import { getPayload, Payload } from "payload";
import config from "@/payload.config";
import { afterAll, beforeAll, describe, expect, it } from "vitest";
import { mkdirSync, rmSync, writeFileSync } from "fs";
import { join } from "path";
import { tmpdir } from "os";
import {
  ASSET_TYPES,
  enrichPlanMedia,
  linkWeaponCompatibility,
  planRecord,
  upsertPlan,
  type CatalogRecord,
  type MediaEnv,
} from "@/lib/arma-import/catalog";

let payload: Payload;
const RUN = `armacat-${Date.now().toString(36)}`;

let fuelId: number;
let createdFuel = false;
const assetIds: number[] = [];
const vehicleIds: number[] = [];
const mediaIds: number[] = [];
const SHOT_DIR = join(tmpdir(), `ptf-shots-${RUN}`);
// 1x1 PNG: enough for the upload path, tiny enough to inline.
const PNG_1PX = Buffer.from(
  "iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVR42mP8z8BQDwAEhQGAhKmMIQAAAABJRU5ErkJggg==",
  "base64",
);
function mediaEnv(screenshots = ""): MediaEnv {
  return { paaRoot: "", screenshots, outDir: SHOT_DIR, hemtt: "" };
}

describe("Arma catalog import", () => {
  beforeAll(async () => {
    const payloadConfig = await config;
    payload = await getPayload({ config: payloadConfig });

    // Vehicles need a fuel resource for the fuel group; reuse one if a prior
    // fixture left it, otherwise create it (and only then clean it up).
    const existingFuel = await payload.find({
      collection: "resources",
      where: { name: { equals: "Fuel" } },
      limit: 1,
      depth: 0,
      overrideAccess: true,
    });
    if (existingFuel.docs[0]) {
      fuelId = existingFuel.docs[0].id;
    } else {
      const fuel = await payload.create({
        collection: "resources",
        data: {
          name: "Fuel",
          codeName: `res_fuel_${RUN}`,
          unitOfMeasure: "liter",
          approvalStatus: "in_progress",
          type: "fluid",
          baseValue: 1,
          rarity: "common",
          massPerUnit: 0,
          gridWidth: 1,
          gridHeight: 1,
          tradeable: false,
        },
        depth: 0,
        overrideAccess: true,
      });
      fuelId = fuel.id;
      createdFuel = true;
    }
  });

  afterAll(async () => {
    for (const id of vehicleIds) {
      await payload.delete({ collection: "vehicles", id, overrideAccess: true }).catch(() => {});
    }
    for (const id of assetIds) {
      await payload.delete({ collection: "assets", id, overrideAccess: true }).catch(() => {});
    }
    for (const id of mediaIds) {
      await payload.delete({ collection: "media", id, overrideAccess: true }).catch(() => {});
    }
    rmSync(SHOT_DIR, { recursive: true, force: true });
    if (createdFuel && fuelId) {
      await payload.delete({ collection: "resources", id: fuelId, overrideAccess: true }).catch(() => {});
    }
  });

  describe("planRecord classification", () => {
    it("trusts type for every contract asset type", () => {
      for (const t of ASSET_TYPES) {
        const rec: CatalogRecord = {
          classname: `PTF_Test_Thing_${t}`,
          type: t,
          displayName: "Thing",
          picture: "",
          mod: "CBA_3den",
          description: "",
          mass: 1,
          extra: "",
        };
        const plan = planRecord(rec);
        expect(plan).toBeDefined();
        expect(plan!.kind).toBe("asset");
        expect(plan!.assetType).toBe(t);
      }
    });

    it("routes vehicle records to the vehicles collection with transportMode from extra", () => {
      const air = planRecord({
        classname: "B_Heli_Light_01_F",
        type: "vehicle",
        displayName: "Ghost Hawk",
        picture: "",
        mod: "Arma 3",
        description: "",
        mass: 3000,
        extra: "air",
      });
      expect(air!.kind).toBe("vehicle");
      expect(air!.transportMode).toBe("air");

      const sea = planRecord({ classname: "C_Boat_Civil_01_F", type: "vehicle", extra: "sea" });
      expect(sea!.transportMode).toBe("sea");
    });

    it("defaults transportMode to ground when extra is not a valid mode", () => {
      const plan = planRecord({ classname: "B_MRAP_01_F", type: "vehicle", extra: "submarine" });
      expect(plan!.kind).toBe("vehicle");
      expect(plan!.transportMode).toBe("ground");
    });

