import { getPayload, Payload } from "payload";
import config from "@/payload.config";
import { afterAll, beforeAll, describe, expect, it } from "vitest";
import type {
  GameStructure,
  GameVehicle,
  OperationReservation,
  Resource,
  Structure,
  User,
} from "@/payload-types";
import { listReservationOptions } from "@/lib/operations/reservationOptions";
import { createAccount } from "@/lib/banking";
import { storedAmount } from "@/lib/base/storage";

let payload: Payload;

const RUN = `res-options-${Date.now().toString(36)}`;

// ---------------------------------------------------------------------------
// Fixture tracking for cleanup
// ---------------------------------------------------------------------------
const reservationIds: number[] = [];
const userIds: number[] = [];
const roleIds: number[] = [];
const accountIds: number[] = [];
const gameStructureIds: number[] = [];
const blueprintIds: number[] = [];
const gameVehicleIds: number[] = [];
const vehicleBlueprintIds: number[] = [];
const resourceIds: number[] = [];
const missionIds: number[] = [];
const campaignIds: number[] = [];
const mapIds: number[] = [];

let commandUser: User;
let plainUser: User;
let mapId: number;
let campaignId: number;
let resourceAId: number;
let resourceBId: number;
let normalBlueprintId: number;
let vehicleBlueprintId: number;

const LEXICAL_EMPTY = {
  root: {
    children: [{ text: "" }],
    direction: null,
    format: "" as const,
    indent: 0,
    type: "text",
    version: 1,
  },
};

function relId(value: unknown): number {
  return typeof value === "object" && value !== null
    ? (value as { id: number }).id
    : (value as number);
}

async function makeUser(label: string, roleDocIds?: number[]): Promise<User> {
  const user = (await payload.create({
    collection: "users",
    data: {
      username: `${RUN}-${label}-${Math.random().toString(36).slice(2, 8)}`,
      discordUsername: `${RUN}-${label}-discord`,
      displayName: `${RUN} ${label}`,
      steamId: `${RUN}-steam-${label}`,
      password: "Test1234",
      roles: ["user"],
      ...(roleDocIds && roleDocIds.length > 0 ? { roleDocs: roleDocIds } : {}),
    },
    overrideAccess: true,
    depth: 0,
  })) as unknown as User;
  userIds.push(user.id);
  return user;
}

async function makeMission(
  status: "Ready" | "Scheduled" | "Completed" | "Cancelled",
  visibility: "unit" | "leadership",
): Promise<number> {
  const mission = await payload.create({
    collection: "missions",
    data: {
      name: `${RUN} ${status} ${visibility}`,
      codeName: `${RUN}-${status}-${visibility}`,
      summary: "Options test mission",
      operationType: "main",
      classification: {
        map: mapId,
        missionType: "PvE",
        campaign: campaignId,
        startDateTime: new Date(Date.now() + 86_400_000).toISOString(),
        estimatedDuration: 60,
      },
      ownershipAndStatus: {
        authors: [commandUser.id],
        status,
        visibility,
      },
      missionRoles: { maxPlayers: 16 },
      gameDetails: { serverDetails: { serverIp: "127.0.0.1", serverPort: 2302 } },
      briefing: [],
    },
    overrideAccess: true,
    depth: 0,
  });
  missionIds.push(mission.id);
  return mission.id;
}

async function makeOrigin(stock: { resourceId: number; amount: number }[]): Promise<number> {
  const site = await payload.create({
    collection: "game-structures",
    data: {
      name: `${RUN} origin ${gameStructureIds.length}`,
      type: normalBlueprintId,
      map: mapId,
      coordinates: [100 + gameStructureIds.length, 100],
      constructionStatus: "complete",
      storedResources: stock.map((s, i) => ({
        resource: s.resourceId,
        amount: s.amount,
        gridX: 0,
        gridY: i,
        rotated: false,
      })),
    },
    overrideAccess: true,
    depth: 0,
  });
  gameStructureIds.push(site.id);
  return site.id;
}

async function makeVehicle(status: "idle" | "assigned"): Promise<number> {
  const vehicle = await payload.create({
    collection: "game-vehicles",
    data: {
      name: `${RUN} vic ${gameVehicleIds.length}`,
      type: vehicleBlueprintId,
      deployedAt: gameStructureIds[0],
      status,
      currentFuel: 800,
      currentHealth: 100,
    },
    overrideAccess: true,
    depth: 0,
  });
  gameVehicleIds.push(vehicle.id);
  return vehicle.id;
}

