/*
  Copyright 2019-2022 Google LLC

  Licensed under the Apache License, Version 2.0 (the "License");
  you may not use this file except in compliance with the License.
  You may obtain a copy of the License at

      https://www.apache.org/licenses/LICENSE-2.0

  Unless required by applicable law or agreed to in writing, software
  distributed under the License is distributed on an "AS IS" BASIS,
  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  See the License for the specific language governing permissions and
  limitations under the License.
*/

/* global describe, it */

const testID = "PO032",
  assert = require("assert"),
  fs = require("fs"),
  util = require("util"),
  path = require("path"),
  bl = require("../../lib/package/bundleLinter.js"),
  plugin = require(bl.resolvePlugin(testID)),
  Policy = require("../../lib/package/Policy.js"),
  Dom = require("@xmldom/xmldom").DOMParser,
  rootDir = path.resolve(__dirname, "../fixtures/resources/PO032"),
  debug = require("debug")("apigeelint:" + testID);

const loadPolicy = (sourceDir, shortFileName) => {
  const fqPath = path.join(sourceDir, shortFileName),
    policyXml = fs.readFileSync(fqPath).toString("utf-8"),
    doc = new Dom().parseFromString(policyXml),
    p = new Policy(sourceDir, shortFileName, { bundletype: "apiproxy" }, doc);
  p.getElement = () => doc;
  return p;
};

describe(`${testID} - policy passes hygiene evaluation`, function () {
  let sourceDir = path.join(rootDir, "pass");
  let testOne = (shortFileName) => {
    let policy = loadPolicy(sourceDir, shortFileName);
    let policyType = policy.getType();
    it(`check ${shortFileName} passes`, () => {
      assert.notEqual(policyType, undefined, `${policyType} should be defined`);
      plugin.onPolicy(policy, (e, foundIssues) => {
        assert.equal(e, undefined, "should be undefined");
        assert.equal(foundIssues, false, "should be no issues");
        let messages = policy.getReport().messages;
        assert.ok(messages, "messages should exist");
        assert.equal(messages.length, 0, "unexpected number of messages");
      });
    });
  };

  const candidates = fs
    .readdirSync(sourceDir)
    .filter((shortFileName) => shortFileName.endsWith(".xml"));

  it(`checks that there are tests`, () => {
    assert.ok(candidates.length > 0, "tests should exist");
  });

  candidates.forEach(testOne);
});

describe(`${testID} - policy does not pass hygiene evaluation`, () => {
  let sourceDir = path.join(rootDir, "fail");
  const expectedErrorMessages = require(path.join(sourceDir, "messages.js"));
  let testOne = (shortFileName) => {
    let policy = loadPolicy(sourceDir, shortFileName);
    let policyType = policy.getType();
    it(`check ${shortFileName} throws appropriate error`, () => {
      assert.notEqual(policyType, undefined, `${policyType} should be defined`);
      plugin.onPolicy(policy, (e, foundIssues) => {
        assert.equal(undefined, e, "should be undefined");
        assert.equal(true, foundIssues, "should be issues");
        let messages = policy.getReport().messages;
        assert.ok(messages, "messages should exist");
        //console.log(util.format(messages));
        assert.equal(1, messages.length, "unexpected number of messages");
        assert.ok(messages[0].message, "did not find message member");
        let expected = expectedErrorMessages[policy.fileName];
        assert.ok(
          expected,
          "test configuration failure: did not find an expected message"
        );
        assert.equal(
          expected,
          messages[0].message,
          "did not find expected message"
        );
        debug(`message[0]: ${messages[0].message}`);
      });
    });
  };

  const candidates = fs
    .readdirSync(sourceDir)
    .filter((shortFileName) => shortFileName.endsWith(".xml"));

  it(`checks that there are tests`, () => {
    assert.ok(candidates.length > 0, "tests should exist");
  });

  candidates.forEach(testOne);
});
