import assert from "node:assert/strict";
import test from "node:test";
import {
  buildStructureTargetLabel,
  combineDataTypeForDatabase,
  createColumnDrafts,
  createIndexDrafts,
  getDataTypeOptions,
  normalizeDataTypeParams,
  parseExtraToColumnExtra,
  toColumnNames,
} from "../../apps/desktop/src/lib/tableStructureEditorState.ts";
import type { ColumnInfo, IndexInfo } from "../../apps/desktop/src/types/database.ts";

const columns: ColumnInfo[] = [
  {
    name: "id",
    data_type: "bigint",
    is_nullable: false,
    column_default: null,
    is_primary_key: true,
    extra: "auto_increment",
    comment: "identifier",
  },
  {
    name: "name",
    data_type: "varchar(120)",
    is_nullable: true,
    column_default: "'guest'",
    is_primary_key: false,
    extra: null,
    comment: null,
  },
];

const indexes: IndexInfo[] = [
  { name: "PRIMARY", columns: ["id"], is_unique: true, is_primary: true },
  { name: "idx_name", columns: ["name"], is_unique: false, is_primary: false },
];

test("creates editable column drafts from column metadata", () => {
  const drafts = createColumnDrafts(columns, "mysql");

  assert.deepEqual(
    drafts.map((draft) => ({
      id: draft.id,
      name: draft.name,
      dataType: draft.dataType,
      isNullable: draft.isNullable,
      defaultValue: draft.defaultValue,
      comment: draft.comment,
      isPrimaryKey: draft.isPrimaryKey,
      extra: draft.extra,
      originalPosition: draft.originalPosition,
      markedForDrop: draft.markedForDrop,
      originalName: draft.original?.name,
    })),
    [
      {
        id: "existing:id",
        name: "id",
        dataType: "bigint",
        isNullable: false,
        defaultValue: "",
        comment: "identifier",
        isPrimaryKey: true,
        extra: { autoIncrement: true },
        originalPosition: 0,
        markedForDrop: false,
        originalName: "id",
      },
      {
        id: "existing:name",
        name: "name",
        dataType: "varchar(120)",
        isNullable: true,
        defaultValue: "'guest'",
        comment: "",
        isPrimaryKey: false,
        extra: {},
        originalPosition: 1,
        markedForDrop: false,
        originalName: "name",
      },
    ],
  );
});

test("parses MySQL extra string to ColumnExtra", () => {
  assert.deepEqual(parseExtraToColumnExtra("auto_increment", "mysql"), { autoIncrement: true });
  assert.deepEqual(parseExtraToColumnExtra("on update CURRENT_TIMESTAMP", "mysql"), {
    onUpdateCurrentTimestamp: true,
  });
  assert.deepEqual(parseExtraToColumnExtra("auto_increment on update current_timestamp", "mysql"), {
    autoIncrement: true,
    onUpdateCurrentTimestamp: true,
  });
  assert.deepEqual(parseExtraToColumnExtra(null, "mysql"), {});
  assert.deepEqual(parseExtraToColumnExtra("", "mysql"), {});
});

test("parses PostgreSQL extra string to ColumnExtra", () => {
  assert.deepEqual(parseExtraToColumnExtra("generated by default as identity", "postgres"), {
    identity: { generation: "BY DEFAULT" },
  });
  assert.deepEqual(parseExtraToColumnExtra("GENERATED ALWAYS AS IDENTITY", "postgres"), {
    identity: { generation: "ALWAYS" },
  });
});

test("creates editable index drafts and splits pasted column lists", () => {
  const drafts = createIndexDrafts(indexes);

  assert.deepEqual(
    drafts.map((draft) => ({
      id: draft.id,
      name: draft.name,
      columns: draft.columns,
      isUnique: draft.isUnique,
      isPrimary: draft.isPrimary,
      originalName: draft.original?.name,
    })),
    [
      {
        id: "existing:PRIMARY",
        name: "PRIMARY",
        columns: ["id"],
        isUnique: true,
        isPrimary: true,
        originalName: "PRIMARY",
      },
      {
        id: "existing:idx_name",
        name: "idx_name",
        columns: ["name"],
        isUnique: false,
        isPrimary: false,
        originalName: "idx_name",
      },
    ],
  );
  assert.equal(toColumnNames(["id", "name"]), "id, name");
});

test("structure editor target label omits duplicate database and schema", () => {
  assert.equal(
    buildStructureTargetLabel("online-clickhouse", "testdb", "testdb", "users"),
    "online-clickhouse / testdb / users",
  );
  assert.equal(
    buildStructureTargetLabel("online-postgres", "app", "public", "users"),
    "online-postgres / app / public / users",
  );
});

test("normalizes temporal precision when combining data types", () => {
  assert.equal(combineDataTypeForDatabase("mysql", "timestamp", "255"), "timestamp");
  assert.equal(combineDataTypeForDatabase("mysql", "timestamp", "3"), "timestamp(3)");
  assert.equal(combineDataTypeForDatabase("mysql", "varchar", "255"), "varchar(255)");
  assert.equal(normalizeDataTypeParams("oracle", "timestamp", "9"), "9");
  assert.equal(normalizeDataTypeParams("oracle", "timestamp", "10"), "");
});

test("returns data type options for compatible table structure editors", () => {
  assert.deepEqual(getDataTypeOptions("dameng"), getDataTypeOptions("oracle"));
  assert.deepEqual(getDataTypeOptions("gaussdb"), getDataTypeOptions("postgres"));
  assert.deepEqual(getDataTypeOptions("doris"), getDataTypeOptions("mysql"));
  assert.equal(getDataTypeOptions("dameng").includes("varchar2"), true);
  assert.equal(getDataTypeOptions("sqlserver").includes("nvarchar"), true);
});