import { QueryRunner } from 'typeorm';
import { CreateRenownAndReputation1791000000000 } from './1791000000000-CreateRenownAndReputation';

describe('CreateRenownAndReputation1791000000000', () => {
  async function runUp() {
    const query = jest.fn().mockResolvedValue(undefined);
    const queryRunner = { query } as unknown as QueryRunner;
    const migration = new CreateRenownAndReputation1791000000000();
    await migration.up(queryRunner);
    return query.mock.calls.map(([sql]) => sql as string);
  }

  async function runUpThenDown() {
    const query = jest.fn().mockResolvedValue(undefined);
    const queryRunner = { query } as unknown as QueryRunner;
    const migration = new CreateRenownAndReputation1791000000000();
    await migration.up(queryRunner);
    const upCount = query.mock.calls.length;
    await migration.down(queryRunner);
    return query.mock.calls.slice(upCount).map(([sql]) => sql as string);
  }

  it('replaces level/experience with a renown column on characters', async () => {
    const up = await runUp();

    expect(up).toEqual(
      expect.arrayContaining([
        expect.stringContaining('ALTER TABLE "characters" ADD COLUMN "renown"'),
        expect.stringContaining('DROP COLUMN "level"'),
        expect.stringContaining('DROP COLUMN "experience"'),
      ]),
    );
  });

  it('backfills renown from level BEFORE dropping the level column', async () => {
    const up = await runUp();

    const backfillIndex = up.findIndex((sql) =>
      sql.includes('LEAST(GREATEST("level", 1), 15)'),
    );
    const dropLevelIndex = up.findIndex((sql) =>
      sql.includes('DROP COLUMN "level"'),
    );

    expect(backfillIndex).toBeGreaterThanOrEqual(0);
    expect(dropLevelIndex).toBeGreaterThanOrEqual(0);
    // Reversing these two would silently discard every character's progression.
    expect(backfillIndex).toBeLessThan(dropLevelIndex);
  });

  it('adds the renown range constraint only AFTER the backfill has populated valid values', async () => {
    const up = await runUp();

    const backfillIndex = up.findIndex((sql) =>
      sql.includes('LEAST(GREATEST("level", 1), 15)'),
    );
    const constraintIndex = up.findIndex((sql) =>
      sql.includes('CHK_characters_renown'),
    );

    expect(backfillIndex).toBeGreaterThanOrEqual(0);
    expect(constraintIndex).toBeGreaterThanOrEqual(0);
    // ADD CONSTRAINT validates the whole table; running it before the backfill
    // would only pass by coincidence of the column DEFAULT being in range.
    expect(backfillIndex).toBeLessThan(constraintIndex);
  });

  it('drops required_level from item_definitions', async () => {
    const up = await runUp();

    expect(up).toEqual(
      expect.arrayContaining([
        expect.stringContaining(
          'ALTER TABLE "item_definitions" DROP COLUMN "required_level"',
        ),
      ]),
    );
  });

  it('rebuilds item_type_enum with exactly the five Slice 0.6.5 values, migrating existing rows', async () => {
    const up = await runUp();

    expect(up).toEqual(
      expect.arrayContaining([
        expect.stringContaining(
          `SET "type" = 'EQUIPMENT' WHERE "type" IN ('WEAPON', 'ARMOR')`,
        ),
        expect.stringContaining(
          `SET "type" = 'TRADE_GOOD' WHERE "type" = 'MATERIAL'`,
        ),
        expect.stringContaining('DROP TYPE "item_type_enum"'),
        expect.stringContaining(
          `CREATE TYPE "item_type_enum" AS ENUM ('EQUIPMENT', 'TRADE_GOOD', 'TROPHY', 'QUEST_ITEM', 'CONSUMABLE')`,
        ),
      ]),
    );
  });

  it('drops experience_granted from combat_rewards', async () => {
    const up = await runUp();

    expect(up).toEqual(
      expect.arrayContaining([
        expect.stringContaining(
          'ALTER TABLE "combat_rewards" DROP COLUMN "experience_granted"',
        ),
      ]),
    );
  });

