VALID_TOKEN = "0123456789abcdef"
INVALID_TOKEN = "0000000000000000"

describe GitHubChangelogGenerator::OctoFetcher do
  let(:options) do
    {
      :user    => "skywinder",
      :project => "changelog_test",
    }
  end

  let(:fetcher) { GitHubChangelogGenerator::OctoFetcher.new(options) }


  describe "#fetch_github_token" do
    token = GitHubChangelogGenerator::OctoFetcher::CHANGELOG_GITHUB_TOKEN
    context "when token in ENV exist" do
      before { stub_const("ENV", ENV.to_hash.merge(token => VALID_TOKEN)) }
      subject { fetcher.send(:fetch_github_token) }
      it { is_expected.to eq(VALID_TOKEN) }
    end

    context "when token in ENV is nil" do
      before { stub_const("ENV", ENV.to_hash.merge(token => nil)) }
      subject { fetcher.send(:fetch_github_token) }
      it { is_expected.to be_nil }
    end

    context "when token in options and ENV is nil" do
      let(:options) { { :token => VALID_TOKEN } }

      before do
        stub_const("ENV", ENV.to_hash.merge(token => nil))
      end

      subject { fetcher.send(:fetch_github_token) }
      it { is_expected.to eq(VALID_TOKEN) }
    end

    context "when token in options and ENV specified" do
      let(:options) { { :token => VALID_TOKEN } }

      before do
        stub_const("ENV", ENV.to_hash.merge(token => "no_matter_what"))
      end

      subject { fetcher.send(:fetch_github_token) }
      it { is_expected.to eq(VALID_TOKEN) }
    end
  end

  describe "#get_all_tags" do
    context "when github_fetch_tags returns tags" do
      it "returns tags" do
        mock_tags = ['tag']
        allow(fetcher).to receive(:github_fetch_tags).and_return(mock_tags)
        expect(fetcher.get_all_tags).to eq(mock_tags)
      end
    end
  end

  describe "#github_fetch_tags" do
    context "when wrong token provided" do
      use_vcr_cassette

      let(:options) do
        {
          :user    => "skywinder",
          :project => "changelog_test",
          :token   => INVALID_TOKEN
        }
      end

      it "should raise Unauthorized error" do
        expect { fetcher.github_fetch_tags }.to raise_error SystemExit, "Error: wrong GitHub token"
      end
    end

    context "when API call is valid" do
      use_vcr_cassette

      it "should return tags" do
        expected_tags = [{"name"=>"v0.0.3", "zipball_url"=>"https://api.github.com/repos/skywinder/changelog_test/zipball/v0.0.3", "tarball_url"=>"https://api.github.com/repos/skywinder/changelog_test/tarball/v0.0.3", "commit"=>{"sha"=>"a0cba2b1a1ea9011ab07ee1ac140ba5a5eb8bd90", "url"=>"https://api.github.com/repos/skywinder/changelog_test/commits/a0cba2b1a1ea9011ab07ee1ac140ba5a5eb8bd90"}}, {"name"=>"v0.0.2", "zipball_url"=>"https://api.github.com/repos/skywinder/changelog_test/zipball/v0.0.2", "tarball_url"=>"https://api.github.com/repos/skywinder/changelog_test/tarball/v0.0.2", "commit"=>{"sha"=>"9b35bb13dcd15b68e7bcbf10cde5eb937a54f710", "url"=>"https://api.github.com/repos/skywinder/changelog_test/commits/9b35bb13dcd15b68e7bcbf10cde5eb937a54f710"}}, {"name"=>"v0.0.1", "zipball_url"=>"https://api.github.com/repos/skywinder/changelog_test/zipball/v0.0.1", "tarball_url"=>"https://api.github.com/repos/skywinder/changelog_test/tarball/v0.0.1", "commit"=>{"sha"=>"4c2d6d1ed58bdb24b870dcb5d9f2ceed0283d69d", "url"=>"https://api.github.com/repos/skywinder/changelog_test/commits/4c2d6d1ed58bdb24b870dcb5d9f2ceed0283d69d"}}, {"name"=>"0.0.4", "zipball_url"=>"https://api.github.com/repos/skywinder/changelog_test/zipball/0.0.4", "tarball_url"=>"https://api.github.com/repos/skywinder/changelog_test/tarball/0.0.4", "commit"=>{"sha"=>"ece0c3ab7142b21064b885061c55ede00ef6ce94", "url"=>"https://api.github.com/repos/skywinder/changelog_test/commits/ece0c3ab7142b21064b885061c55ede00ef6ce94"}}]