    it("falls back to heuristics for unknown types (miscellaneous, not item)", () => {
      const plan = planRecord({ classname: "PTF_Test_Odd_Gadget", type: "qrd_mysterious_device" });
      expect(plan!.kind).toBe("asset");
      expect(plan!.assetType).toBe("miscellaneous");
    });

    it("falls back to the legacy vehicle heuristic for unknown types", () => {
      const plan = planRecord({ classname: "B_Truck_01_transport_F", type: "who_knows" });
      expect(plan!.kind).toBe("vehicle");
      expect(plan!.transportMode).toBe("ground");
    });

    it("captures magazine round counts from extra", () => {
      const plan = planRecord({ classname: "30rnd_556x45_Mag", type: "magazine", extra: 30 });
      expect(plan!.kind).toBe("asset");
      expect(plan!.roundCapacity).toBe(30);
      expect(plan!.assetType).toBe("magazine");
    });

    it("ignores numeric extra for non-magazine assets", () => {
      const plan = planRecord({ classname: "PTF_Test_Rifle", type: "weapon", extra: 30 });
      expect(plan!.assetType).toBe("weapon");
      expect(plan!.roundCapacity).toBeUndefined();
    });

    it("supports legacy class/category/name aliases and icon-map overrides", () => {
      const plan = planRecord(
        { class: "Legacy_Thing", category: "optic", name: "Legacy Optic" },
        { icons: { legacy_thing: "\\a3\\data\\ui\\icon.paa" } },
      );
      expect(plan!.className).toBe("Legacy_Thing");
      expect(plan!.assetType).toBe("optic");
      expect(plan!.displayName).toBe("Legacy Optic");
      expect(plan!.pictureRef).toBe("\\a3\\data\\ui\\icon.paa");
    });

    it("defaults mod to Arma 3 and rejects records without a classname", () => {
      const plan = planRecord({ classname: "PTF_Test_Thing", type: "weapon" });
      expect(plan).toBeDefined();
      expect(plan!.mod).toBe("Arma 3");
      expect(planRecord({ type: "weapon" })).toBeUndefined();
    });
  });

  describe("upsertPlan assets", () => {
    const assetClassName = `${RUN}_asset_rifle`;

    it("creates an asset with correct className/assetType and Asset Metadata.mod", async () => {
      const plan = planRecord({
        classname: assetClassName,
        type: "weapon",
        displayName: `${RUN} Rifle`,
        picture: "",
        mod: "PTF_Test_Mod",
        description: "An import test rifle.",
        mass: 2,
        extra: "",
      })!;

      const res = await upsertPlan(payload, plan);
      expect(res.action).toBe("created");
      expect(res.collection).toBe("assets");
      assetIds.push(res.id);

      const doc = await payload.findByID({ collection: "assets", id: res.id, depth: 0, overrideAccess: true });
      expect(doc.className).toBe(assetClassName);
      expect(doc.assetType).toBe("weapon");
      expect(doc.name).toBe(`${RUN} Rifle`);
      expect(doc["Asset Metadata"]?.mod).toBe("PTF_Test_Mod");
      expect(doc["Asset Metadata"]?.gameDescription).toBe("An import test rifle.");
      expect(doc.approvalStatus).toBe("in_progress");
    });

    it("updates on re-run without duplicating and preserves approvalStatus and Virtual Data", async () => {
      const assetId = assetIds[0];
      // Simulate human edits before the second import run.
      await payload.update({
        collection: "assets",
        id: assetId,
        data: { approvalStatus: "approved", tradeable: true },
        overrideAccess: true,
      });

      const res = await upsertPlan(
        payload,
        planRecord({
          classname: assetClassName,
          type: "weapon",
          displayName: `${RUN} Rifle MkII`,
          picture: "",
          mod: "PTF_Test_Mod_2",
          description: "Updated in-game description.",
          mass: 2,
          extra: "",
        })!,
        undefined, // assets never need fuel
      );
      expect(res.action).toBe("updated");
      expect(res.collection).toBe("assets");
      expect(res.id).toBe(assetId);

      const count = await payload.count({
        collection: "assets",
        where: { className: { equals: assetClassName } },
      });
      expect(count.totalDocs).toBe(1);

      const doc = await payload.findByID({ collection: "assets", id: assetId, depth: 0, overrideAccess: true });
      expect(doc.name).toBe(`${RUN} Rifle MkII`);
      expect(doc["Asset Metadata"]?.mod).toBe("PTF_Test_Mod_2");
      expect(doc["Asset Metadata"]?.gameDescription).toBe("Updated in-game description.");
      expect(doc.approvalStatus).toBe("approved"); // never reset by re-import
      expect(doc.tradeable).toBe(true); // Virtual Data untouched
    });
  });

