import { getPayload, Payload } from "payload";
import config from "@/payload.config";

import { afterAll, beforeAll, describe, expect, it } from "vitest";
import type { Campaign, Map as MissionMap, Mission, User } from "@/payload-types";
import {
  autoCompleteMissions,
  isPastScheduledDay,
  startOfToday,
} from "@/lib/intelligence/missionLifecycle";

let payload: Payload;

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

describe("Mission auto-complete", () => {
  let mapId: number;
  let campaignId: number;
  let authorId: number;
  const missionIds: number[] = [];

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

    const map = (await payload.create({
      collection: "maps",
      data: { name: `${RUN} Map` },
      overrideAccess: true,
      depth: 0,
    })) as unknown as MissionMap;
    mapId = map.id;

    const campaign = (await payload.create({
      collection: "campaigns",
      data: { name: `${RUN} Campaign`, summary: "Auto-complete test campaign", status: "concept" },
      overrideAccess: true,
      depth: 0,
    })) as unknown as Campaign;
    campaignId = campaign.id;

    const author = (await payload.create({
      collection: "users",
      data: {
        username: `${RUN}-author`,
        discordUsername: `${RUN}-author`,
        displayName: "AUTHOR",
        steamId: `7656119${Math.floor(Math.random() * 1e9)}`,
        password: "Test123",
        roles: ["user"],
      },
      overrideAccess: true,
      depth: 0,
    })) as unknown as User;
    authorId = author.id;
  });

  afterAll(async () => {
    for (const id of missionIds) {
      await payload.delete({ collection: "missions", id, overrideAccess: true }).catch(() => {});
    }
    await payload
      .delete({ collection: "campaigns", id: campaignId, overrideAccess: true })
      .catch(() => {});
    await payload.delete({ collection: "maps", id: mapId, overrideAccess: true }).catch(() => {});
    // User deletion trips FK constraints unless the hook-provisioned
    // personal bank account and profile are removed first.
    const accounts = await payload
      .find({
        collection: "bank-accounts",
        where: { ownerUser: { equals: authorId } },
        limit: 5,
        depth: 0,
        overrideAccess: true,
      })
      .catch(() => null);
    for (const account of accounts?.docs ?? []) {
      await payload
        .delete({ collection: "bank-accounts", id: account.id, overrideAccess: true })
        .catch(() => {});
    }
    const profiles = await payload
      .find({
        collection: "profiles",
        where: { user: { equals: authorId } },
        limit: 5,
        depth: 0,
        overrideAccess: true,
      })
      .catch(() => null);
    for (const profile of profiles?.docs ?? []) {
      await payload
        .delete({ collection: "profiles", id: profile.id, overrideAccess: true })
        .catch(() => {});
    }
    await payload.delete({ collection: "users", id: authorId, overrideAccess: true }).catch(() => {});
  });

  const makeMission = async (
    label: string,
    status: Mission["ownershipAndStatus"]["status"],
    start: Date,
  ): Promise<Mission> => {
    const mission = (await payload.create({
      collection: "missions",
      data: {
        name: `${RUN} ${label}`,
        codeName: `${RUN}-${label}`,
        summary: "Auto-complete boundary test mission",
        operationType: "main",
        classification: {
          map: mapId,
          missionType: "PvE",
          campaign: campaignId,
          startDateTime: start.toISOString(),
          estimatedDuration: 60,
        },
        ownershipAndStatus: {
          authors: [authorId],
          status,
          visibility: "unit",
        },
        missionRoles: {
          maxPlayers: 16,
        },
        gameDetails: {
          serverDetails: {
            serverIp: "127.0.0.1",
            serverPort: 2302,
          },
        },
        briefing: [],
      },
      overrideAccess: true,
      depth: 0,
    })) as unknown as Mission;
    missionIds.push(mission.id);
    return mission;
  };

  const fetchMission = (id: number): Promise<Mission> =>
    payload.findByID({
      collection: "missions",
      id,
      depth: 0,
      overrideAccess: true,
    }) as unknown as Promise<Mission>;

  it("completes Scheduled/Active missions only after the day after their scheduled date starts", async () => {
    const now = new Date();
    now.setHours(12, 0, 0, 0);

    const at = (dayOffset: number, hour: number): Date => {
      const d = new Date(now);
      d.setDate(now.getDate() + dayOffset);
      d.setHours(hour, 0, 0, 0);
      return d;
    };

    const dueScheduled = await makeMission("due-scheduled", "Scheduled", at(-1, 20));
    const dueActive = await makeMission("due-active", "Active", at(-3, 20));
    const midnightEdge = await makeMission("midnight-edge", "Scheduled", at(-1, 23));
    const sameDayEarlier = await makeMission("same-day-earlier", "Scheduled", at(0, 8));
    const sameDayLater = await makeMission("same-day-later", "Scheduled", at(0, 13));
    const draftReady = await makeMission("draft-ready", "Ready", at(-1, 20));
    const cancelled = await makeMission("cancelled", "Cancelled", at(-1, 20));

    const result = await autoCompleteMissions(payload, now, { missionIds });

    expect(result.missions.map((m) => m.id).sort()).toEqual(
      [dueScheduled.id, dueActive.id, midnightEdge.id].sort(),
    );

    expect((await fetchMission(dueScheduled.id)).ownershipAndStatus.status).toBe("Completed");
    expect((await fetchMission(dueActive.id)).ownershipAndStatus.status).toBe("Completed");
    expect((await fetchMission(midnightEdge.id)).ownershipAndStatus.status).toBe("Completed");
    expect((await fetchMission(sameDayEarlier.id)).ownershipAndStatus.status).toBe("Scheduled");
    expect((await fetchMission(sameDayLater.id)).ownershipAndStatus.status).toBe("Scheduled");
    expect((await fetchMission(draftReady.id)).ownershipAndStatus.status).toBe("Ready");
    expect((await fetchMission(cancelled.id)).ownershipAndStatus.status).toBe("Cancelled");

    // The partial group update must not wipe sibling fields.
    const updated = await fetchMission(dueScheduled.id);
    expect(updated.ownershipAndStatus.visibility).toBe("unit");
    const authorRefs = Array.isArray(updated.ownershipAndStatus.authors)
      ? updated.ownershipAndStatus.authors
      : [updated.ownershipAndStatus.authors];
    expect(authorRefs).toContain(authorId);
  });

  it("is idempotent — a second sweep finds nothing left to complete", async () => {
    const now = new Date();
    now.setHours(12, 0, 0, 0);
    const result = await autoCompleteMissions(payload, now, { missionIds });
    expect(result.completed).toBe(0);
    expect(result.missions).toEqual([]);
  });

  it("classifies day boundaries deterministically", () => {
    const now = new Date(2026, 7, 24, 12, 0, 0);
    expect(startOfToday(now).getTime()).toBe(new Date(2026, 7, 24, 0, 0, 0).getTime());
    expect(isPastScheduledDay("2026-08-23T23:59:59.999", now)).toBe(true);
    expect(isPastScheduledDay("2026-08-24T00:00:00.000", now)).toBe(false);
    expect(isPastScheduledDay("2026-08-24T19:30:00.000", now)).toBe(false);
    expect(isPastScheduledDay("2026-08-25T00:00:00.000", now)).toBe(false);
    expect(isPastScheduledDay("not-a-date", now)).toBe(false);
  });
});