        expect(fetcher.github_fetch_tags).to eq(expected_tags)
      end

      it "should return tags count" do
        tags = fetcher.github_fetch_tags
        expect(tags.size).to eq(4)
      end
    end
  end


  describe "#fetch_closed_issues_and_pr" do
    context "when API call is valid" do
      use_vcr_cassette


      it "returns issues" do
        issues, pull_requests = fetcher.fetch_closed_issues_and_pr
        expect(issues.size).to eq(7)
        expect(pull_requests.size).to eq(14)
      end

      it "returns issue with proper key/values" do
        issues, pull_requests = fetcher.fetch_closed_issues_and_pr
        expected_issue = {"url"=>"https://api.github.com/repos/skywinder/changelog_test/issues/14", "repository_url"=>"https://api.github.com/repos/skywinder/changelog_test", "labels_url"=>"https://api.github.com/repos/skywinder/changelog_test/issues/14/labels{/name}", "comments_url"=>"https://api.github.com/repos/skywinder/changelog_test/issues/14/comments", "events_url"=>"https://api.github.com/repos/skywinder/changelog_test/issues/14/events", "html_url"=>"https://github.com/skywinder/changelog_test/issues/14", "id"=>95419412, "number"=>14, "title"=>"Issue closed from commit from PR", "user"=>{"login"=>"skywinder", "id"=>3356474, "avatar_url"=>"https://avatars.githubusercontent.com/u/3356474?v=3", "gravatar_id"=>"", "url"=>"https://api.github.com/users/skywinder", "html_url"=>"https://github.com/skywinder", "followers_url"=>"https://api.github.com/users/skywinder/followers", "following_url"=>"https://api.github.com/users/skywinder/following{/other_user}", "gists_url"=>"https://api.github.com/users/skywinder/gists{/gist_id}", "starred_url"=>"https://api.github.com/users/skywinder/starred{/owner}{/repo}", "subscriptions_url"=>"https://api.github.com/users/skywinder/subscriptions", "organizations_url"=>"https://api.github.com/users/skywinder/orgs", "repos_url"=>"https://api.github.com/users/skywinder/repos", "events_url"=>"https://api.github.com/users/skywinder/events{/privacy}", "received_events_url"=>"https://api.github.com/users/skywinder/received_events", "type"=>"User", "site_admin"=>false}, "labels"=>[], "state"=>"closed", "locked"=>false, "assignee"=>nil, "milestone"=>nil, "comments"=>0, "created_at"=>"2015-07-16T12:06:08Z", "updated_at"=>"2015-07-16T12:21:42Z", "closed_at"=>"2015-07-16T12:21:42Z", "body"=>""}
        # Convert times to Time
        expected_issue.each_pair do |k,v|
          if v =~ /^2015-/
            expected_issue[k] = Time.parse(v)
          end
        end

        expect(issues.first).to eq(expected_issue)
      end

      it "returns pull request with proper key/values" do
        issues, pull_requests = fetcher.fetch_closed_issues_and_pr
        expected_pr = {"url"=>"https://api.github.com/repos/skywinder/changelog_test/issues/21", "repository_url"=>"https://api.github.com/repos/skywinder/changelog_test", "labels_url"=>"https://api.github.com/repos/skywinder/changelog_test/issues/21/labels{/name}", "comments_url"=>"https://api.github.com/repos/skywinder/changelog_test/issues/21/comments", "events_url"=>"https://api.github.com/repos/skywinder/changelog_test/issues/21/events", "html_url"=>"https://github.com/skywinder/changelog_test/pull/21", "id"=>124925759, "number"=>21, "title"=>"Merged br (should appear in change log with  #20)", "user"=>{"login"=>"skywinder", "id"=>3356474, "avatar_url"=>"https://avatars.githubusercontent.com/u/3356474?v=3", "gravatar_id"=>"", "url"=>"https://api.github.com/users/skywinder", "html_url"=>"https://github.com/skywinder", "followers_url"=>"https://api.github.com/users/skywinder/followers", "following_url"=>"https://api.github.com/users/skywinder/following{/other_user}", "gists_url"=>"https://api.github.com/users/skywinder/gists{/gist_id}", "starred_url"=>"https://api.github.com/users/skywinder/starred{/owner}{/repo}", "subscriptions_url"=>"https://api.github.com/users/skywinder/subscriptions", "organizations_url"=>"https://api.github.com/users/skywinder/orgs", "repos_url"=>"https://api.github.com/users/skywinder/repos", "events_url"=>"https://api.github.com/users/skywinder/events{/privacy}", "received_events_url"=>"https://api.github.com/users/skywinder/received_events", "type"=>"User", "site_admin"=>false}, "labels"=>[], "state"=>"closed", "locked"=>false, "assignee"=>nil, "milestone"=>nil, "comments"=>0, "created_at"=>"2016-01-05T09:24:08Z", "updated_at"=>"2016-01-05T09:26:53Z", "closed_at"=>"2016-01-05T09:24:27Z", "pull_request"=>{"url"=>"https://api.github.com/repos/skywinder/changelog_test/pulls/21", "html_url"=>"https://github.com/skywinder/changelog_test/pull/21", "diff_url"=>"https://github.com/skywinder/changelog_test/pull/21.diff", "patch_url"=>"https://github.com/skywinder/changelog_test/pull/21.patch"}, "body"=>"to test https://github.com/skywinder/github-changelog-generator/pull/305\r\nshould appear in change log with #20"}
        # Convert times to Time
        expected_pr.each_pair do |k,v|
          if v =~ /^2016-01/
            expected_pr[k] = Time.parse(v)
          end
        end