  describe("adding images in a later import pass", () => {
    const lateClassName = `${RUN}_late_image_rifle`;

    function planFor(screenshot: string) {
      const plan = planRecord({
        classname: lateClassName,
        type: "weapon",
        displayName: `${RUN} Late Image Rifle`,
        picture: "",
        mod: "PTF_Test_Mod",
        description: "",
        mass: 1,
        extra: "",
      })!;
      enrichPlanMedia(plan, mediaEnv(screenshot));
      return plan;
    }

    it("imports the catalog with no image, then attaches one on a later run", async () => {
      // Pass 1: data only (no --screenshots).
      const first = await upsertPlan(payload, planFor(""));
      expect(first.action).toBe("created");
      assetIds.push(first.id);
      let doc = await payload.findByID({ collection: "assets", id: first.id, depth: 0, overrideAccess: true });
      expect(doc["Asset Metadata"]?.thumbnail).toBeFalsy();

      // Pass 2: the screenshot now exists on disk.
      mkdirSync(SHOT_DIR, { recursive: true });
      writeFileSync(join(SHOT_DIR, `${lateClassName}.png`), PNG_1PX);

      const second = await upsertPlan(payload, planFor(SHOT_DIR));
      expect(second.action).toBe("updated");
      expect(second.id).toBe(first.id); // upsert, not a duplicate

      doc = await payload.findByID({ collection: "assets", id: first.id, depth: 0, overrideAccess: true });
      const thumbnail = doc["Asset Metadata"]?.thumbnail;
      expect(thumbnail).toBeTruthy();
      if (typeof thumbnail === "number") mediaIds.push(thumbnail);
      else if (thumbnail && typeof thumbnail === "object") mediaIds.push(thumbnail.id);

      const count = await payload.count({
        collection: "assets",
        where: { className: { equals: lateClassName } },
      });
      expect(count.totalDocs).toBe(1);
    });

    it("keeps the image when re-run, and repairs a cleared one", async () => {
      const assetId = assetIds[assetIds.length - 1];
      const before = await payload.findByID({ collection: "assets", id: assetId, depth: 0, overrideAccess: true });
      const originalId = typeof before["Asset Metadata"]?.thumbnail === "number"
        ? (before["Asset Metadata"]!.thumbnail as number)
        : (before["Asset Metadata"]!.thumbnail as { id: number }).id;

      // Re-run: the media doc already exists, so it must not be duplicated.
      await upsertPlan(payload, planFor(SHOT_DIR));
      const after = await payload.findByID({ collection: "assets", id: assetId, depth: 0, overrideAccess: true });
      const afterId = typeof after["Asset Metadata"]?.thumbnail === "number"
        ? (after["Asset Metadata"]!.thumbnail as number)
        : (after["Asset Metadata"]!.thumbnail as { id: number }).id;
      expect(afterId).toBe(originalId);

      // A cleared thumbnail is repaired by the next run (media already exists).
      await payload.update({
        collection: "assets",
        id: assetId,
        data: { "Asset Metadata": { thumbnail: null } },
        overrideAccess: true,
      });
      await upsertPlan(payload, planFor(SHOT_DIR));
      const repaired = await payload.findByID({ collection: "assets", id: assetId, depth: 0, overrideAccess: true });
      expect(repaired["Asset Metadata"]?.thumbnail).toBeTruthy();
    });
  });

  describe("weapon compatibility", () => {
    const rifle = `${RUN}_compat_rifle`;
    const mag = `${RUN}_compat_mag`;
    const optic = `${RUN}_compat_optic`;
    const light = `${RUN}_compat_light`;

    function catalog() {
      return [
        { classname: rifle, type: "weapon", displayName: "Compat Rifle", compat: {
          slot: "primary",
          // duplicate + different case + a ref that was never imported
          magazines: [mag, mag.toUpperCase(), `${RUN}_not_in_app`],
          attachments: [optic, light],
        } },
        { classname: mag, type: "magazine", displayName: "Compat Mag", extra: 30 },
        { classname: optic, type: "optic", displayName: "Compat Optic" },
        { classname: light, type: "miscellaneous", displayName: "Compat Light" },
      ].map((r) => planRecord(r as CatalogRecord)!);
    }