// ---------------------------------------------------------------------------
// Setup / teardown
// ---------------------------------------------------------------------------
beforeAll(async () => {
  const payloadConfig = await config;
  payload = await getPayload({ config: payloadConfig });

  const superRole = await payload.create({
    collection: "roles",
    data: { name: `${RUN} Command`, slug: `${RUN}-command`, isSuperuser: true },
    overrideAccess: true,
    depth: 0,
  });
  roleIds.push(superRole.id);

  commandUser = await makeUser("command", [superRole.id]);
  plainUser = await makeUser("plain");

  const map = await payload.create({
    collection: "maps",
    data: { name: `${RUN} Map`, worldSizeWidth: 8192, worldSizeHeight: 8192, basemapMode: "image" },
    overrideAccess: true,
    depth: 0,
  });
  mapId = map.id;
  mapIds.push(map.id);

  const campaign = await payload.create({
    collection: "campaigns",
    data: {
      name: `${RUN} Campaign`,
      summary: "Options test campaign",
      status: "concept",
      campaignMode: "custom",
    },
    overrideAccess: true,
    depth: 0,
  });
  campaignId = campaign.id;
  campaignIds.push(campaign.id);

  const resourceA = await payload.create({
    collection: "resources",
    data: {
      name: `${RUN} Alpha`,
      codeName: `${RUN}-alpha`,
      approvalStatus: "in_progress",
      type: "physical",
      baseValue: 1,
      rarity: "common",
      unitOfMeasure: "kg",
      massPerUnit: 1,
      gridWidth: 1,
      gridHeight: 1,
    },
    overrideAccess: true,
    depth: 0,
  });
  resourceAId = resourceA.id;
  resourceIds.push(resourceA.id);

  const resourceB = await payload.create({
    collection: "resources",
    data: {
      name: `${RUN} Beta`,
      codeName: `${RUN}-beta`,
      approvalStatus: "in_progress",
      type: "physical",
      baseValue: 1,
      rarity: "common",
      unitOfMeasure: "kg",
      massPerUnit: 1,
      gridWidth: 1,
      gridHeight: 1,
    },
    overrideAccess: true,
    depth: 0,
  });
  resourceBId = resourceB.id;
  resourceIds.push(resourceB.id);

  const normalBlueprint = await payload.create({
    collection: "structures",
    data: {
      name: `${RUN} Depot`,
      codeName: `${RUN}-depot`,
      approvalStatus: "in_progress",
      description: LEXICAL_EMPTY as unknown as Structure["description"],
      category: "logistics",
      materials: [{ resource: resourceAId, amount: 1 }],
      constructionDurationMinutes: 1,
      terrainType: "land",
      maxHealth: 100,
    },
    overrideAccess: true,
    depth: 0,
  });
  normalBlueprintId = normalBlueprint.id;
  blueprintIds.push(normalBlueprint.id);

  const vehicleBlueprint = await payload.create({
    collection: "vehicles",
    data: {
      name: `${RUN} Truck`,
      approvalStatus: "in_progress",
      transportMode: "ground",
      maxSpeedOnRoad: 60,
      fuel: { fuelType: resourceAId, fuelCapacity: 1000, fuelConsumptionRate: 0.01 },
    },
    overrideAccess: true,
    depth: 0,
  });
  vehicleBlueprintId = vehicleBlueprint.id;
  vehicleBlueprintIds.push(vehicleBlueprint.id);
});

afterAll(async () => {
  if (!payload) return;
  for (const id of reservationIds) {
    await payload.delete({ collection: "operation-reservations", id, overrideAccess: true }).catch(() => {});
  }
  for (const id of gameVehicleIds) {
    await payload.delete({ collection: "game-vehicles", id, overrideAccess: true }).catch(() => {});
  }
  for (const id of gameStructureIds) {
    await payload.delete({ collection: "game-structures", id, overrideAccess: true }).catch(() => {});
  }
  for (const id of vehicleBlueprintIds) {
    await payload.delete({ collection: "vehicles", id, overrideAccess: true }).catch(() => {});
  }
  for (const id of blueprintIds) {
    await payload.delete({ collection: "structures", id, overrideAccess: true }).catch(() => {});
  }
  for (const id of resourceIds) {
    await payload.delete({ collection: "resources", id, overrideAccess: true }).catch(() => {});
  }
  for (const id of missionIds) {
    await payload.delete({ collection: "missions", id, overrideAccess: true }).catch(() => {});
  }
  for (const id of campaignIds) {
    await payload.delete({ collection: "campaigns", id, overrideAccess: true }).catch(() => {});
  }
  for (const id of mapIds) {
    await payload.delete({ collection: "maps", id, overrideAccess: true }).catch(() => {});
  }

  for (const id of accountIds) {
    const txns = await payload.find({
      collection: "bank-transactions",
      where: { or: [{ fromAccount: { equals: id } }, { toAccount: { equals: id } }] },
      limit: 100,
      depth: 0,
      overrideAccess: true,
    });
    for (const txn of txns.docs) {
      await payload.delete({ collection: "bank-transactions", id: txn.id, overrideAccess: true }).catch(() => {});
    }
    await payload.delete({ collection: "bank-accounts", id, overrideAccess: true }).catch(() => {});
  }
  for (const id of userIds) {
    await payload.delete({ collection: "users", id, overrideAccess: true }).catch(() => {});
  }
  for (const id of roleIds) {
    await payload.delete({ collection: "roles", id, overrideAccess: true }).catch(() => {});
  }
});