        expect(pull_requests.first).to eq(expected_pr)
      end


      it "returns issues with labels" do
        issues, pull_requests = fetcher.fetch_closed_issues_and_pr
        expected = [[], [], ["Bug"], [], ["enhancement"], ["some label"], []]
        expect(issues.map{|i| i['labels'].map{|l| l['name']} }).to eq(expected)
      end

      it "returns pull_requests with labels" do
        issues, pull_requests = fetcher.fetch_closed_issues_and_pr
        expected = [[], [], [], [], [], ["enhancement"], [], [], ["invalid"], [], [], [], [], ["invalid"]]
        expect(pull_requests.map{|i| i['labels'].map{|l| l['name']} }).to eq(expected)
      end
    end
  end

  describe "#fetch_closed_pull_requests" do
    context "when API call is valid" do
      use_vcr_cassette

      it "returns pull requests" do
        pull_requests = fetcher.fetch_closed_pull_requests
        expect(pull_requests.size).to eq(14)
      end

      it "returns correct pull request keys" do
        pull_requests = fetcher.fetch_closed_pull_requests

        pr = pull_requests.first
        expect(pr.keys).to eq(["url", "id", "html_url", "diff_url", "patch_url", "issue_url", "number", "state", "locked", "title", "user", "body", "created_at", "updated_at", "closed_at", "merged_at", "merge_commit_sha", "assignee", "milestone", "commits_url", "review_comments_url", "review_comment_url", "comments_url", "statuses_url", "head", "base", "_links"])
      end
    end
  end


  describe "#fetch_events_async" do
    context "when API call is valid" do
      use_vcr_cassette

      it "populates issues" do
        issues = [{"url"=>"https://api.github.com/repos/skywinder/changelog_test/issues/14", "repository_url"=>"https://api.github.com/repos/skywinder/changelog_test", "labels_url"=>"https://api.github.com/repos/skywinder/changelog_test/issues/14/labels{/name}", "comments_url"=>"https://api.github.com/repos/skywinder/changelog_test/issues/14/comments", "events_url"=>"https://api.github.com/repos/skywinder/changelog_test/issues/14/events", "html_url"=>"https://github.com/skywinder/changelog_test/issues/14", "id"=>95419412, "number"=>14, "title"=>"Issue closed from commit from PR", "user"=>{"login"=>"skywinder", "id"=>3356474, "avatar_url"=>"https://avatars.githubusercontent.com/u/3356474?v=3", "gravatar_id"=>"", "url"=>"https://api.github.com/users/skywinder", "html_url"=>"https://github.com/skywinder", "followers_url"=>"https://api.github.com/users/skywinder/followers", "following_url"=>"https://api.github.com/users/skywinder/following{/other_user}", "gists_url"=>"https://api.github.com/users/skywinder/gists{/gist_id}", "starred_url"=>"https://api.github.com/users/skywinder/starred{/owner}{/repo}", "subscriptions_url"=>"https://api.github.com/users/skywinder/subscriptions", "organizations_url"=>"https://api.github.com/users/skywinder/orgs", "repos_url"=>"https://api.github.com/users/skywinder/repos", "events_url"=>"https://api.github.com/users/skywinder/events{/privacy}", "received_events_url"=>"https://api.github.com/users/skywinder/received_events", "type"=>"User", "site_admin"=>false}, "labels"=>[], "state"=>"closed", "locked"=>false, "assignee"=>nil, "milestone"=>nil, "comments"=>0, "created_at"=>"2015-07-16T12:06:08Z", "updated_at"=>"2015-07-16T12:21:42Z", "closed_at"=>"2015-07-16T12:21:42Z", "body"=>""}]