  /**
   * XP is abolished outright (design R7), so the column goes with the concept.
   * It is NOT NULL with no default, so leaving it behind while the seed stops
   * supplying a value would fail every monster insert against a real database
   * -- a break no suite here can catch, since none of them connect to Postgres.
   */
  it('drops experience_reward from monster_definitions', async () => {
    const up = await runUp();

    expect(up).toEqual(
      expect.arrayContaining([
        expect.stringContaining(
          'ALTER TABLE "monster_definitions" DROP COLUMN "experience_reward"',
        ),
      ]),
    );
  });

  it('keeps silver_min and silver_max on monster_definitions', async () => {
    const up = await runUp();

    expect(up.join(' ')).not.toContain('"silver_min"');
    expect(up.join(' ')).not.toContain('"silver_max"');
  });

  it('creates all five new tables with their unique constraints', async () => {
    const up = await runUp();

    expect(up).toEqual(
      expect.arrayContaining([
        expect.stringContaining('CREATE TABLE "reputation_factions"'),
        expect.stringContaining(
          'CREATE UNIQUE INDEX "IDX_reputation_factions_key"',
        ),
        expect.stringContaining('CREATE TABLE "character_reputation"'),
        expect.stringContaining(
          'CREATE UNIQUE INDEX "IDX_character_reputation_character_faction" ON "character_reputation" ("character_id", "faction_id")',
        ),
        expect.stringContaining('CREATE TABLE "renown_milestone_definitions"'),
        expect.stringContaining(
          'CREATE UNIQUE INDEX "IDX_renown_milestone_definitions_key"',
        ),
        expect.stringContaining('CREATE TABLE "character_renown_milestones"'),
        expect.stringContaining(
          'CREATE UNIQUE INDEX "IDX_character_renown_milestones_character_milestone" ON "character_renown_milestones" ("character_id", "milestone_id")',
        ),
        expect.stringContaining('CREATE TABLE "turn_in_definitions"'),
        expect.stringContaining(
          'CREATE UNIQUE INDEX "IDX_turn_in_definitions_key"',
        ),
      ]),
    );
  });

  it('down() reverses every up() step in exact opposite order, dropping the five new tables first', async () => {
    const down = await runUpThenDown();

    expect(down).toEqual(
      expect.arrayContaining([
        expect.stringContaining('DROP TABLE "turn_in_definitions"'),
        expect.stringContaining('DROP TABLE "character_renown_milestones"'),
        expect.stringContaining('DROP TABLE "renown_milestone_definitions"'),
        expect.stringContaining('DROP TABLE "character_reputation"'),
        expect.stringContaining('DROP TABLE "reputation_factions"'),
        expect.stringContaining(
          'ALTER TABLE "monster_definitions" ADD COLUMN "experience_reward"',
        ),
        expect.stringContaining(
          'ALTER TABLE "combat_rewards" ADD COLUMN "experience_granted"',
        ),
        expect.stringContaining(
          'ALTER TABLE "item_definitions" ADD COLUMN "required_level"',
        ),
        expect.stringContaining('ALTER TABLE "characters" ADD COLUMN "level"'),
        expect.stringContaining(
          'ALTER TABLE "characters" ADD COLUMN "experience"',
        ),
        expect.stringContaining(
          'ALTER TABLE "characters" DROP COLUMN "renown"',
        ),
      ]),
    );
    const turnInDropIndex = down.findIndex((sql) =>
      sql.includes('DROP TABLE "turn_in_definitions"'),
    );
    const reputationFactionsDropIndex = down.findIndex((sql) =>
      sql.includes('DROP TABLE "reputation_factions"'),
    );

    expect(turnInDropIndex).toBeGreaterThanOrEqual(0);
    expect(reputationFactionsDropIndex).toBeGreaterThanOrEqual(0);
    // turn_in_definitions has FK dependencies on reputation_factions and
    // item_definitions that must be gone before those tables are touched.
    expect(turnInDropIndex).toBeLessThan(reputationFactionsDropIndex);
  });
});