import { defineStore } from "pinia";
import { api } from "@/api/client";

export const useDatasetStore = defineStore("dataset", {
  state: () => ({
    busy: false,
    previewBusy: false,
    statusText: "Выберите .obj модель и нажмите «Сгенерировать».",
    count: 5,
    seed: 42,
    outputDir: "sonar_dataset",
    resolvedOutputDir: null,
    modelFile: null,
    modelFileName: "",
    objectScale: 1,
    beamCount: 45,
    lengthCount: 45,
    lastResult: null,
    selectedStem: null,
    previewPoints: [],
    previewStem: null,
    previewMeta: null,
    highlightClass: null,
    classLabels: { 0: "background", 1: "object" },
    classCounts: {},
    logLines: [],
  }),
  getters: {
    stats(state) {
      return state.lastResult?.stats || null;
    },
    written(state) {
      return state.lastResult?.written || [];
    },
    previewDir(state) {
      return state.resolvedOutputDir || state.outputDir || "sonar_dataset";
    },
    selectedScene(state) {
      const stem = state.selectedStem;
      if (!stem) return null;
      return (state.lastResult?.written || []).find((item) => item.stem === stem) || null;
    },
    canGenerate(state) {
      return !!state.modelFile && !state.busy;
    },
    classOptions(state) {
      const labels = state.classLabels || { 0: "background", 1: "object" };
      const counts = state.classCounts || {};
      const keys = Object.keys(labels).length
        ? Object.keys(labels)
        : Object.keys(counts);
      return keys
        .map((k) => Number(k))
        .sort((a, b) => a - b)
        .map((id) => ({
          id,
          label: labels[String(id)] || labels[id] || `class ${id}`,
          count: counts[String(id)] ?? counts[id] ?? 0,
        }));
    },
  },
  actions: {
    pushLog(line) {
      this.logLines.push(String(line));
      if (this.logLines.length > 200) {
        this.logLines = this.logLines.slice(-200);
      }
    },
    setHighlightClass(value) {
      if (value === null || value === undefined || value === "" || value === "all") {
        this.highlightClass = null;
        return;
      }
      this.highlightClass = Number(value);
    },
    applyPreviewPayload(result, writtenMeta = null) {
      this.previewStem = result.stem;
      this.previewPoints = result.points || [];
      this.classCounts = result.classCounts || {};
      if (result.classLabels) {
        this.classLabels = result.classLabels;
      }
      this.previewMeta = {
        pointCount: result.pointCount,
        previewCount: result.previewCount,
        visibility: writtenMeta?.visibility,
        hasObject: writtenMeta?.hasObject,
        objectPointCount: writtenMeta?.objectPointCount,
        classCounts: result.classCounts || {},
      };
    },
    setModelFile(file) {
      if (!file) {
        this.modelFile = null;
        this.modelFileName = "";
        this.statusText = "Выберите .obj модель и нажмите «Сгенерировать».";
        return;
      }
      const name = String(file.name || "");
      if (!name.toLowerCase().endsWith(".obj")) {
        this.modelFile = null;
        this.modelFileName = "";
        this.statusText = "Нужен файл формата .obj";
        return;
      }
      this.modelFile = file;
      this.modelFileName = name;
      this.statusText = `Модель: ${name}`;
      this.pushLog(`Выбрана модель: ${name}`);
    },
    async generate() {
      if (this.busy) return;
      if (!this.modelFile) {
        this.statusText = "Сначала выберите файл модели .obj";
        return;
      }
      this.busy = true;
      this.statusText = "Генерация датасета…";
      this.pushLog(
        `Старт: count=${this.count}, seed=${this.seed}, beams=${this.beamCount}, length=${this.lengthCount}, scale=${this.objectScale}, dir=${this.outputDir}, model=${this.modelFileName}`,
      );
      try {
        const result = await api.datasetGenerate({
          count: Number(this.count) || 5,
          seed: Number(this.seed) || 0,
          outputDir: String(this.outputDir || "sonar_dataset"),
          objectScale: Number(this.objectScale) || 1,
          beamCount: Number(this.beamCount) || 45,
          lengthCount: Number(this.lengthCount) || 45,
          modelFile: this.modelFile,
        });
        this.lastResult = result;
        this.resolvedOutputDir = result?.outputDir || null;
        const s = result?.stats || {};
        this.statusText = `Готово: ${result.count} сцен → ${result.outputDir}`;
        this.pushLog(
          `Модель: ${result.objectName || this.modelFileName} (${result.objectVertexCount || "?"} вершин), scale=${result.objectScale ?? this.objectScale}, ширина=${result.beamCount ?? this.beamCount}, длина=${result.lengthCount ?? this.lengthCount}. class 1 = object.`,
        );
        this.pushLog(
          `Записано ${result.count} сцен. С объектом: ${s.withObject}, без: ${s.withoutObject}.`,
        );
        this.pushLog(
          `Видимость: nearly_hidden=${s.nearly_hidden || 0}, partial=${s.partial || 0}, visible=${s.visible || 0}, absent=${s.absent || 0}.`,
        );
        for (const item of result.written || []) {
          this.pushLog(
            `${item.stem}: pts=${item.pointCount}, object=${item.objectPointCount}, ${item.visibility}`,
          );
        }

        const initialStem =
          result?.preview?.stem ||
          result?.written?.find((item) => item.hasObject)?.stem ||
          result?.written?.[0]?.stem ||
          null;

        if (result?.preview?.points?.length && result.preview.stem === initialStem) {
          this.selectedStem = initialStem;
          const meta = result.written?.find((w) => w.stem === initialStem);
          this.applyPreviewPayload(
            {
              stem: initialStem,
              points: result.preview.points,
              pointCount: result.preview.pointCount,
              previewCount: result.preview.points.length,
              classCounts: result.preview.classCounts || {},
              classLabels: result.preview.classLabels || result.classLabels,
            },
            meta,
          );
        } else if (initialStem) {
          await this.selectScene(initialStem);
        } else {
          this.selectedStem = null;
          this.previewStem = null;
          this.previewPoints = [];
          this.previewMeta = null;
          this.classCounts = {};
        }
      } catch (error) {
        this.statusText = `Ошибка: ${error.message}`;
        this.pushLog(`Ошибка: ${error.message}`);
        throw error;
      } finally {
        this.busy = false;
      }
    },
    async selectScene(stem) {
      if (!stem || this.previewBusy) return;
      if (stem === this.previewStem && this.previewPoints?.length) {
        this.selectedStem = stem;
        return;
      }
      this.previewBusy = true;
      this.selectedStem = stem;
      this.statusText = `Загрузка превью: ${stem}…`;
      try {
        const result = await api.datasetPreview({
          stem,
          outputDir: String(this.previewDir),
        });
        const writtenMeta = this.written.find((item) => item.stem === result.stem);
        this.applyPreviewPayload(result, writtenMeta);
        this.statusText = `Превью: ${result.stem} (${result.pointCount} точек)`;
        this.pushLog(`Превью загружено: ${result.stem} (${result.pointCount} pts)`);
      } catch (error) {
        this.statusText = `Ошибка превью: ${error.message}`;
        this.pushLog(`Ошибка превью: ${error.message}`);
        throw error;
      } finally {
        this.previewBusy = false;
      }
    },
  },
});