        # Check that they are blank to begin with
        expect(issues.first[:events]).to be_nil

        fetcher.fetch_events_async(issues)
        issue_events = issues.first[:events]

        expected_events = [{"id"=>357462189, "url"=>"https://api.github.com/repos/skywinder/changelog_test/issues/events/357462189", "actor"=>{"login"=>"skywinder", "id"=>3356474, "avatar_url"=>"https://avatars.githubusercontent.com/u/3356474?v=3", "gravatar_id"=>"", "url"=>"https://api.github.com/users/skywinder", "html_url"=>"https://github.com/skywinder", "followers_url"=>"https://api.github.com/users/skywinder/followers", "following_url"=>"https://api.github.com/users/skywinder/following{/other_user}", "gists_url"=>"https://api.github.com/users/skywinder/gists{/gist_id}", "starred_url"=>"https://api.github.com/users/skywinder/starred{/owner}{/repo}", "subscriptions_url"=>"https://api.github.com/users/skywinder/subscriptions", "organizations_url"=>"https://api.github.com/users/skywinder/orgs", "repos_url"=>"https://api.github.com/users/skywinder/repos", "events_url"=>"https://api.github.com/users/skywinder/events{/privacy}", "received_events_url"=>"https://api.github.com/users/skywinder/received_events", "type"=>"User", "site_admin"=>false}, "event"=>"referenced", "commit_id"=>"decfe840d1a1b86e0c28700de5362d3365a29555", "commit_url"=>"https://api.github.com/repos/skywinder/changelog_test/commits/decfe840d1a1b86e0c28700de5362d3365a29555", "created_at"=>"2015-07-16T12:21:16Z"}, {"id"=>357462542, "url"=>"https://api.github.com/repos/skywinder/changelog_test/issues/events/357462542", "actor"=>{"login"=>"skywinder", "id"=>3356474, "avatar_url"=>"https://avatars.githubusercontent.com/u/3356474?v=3", "gravatar_id"=>"", "url"=>"https://api.github.com/users/skywinder", "html_url"=>"https://github.com/skywinder", "followers_url"=>"https://api.github.com/users/skywinder/followers", "following_url"=>"https://api.github.com/users/skywinder/following{/other_user}", "gists_url"=>"https://api.github.com/users/skywinder/gists{/gist_id}", "starred_url"=>"https://api.github.com/users/skywinder/starred{/owner}{/repo}", "subscriptions_url"=>"https://api.github.com/users/skywinder/subscriptions", "organizations_url"=>"https://api.github.com/users/skywinder/orgs", "repos_url"=>"https://api.github.com/users/skywinder/repos", "events_url"=>"https://api.github.com/users/skywinder/events{/privacy}", "received_events_url"=>"https://api.github.com/users/skywinder/received_events", "type"=>"User", "site_admin"=>false}, "event"=>"closed", "commit_id"=>"decfe840d1a1b86e0c28700de5362d3365a29555", "commit_url"=>"https://api.github.com/repos/skywinder/changelog_test/commits/decfe840d1a1b86e0c28700de5362d3365a29555", "created_at"=>"2015-07-16T12:21:42Z"}]

        # Convert times to Time
        expected_events.map! do |event|
          event.each_pair do |k, v|
            if v =~ /^201[56]-/
              event[k] = Time.parse(v)
            end
          end
        end

        expect(issue_events).to eq(expected_events)
      end

    end
  end


  describe "#fetch_date_of_tag" do
    context "when API call is valid" do
      use_vcr_cassette

      it "returns date" do
        tag = {"name"=>"v0.0.3", "zipball_url"=>"https://api.github.com/repos/skywinder/changelog_test/zipball/v0.0.3", "tarball_url"=>"https://api.github.com/repos/skywinder/changelog_test/tarball/v0.0.3", "commit"=>{"sha"=>"a0cba2b1a1ea9011ab07ee1ac140ba5a5eb8bd90", "url"=>"https://api.github.com/repos/skywinder/changelog_test/commits/a0cba2b1a1ea9011ab07ee1ac140ba5a5eb8bd90"}}
        dt = fetcher.fetch_date_of_tag(tag)
        expect(dt).to eq(Time.parse("2015-03-04 19:01:48 UTC"))
      end

    end
  end


  describe "#fetch_commit" do
    context "when API call is valid" do
      use_vcr_cassette

