "./D03_PlanAnalysis_Api";
import { LINE_KEYS, type LineLayerKey } from "../A00_Common/map/map_layer_list";
import { bandRatios, type SlopeBand } from "../A00_Common/map/logic/map_slope_bands";

/** 범례 줄 = 공용(624-3 · B05 평면도 씀) — 옛 이름으로 다시 내놓음. */
export { legendRows } from "../A00_Common/map/map_legend";

/** 선 겹 — 그릴 선 · 받은 범위 안 가닥 · 길이 m. */
export interface PreparedLines {
  layer: PreparedLayer;
  count: number;
  length_m: number;
  /** 0차곡 — 쓴 지형 원천(624-4). */
  source?: string;
}
export type Prepared = Record<LineLayerKey, PreparedLines> & {
  contour: PreparedLayer;
  /** 세류 · 하천(소하천 · 지방하천 · 연결선). */
  stream: [PreparedLayer, PreparedLayer];
  cadastral: PreparedLayer;
  /** 전체 · 그중 소로 · 미분류(옛 임도 짐작 · 겹 걷음 · 수만 셈). */
  road: { all: PreparedLayer; small: PreparedLayer };
  /** 임도(업로드)(584-3). */
  forestRoadFile: { layer: PreparedLayer; info: PlanForestRoads };
  /** 급경사(603) — 값 그림 칸 · 고른 범위 · 칠한 그림(blob 주소) · 칠하기 ms. */
  slope: {
    raster: PlanRaster;
    image: HTMLImageElement;
    values: ImageData;
    bands: SlopeBand[];
    url: string;
    paintMs: number;
  };
  hillshade: { raster: PlanRaster; image: HTMLImageElement };
  landslide: { raster: PlanRaster; image: HTMLImageElement };
  /** 산사태취약지역(584-3) — 점(경위도) · 지번 맞는 필지 테두리. */
  landslideZones: { parcels: PreparedLayer; info: PlanLandslideZones };
  water: PreparedLayer;
  zones: { kinds: Map<string, PreparedLayer>; summary: PlanZones["summary"] };
  /** 토양형(코드 차례) → 지물 · 색 값. */
  soils: { kinds: Array<{ layer: PreparedLayer; color: string }>; summary: PlanSoils["summary"] };
  bands: { stream: PreparedLayer; road: PreparedLayer; info: { stream: PlanBand; road: PlanBand } };
  building: PreparedLayer;
  place: Array<{ lon: number; lat: number; name: string }>;
};

/** 검증 창구 — 겹별 수(지물 · 넓이 m² · 길이 m). */
export const layerCounts = (data: Partial<Prepared>): Record<string, number> => ({
  ...(data.building && { building: data.building.features.length }),
  ...(data.water && { water: data.water.features.length }),
  ...(data.road && {
    road: data.road.all.features.length,
    forestRoad: data.road.small.features.length,
  }),
  ...(data.forestRoadFile && {
    forestRoadFile: data.forestRoadFile.info.count,
    forestRoadFile_m: data.forestRoadFile.info.length_m,
    forestRoadFile_total: data.forestRoadFile.info.total,
  }),
  ...(data.landslideZones && {
    landslideZone_points: data.landslideZones.info.points.length,
    landslideZone_parcels: data.landslideZones.parcels.features.length,
    landslideZone_missing: data.landslideZones.info.missing.length,
  }),
  ...(data.place && { place: data.place.length }),
  ...(data.zones &&
    Object.fromEntries(
      Object.entries(data.zones.summary).flatMap(([kind, value]) => [
        [`zone_${kind}`, value.count],
        [`zone_${kind}_m2`, value.area_m2],
      ]),
    )),
  ...(data.soils &&
    Object.fromEntries(
      data.soils.summary.flatMap((soil) => [
        [`soil_${soil.code}`, soil.count],
        [`soil_${soil.code}_m2`, soil.area_m2],
      ]),
    )),
  ...(data.bands && {
    band_stream_m2: data.bands.info.stream.area_m2,
    band_road_m2: data.bands.info.road.area_m2,
  }),
  ...(data.hillshade && { hillshade_px: data.hillshade.image.naturalWidth }),
  ...(data.slope && {
    slope_px: data.slope.image.naturalWidth,
    slope_cells: (data.slope.raster.counts ?? []).reduce((sum, n) => sum + n, 0),
    slope_paint_ms: data.slope.paintMs,
    ...Object.fromEntries(
      bandRatios(data.slope.raster.counts ?? [], data.slope.bands).map((r, i) => [
        `slope_band_${i}`,
        r,
      ]),
    ),
  }),
  ...(data.landslide && { landslide_px: data.landslide.image.naturalWidth }),
  ...Object.fromEntries(
    LINE_KEYS.flatMap((key) => {
      const got = data[key];
      return got
        ? [
            [key, got.count],
            [`${key}_m`, got.length_m],
          ]
        : [];
    }),
  ),
});