// ---------------------------------------------------------------------------
// Tests
// ---------------------------------------------------------------------------
describe("listReservationOptions", () => {
  it("returns only Ready/Scheduled unit-visible missions, sorted by start", async () => {
    const scheduledId = await makeMission("Scheduled", "unit");
    const readyId = await makeMission("Ready", "unit");
    const completedId = await makeMission("Completed", "unit");
    const leadershipId = await makeMission("Scheduled", "leadership");

    const options = await listReservationOptions(payload, commandUser);
    const ids = options.upcomingMissions.map((m) => m.id);

    expect(ids).toContain(scheduledId);
    expect(ids).toContain(readyId);
    expect(ids).not.toContain(completedId);
    expect(ids).not.toContain(leadershipId);
  });

  it("excludes non-idle vehicles and vehicles already reserved", async () => {
    const idleId = await makeVehicle("idle");
    const assignedId = await makeVehicle("assigned");
    const reservedId = await makeVehicle("idle");

    // Reserve the second idle vehicle via an active (reserved) reservation row.
    const row = await payload.create({
      collection: "operation-reservations",
      data: {
        reservationKey: `${RUN}-reserved-veh`,
        operationId: `${RUN}-op`,
        status: "reserved",
        vehicles: [{ vehicle: reservedId }],
        createdBy: commandUser.id,
      },
      overrideAccess: true,
      depth: 0,
    });
    reservationIds.push(row.id);

    const options = await listReservationOptions(payload, commandUser);
    const vehicleIds = options.vehicles.map((v) => v.id);

    expect(vehicleIds).toContain(idleId);
    expect(vehicleIds).not.toContain(assignedId);
    expect(vehicleIds).not.toContain(reservedId);
  });

  it("reflects storedAmount per origin in stockByOrigin", async () => {
    const originId = await makeOrigin([
      { resourceId: resourceAId, amount: 100 },
      { resourceId: resourceBId, amount: 50 },
    ]);

    const options = await listReservationOptions(payload, commandUser);
    const stock = options.stockByOrigin[String(originId)];

    expect(stock).toHaveLength(2);

    const origin = (await payload
      .findByID({ collection: "game-structures", id: originId, depth: 0, overrideAccess: true })
      .catch(() => null)) as unknown as (GameStructure & {
      storedResources?: unknown[];
      voidStorage?: unknown[];
    }) | null;
    const entries = [
      ...(origin?.storedResources ?? []),
      ...(origin?.voidStorage ?? []),
    ] as Array<{ resource: { id: number }; amount: number }>;

    const amountA = storedAmount(entries as never, resourceAId);
    const amountB = storedAmount(entries as never, resourceBId);
    expect(amountA).toBe(100);
    expect(amountB).toBe(50);

    const lineA = stock!.find((s) => s.resourceId === resourceAId);
    const lineB = stock!.find((s) => s.resourceId === resourceBId);
    expect(lineA?.amount).toBe(amountA);
    expect(lineB?.amount).toBe(amountB);
    expect(lineA?.resourceName).toBeTruthy();
    expect(lineB?.resourceName).toBeTruthy();
  });

  it("caps the roster pool at 200 users", async () => {
    for (let i = 0; i < 205; i++) {
      await makeUser(`roster${i}`);
    }
    const options = await listReservationOptions(payload, commandUser);
    expect(options.rosterUsers.length).toBe(200);
    // Every entry carries a display name and id; nothing else leaks.
    for (const user of options.rosterUsers) {
      expect(typeof user.id).toBe("number");
      expect(user.displayName.length).toBeGreaterThan(0);
    }
  }, 120000);

  it("scopes budget accounts to treasury + this user's personal accounts, no balances", async () => {
    const treasury = await createAccount(payload, { name: `${RUN} Treasury`, accountType: "treasury" });
    accountIds.push(treasury.id);
    const commandPersonal = await createAccount(payload, {
      name: `${RUN} Command Personal`,
      accountType: "personal",
      ownerUserId: commandUser.id,
    });
    accountIds.push(commandPersonal.id);
    const plainPersonal = await createAccount(payload, {
      name: `${RUN} Plain Personal`,
      accountType: "personal",
      ownerUserId: plainUser.id,
    });
    accountIds.push(plainPersonal.id);

    const options = await listReservationOptions(payload, commandUser);
    const ids = options.budgetAccounts.map((a) => a.id);

    expect(ids).toContain(treasury.id);
    expect(ids).toContain(commandPersonal.id);
    // Another user's personal account is out of scope.
    expect(ids).not.toContain(plainPersonal.id);

    // Only id, name, and type are exposed - balances never leak.
    for (const account of options.budgetAccounts) {
      const keys = Object.keys(account).sort();
      expect(keys).toEqual(["id", "name", "type"]);
    }
  });
});