      it "returns commit" do
        event = {"id"=>357462189, "url"=>"https://api.github.com/repos/skywinder/changelog_test/issues/events/357462189", "actor"=>{"login"=>"skywinder", "id"=>3356474, "avatar_url"=>"https://avatars.githubusercontent.com/u/3356474?v=3", "gravatar_id"=>"", "url"=>"https://api.github.com/users/skywinder", "html_url"=>"https://github.com/skywinder", "followers_url"=>"https://api.github.com/users/skywinder/followers", "following_url"=>"https://api.github.com/users/skywinder/following{/other_user}", "gists_url"=>"https://api.github.com/users/skywinder/gists{/gist_id}", "starred_url"=>"https://api.github.com/users/skywinder/starred{/owner}{/repo}", "subscriptions_url"=>"https://api.github.com/users/skywinder/subscriptions", "organizations_url"=>"https://api.github.com/users/skywinder/orgs", "repos_url"=>"https://api.github.com/users/skywinder/repos", "events_url"=>"https://api.github.com/users/skywinder/events{/privacy}", "received_events_url"=>"https://api.github.com/users/skywinder/received_events", "type"=>"User", "site_admin"=>false}, "event"=>"referenced", "commit_id"=>"decfe840d1a1b86e0c28700de5362d3365a29555", "commit_url"=>"https://api.github.com/repos/skywinder/changelog_test/commits/decfe840d1a1b86e0c28700de5362d3365a29555", "created_at"=>"2015-07-16T12:21:16Z"}
        commit = fetcher.fetch_commit(event)

        expectations = [
          ["sha", "decfe840d1a1b86e0c28700de5362d3365a29555"],
          ["url",
           "https://api.github.com/repos/skywinder/changelog_test/commits/decfe840d1a1b86e0c28700de5362d3365a29555"],
          # OLD API: "https://api.github.com/repos/skywinder/changelog_test/git/commits/decfe840d1a1b86e0c28700de5362d3365a29555"],
          ["html_url",
           "https://github.com/skywinder/changelog_test/commit/decfe840d1a1b86e0c28700de5362d3365a29555"],
          ["author",
           {"login"=>"skywinder", "id"=>3356474, "avatar_url"=>"https://avatars.githubusercontent.com/u/3356474?v=3", "gravatar_id"=>"", "url"=>"https://api.github.com/users/skywinder", "html_url"=>"https://github.com/skywinder", "followers_url"=>"https://api.github.com/users/skywinder/followers", "following_url"=>"https://api.github.com/users/skywinder/following{/other_user}", "gists_url"=>"https://api.github.com/users/skywinder/gists{/gist_id}", "starred_url"=>"https://api.github.com/users/skywinder/starred{/owner}{/repo}", "subscriptions_url"=>"https://api.github.com/users/skywinder/subscriptions", "organizations_url"=>"https://api.github.com/users/skywinder/orgs", "repos_url"=>"https://api.github.com/users/skywinder/repos", "events_url"=>"https://api.github.com/users/skywinder/events{/privacy}", "received_events_url"=>"https://api.github.com/users/skywinder/received_events", "type"=>"User", "site_admin"=>false}],
          ["committer",
           {"login"=>"skywinder", "id"=>3356474, "avatar_url"=>"https://avatars.githubusercontent.com/u/3356474?v=3", "gravatar_id"=>"", "url"=>"https://api.github.com/users/skywinder", "html_url"=>"https://github.com/skywinder", "followers_url"=>"https://api.github.com/users/skywinder/followers", "following_url"=>"https://api.github.com/users/skywinder/following{/other_user}", "gists_url"=>"https://api.github.com/users/skywinder/gists{/gist_id}", "starred_url"=>"https://api.github.com/users/skywinder/starred{/owner}{/repo}", "subscriptions_url"=>"https://api.github.com/users/skywinder/subscriptions", "organizations_url"=>"https://api.github.com/users/skywinder/orgs", "repos_url"=>"https://api.github.com/users/skywinder/repos", "events_url"=>"https://api.github.com/users/skywinder/events{/privacy}", "received_events_url"=>"https://api.github.com/users/skywinder/received_events", "type"=>"User", "site_admin"=>false}],
          ["parents",
           [{"sha"=>"7ec095e5e3caceacedabf44d0b9b10da17c92e51",
             "url"=>
               "https://api.github.com/repos/skywinder/changelog_test/commits/7ec095e5e3caceacedabf44d0b9b10da17c92e51",
             # OLD API: "https://api.github.com/repos/skywinder/changelog_test/git/commits/7ec095e5e3caceacedabf44d0b9b10da17c92e51",
             "html_url"=>
               "https://github.com/skywinder/changelog_test/commit/7ec095e5e3caceacedabf44d0b9b10da17c92e51"}]
          ]
        ]

        expectations.each do |property, val|
          expect(commit[property]).to eq(val)
        end

      end

    end
  end

end