    it("parses compat on weapons only, deduplicating classnames", () => {
      const plans = catalog();
      expect(plans[0].compat).toEqual({
        slot: "primary",
        magazines: [mag, `${RUN}_not_in_app`],
        attachments: [optic, light],
      });
      expect(plans[1].compat).toBeUndefined();
      expect(planRecord({ classname: "x", type: "magazine", compat: { magazines: ["y"] } })!.compat).toBeUndefined();
    });

    it("links magazines/attachments as references, merges on re-run, never duplicates", async () => {
      const plans = catalog();
      const ids: Record<string, number> = {};
      for (const plan of plans) {
        const res = await upsertPlan(payload, plan);
        assetIds.push(res.id);
        ids[plan.className] = res.id;
      }

      const first = await linkWeaponCompatibility(payload, plans);
      expect(first.updated).toBe(1);
      expect(first.unresolved).toBe(1); // the never-imported magazine
      expect(first.skippedType).toBe(1); // rail light is "miscellaneous"

      let doc = await payload.findByID({ collection: "assets", id: ids[rifle], depth: 0, overrideAccess: true });
      const wc = () => (doc as unknown as { "Weapon Configuration": Record<string, unknown> })["Weapon Configuration"];
      expect(wc().slotType).toBe("primary");
      expect(wc().compatibleMagazines).toEqual([ids[mag]]);
      expect(wc().compatibleAttachments).toEqual([ids[optic]]);

      // A link added by hand survives, and re-running adds nothing twice.
      const extraOptic = await upsertPlan(payload, planRecord({ classname: `${RUN}_hand_optic`, type: "optic" })!);
      assetIds.push(extraOptic.id);
      await payload.update({
        collection: "assets",
        id: ids[rifle],
        data: { "Weapon Configuration": { compatibleAttachments: [ids[optic], extraOptic.id] } } as never,
        overrideAccess: true,
      });
      const second = await linkWeaponCompatibility(payload, plans);
      expect(second.updated).toBe(0);
      expect(second.unchanged).toBe(1);

      doc = await payload.findByID({ collection: "assets", id: ids[rifle], depth: 0, overrideAccess: true });
      expect(wc().compatibleMagazines).toEqual([ids[mag]]);
      expect(wc().compatibleAttachments).toEqual([ids[optic], extraOptic.id]);

      // Each referenced item still exists exactly once.
      for (const name of [mag, optic]) {
        const count = await payload.count({ collection: "assets", where: { className: { equals: name } } });
        expect(count.totalDocs).toBe(1);
      }
    });
  });

  describe("upsertPlan vehicles", () => {
    const vehicleClassname = `${RUN}_heli_ghost`;

    it("creates a vehicle with classname and transportMode air", async () => {
      const plan = planRecord({
        classname: vehicleClassname,
        type: "vehicle",
        displayName: `${RUN} Ghost Hawk`,
        picture: "",
        mod: "PTF_Test_Mod",
        description: "An import test helicopter.",
        mass: 3000,
        extra: "air",
      })!;

      const res = await upsertPlan(payload, plan, fuelId);
      expect(res.action).toBe("created");
      expect(res.collection).toBe("vehicles");
      vehicleIds.push(res.id);

      const doc = await payload.findByID({ collection: "vehicles", id: res.id, depth: 0, overrideAccess: true });
      expect(doc.classname).toBe(vehicleClassname);
      expect(doc.name).toBe(`${RUN} Ghost Hawk`);
      expect(doc.transportMode).toBe("air");
      expect(doc.fuel.fuelType).toBe(fuelId);
      expect(doc.fuel.fuelCapacity).toBe(100);
      expect(doc.approvalStatus).toBe("in_progress");
    });

    it("updates an existing vehicle without duplicating", async () => {
      const vehicleId = vehicleIds[0];
      const res = await upsertPlan(
        payload,
        planRecord({
          classname: vehicleClassname,
          type: "vehicle",
          displayName: `${RUN} Ghost Hawk II`,
          extra: "air",
        })!,
        fuelId,
      );
      expect(res.action).toBe("updated");
      expect(res.id).toBe(vehicleId);

      const count = await payload.count({
        collection: "vehicles",
        where: { classname: { equals: vehicleClassname } },
      });
      expect(count.totalDocs).toBe(1);

      const doc = await payload.findByID({ collection: "vehicles", id: vehicleId, depth: 0, overrideAccess: true });
      expect(doc.name).toBe(`${RUN} Ghost Hawk II`);
      expect(doc.transportMode).toBe("air");
    });
  });
});