import { Prisma } from '../generated/prisma';
import { PrismaService } from '../src/prisma/prisma.service';
import {
  lockRowForUpdate,
  lockRowsForShare,
  lockRowsForUpdate,
} from '../src/prisma/row-lock';
import {
  DEFAULT_RULES,
  lockRuleIn,
  readRule,
} from '../src/automation/rule-config';

/**
 * Schema-level guarantees of the T4 suggestion migrations that the Prisma
 * schema alone cannot express (nullable unique dedupe key, enum values the
 * database really accepts) and the row locks against a real PostgreSQL.
 */
describe('T4 schema I (e2e)', () => {
  let prisma: PrismaService;
  const suffix = `${Date.now()}-${Math.round(Math.random() * 1e6)}`;
  const createdSuggestionIds: string[] = [];
  const createdTaskIds: string[] = [];

  const suggestionData = (
    overrides: Partial<Prisma.SuggestionCreateManyInput> = {},
  ): Prisma.SuggestionCreateManyInput => ({
    ruleKey: 'INSPECTION_INTERVAL',
    source: 'RULE',
    mode: 'DO',
    intent: 'INSPECT',
    relatedType: 'COLONY',
    reasonCode: 'T4_SCHEMA_TEST',
    evidence: { colonies: 1 },
    ...overrides,
  });

  beforeAll(() => {
    prisma = new PrismaService();
  });

  afterAll(async () => {
    await prisma.task.deleteMany({ where: { id: { in: createdTaskIds } } });
    await prisma.suggestion.deleteMany({
      where: {
        OR: [
          { id: { in: createdSuggestionIds } },
          { reasonCode: `T4_SCHEMA_TEST_${suffix}` },
        ],
      },
    });
    await prisma.$disconnect();
  });

  it('keeps at most one suggestion per dedupe key', async () => {
    const data = suggestionData({
      reasonCode: `T4_SCHEMA_TEST_${suffix}`,
      dedupeKey: `INSPECTION_INTERVAL:none:t-${suffix}`,
    });

    const first = await prisma.suggestion.createMany({
      data: [data],
      skipDuplicates: true,
    });
    const second = await prisma.suggestion.createMany({
      data: [data],
      skipDuplicates: true,
    });

    expect(first.count).toBe(1);
    expect(second.count).toBe(0);
  });

  it('lets any number of suggestions share a missing dedupe key', async () => {
    const reasonCode = `T4_SCHEMA_TEST_${suffix}`;
    const result = await prisma.suggestion.createMany({
      data: [
        suggestionData({ reasonCode, dedupeKey: null }),
        suggestionData({ reasonCode, dedupeKey: null }),
      ],
      skipDuplicates: true,
    });

    expect(result.count).toBe(2);
  });

  it('starts a suggestion OPEN with normal priority', async () => {
    const created = await prisma.suggestion.create({
      data: suggestionData({
        reasonCode: `T4_SCHEMA_TEST_${suffix}`,
      }),
    });
    createdSuggestionIds.push(created.id);

    expect(created.status).toBe('OPEN');
    expect(created.priority).toBe('NORMAL');
    expect(created.dedupeKey).toBeNull();
  });

  it('keeps a task when its source suggestion is deleted', async () => {
    const suggestion = await prisma.suggestion.create({
      data: suggestionData({
        reasonCode: `T4_SCHEMA_TEST_${suffix}`,
      }),
    });
    const task = await prisma.task.create({
      data: { title: `T4 task ${suffix}`, sourceSuggestionId: suggestion.id },
    });
    createdTaskIds.push(task.id);

    await prisma.suggestion.delete({ where: { id: suggestion.id } });

    const after = await prisma.task.findUniqueOrThrow({
      where: { id: task.id },
    });
    expect(after.sourceSuggestionId).toBeNull();
  });

  it('accepts the new enum values', async () => {
    const rows = await prisma.$queryRaw<
      { enum: string; values: string[] }[]
    >`SELECT t.typname AS enum, array_agg(e.enumlabel::text) AS values
      FROM pg_type t JOIN pg_enum e ON e.enumtypid = t.oid
      WHERE t.typname IN ('AutomationTriggerType', 'BatchMovementType', 'CalendarSyncSourceType')
      GROUP BY t.typname`;
    const valuesOf = (name: string) =>
      rows.find((row) => row.enum === name)?.values ?? [];

    expect(valuesOf('AutomationTriggerType')).toEqual(
      expect.arrayContaining([
        'INSPECTION_INTERVAL',
        'QUEEN_CELLS_SWARM_CHECK',
        'QUEEN_ACCEPTANCE_CHECK',
        'SPLIT_SCHEDULE',
        'COLONY_ENDED_CLEANUP',
        'WITHDRAWAL_ENDED',
        'HONEY_WATER_CONTENT',
        'SEASON_AUTOPILOT',
        'PHENOLOGY',
      ]),
    );
    expect(valuesOf('BatchMovementType')).toContain('BOTTLING');
    expect(valuesOf('CalendarSyncSourceType')).toContain('WITHDRAWAL');
  });

  describe('row locks on the new tables', () => {
    it('locks a suggestion by id and reports a missing one', async () => {
      const suggestion = await prisma.suggestion.create({
        data: suggestionData({
          reasonCode: `T4_SCHEMA_TEST_${suffix}`,
        }),
      });
      createdSuggestionIds.push(suggestion.id);

      const result = await prisma.$transaction(async (tx) => {
        const existing = await lockRowForUpdate(
          tx,
          'Suggestion',
          suggestion.id,
        );
        await lockRowsForUpdate(tx, 'Suggestion', [suggestion.id, 'nope']);
        await lockRowsForShare(tx, 'Suggestion', [suggestion.id]);
        const missing = await lockRowForUpdate(tx, 'Suggestion', 'nope');
        return { existing, missing };
      });

      expect(result).toEqual({ existing: true, missing: false });
    });

    it('creates a missing rule from the defaults, locks it and reads it parsed', async () => {
      await prisma.automationRule.deleteMany({
        where: { triggerType: 'COLONY_ENDED_CLEANUP' },
      });
      const before = await readRule(prisma, 'COLONY_ENDED_CLEANUP');
      expect(before.id).toBeNull();
      expect(before.active).toBe(true);

      const locked = await prisma.$transaction((tx) =>
        lockRuleIn(tx, 'COLONY_ENDED_CLEANUP'),
      );

      expect(locked.active).toBe(true);
      expect(locked.config).toEqual({});
      expect(locked.actionTemplate).toBe(
        DEFAULT_RULES.COLONY_ENDED_CLEANUP.actionTemplate,
      );
      const after = await readRule(prisma, 'COLONY_ENDED_CLEANUP');
      expect(after.id).toBe(locked.id);
    });

    it('leaves an existing rule as it is', async () => {
      const rule = await prisma.automationRule.upsert({
        where: { triggerType: 'WITHDRAWAL_ENDED' },
        create: {
          triggerType: 'WITHDRAWAL_ENDED',
          active: false,
          config: { notify: false },
          actionTemplate: '',
        },
        update: { active: false, config: { notify: false } },
      });

      const locked = await prisma.$transaction((tx) =>
        lockRuleIn(tx, 'WITHDRAWAL_ENDED'),
      );

      expect(locked.id).toBe(rule.id);
      expect(locked.active).toBe(false);
      expect(locked.config).toEqual({ notify: false });

      await prisma.automationRule.update({
        where: { id: rule.id },
        data: { active: true, config: { notify: true } },
      });
    });
  });
});