package server_test

import (
	"bytes"
	"net/http"
	"testing"

	"github.com/lkysow/go-gitlab"
	. "github.com/petergtz/pegomock"
	"github.com/runatlantis/atlantis/server"
	. "github.com/runatlantis/atlantis/testing"
)

var parser = server.DefaultGitlabRequestParser{}

func TestValidate_InvalidSecret(t *testing.T) {
	t.Log("If the secret header is set and doesn't match expected an error is returned")
	RegisterMockTestingT(t)
	buf := bytes.NewBufferString("")
	req, err := http.NewRequest("POST", "http://localhost/event", buf)
	Ok(t, err)
	req.Header.Set("X-Gitlab-Token", "does-not-match")
	_, err = parser.Validate(req, []byte("secret"))
	Assert(t, err != nil, "should be an error")
	Equals(t, "header X-Gitlab-Token=does-not-match did not match expected secret", err.Error())
}

func TestValidate_ValidSecret(t *testing.T) {
	t.Log("If the secret header matches then the event is returned")
	RegisterMockTestingT(t)
	buf := bytes.NewBufferString(mergeEventJSON)
	req, err := http.NewRequest("POST", "http://localhost/event", buf)
	Ok(t, err)
	req.Header.Set("X-Gitlab-Token", "secret")
	req.Header.Set("X-Gitlab-Event", "Merge Request Hook")
	b, err := parser.Validate(req, []byte("secret"))
	Ok(t, err)
	Equals(t, "Gitlab Test", b.(gitlab.MergeEvent).Project.Name)
}

func TestValidate_NoSecret(t *testing.T) {
	t.Log("If there is no secret then we ignore the secret header and return the event")
	RegisterMockTestingT(t)
	buf := bytes.NewBufferString(mergeEventJSON)
	req, err := http.NewRequest("POST", "http://localhost/event", buf)
	Ok(t, err)
	req.Header.Set("X-Gitlab-Token", "random secret")
	req.Header.Set("X-Gitlab-Event", "Merge Request Hook")
	b, err := parser.Validate(req, nil)
	Ok(t, err)
	Equals(t, "Gitlab Test", b.(gitlab.MergeEvent).Project.Name)
}

func TestValidate_InvalidMergeEvent(t *testing.T) {
	t.Log("If the merge event is malformed there should be an error")
	RegisterMockTestingT(t)
	buf := bytes.NewBufferString("{")
	req, err := http.NewRequest("POST", "http://localhost/event", buf)
	Ok(t, err)
	req.Header.Set("X-Gitlab-Event", "Merge Request Hook")
	_, err = parser.Validate(req, nil)
	Assert(t, err != nil, "should be an error")
	Equals(t, "unexpected end of JSON input", err.Error())
}

func TestValidate_InvalidMergeCommentEvent(t *testing.T) {
	t.Log("If the merge comment event is malformed there should be an error")
	RegisterMockTestingT(t)
	buf := bytes.NewBufferString("{")
	req, err := http.NewRequest("POST", "http://localhost/event", buf)
	Ok(t, err)
	req.Header.Set("X-Gitlab-Event", "Note Hook")
	_, err = parser.Validate(req, nil)
	Assert(t, err != nil, "should be an error")
	Equals(t, "unexpected end of JSON input", err.Error())
}

func TestValidate_UnrecognizedEvent(t *testing.T) {
	t.Log("If the event is not one we care about we return nil")
	RegisterMockTestingT(t)
	buf := bytes.NewBufferString("")
	req, err := http.NewRequest("POST", "http://localhost/event", buf)
	Ok(t, err)
	req.Header.Set("X-Gitlab-Event", "Random Event")
	event, err := parser.Validate(req, nil)
	Ok(t, err)
	Equals(t, nil, event)
}

func TestValidate_ValidMergeEvent(t *testing.T) {
	t.Log("If the merge event is valid it should be returned")
	RegisterMockTestingT(t)
	buf := bytes.NewBufferString(mergeEventJSON)
	req, err := http.NewRequest("POST", "http://localhost/event", buf)
	Ok(t, err)
	req.Header.Set("X-Gitlab-Event", "Merge Request Hook")
	b, err := parser.Validate(req, nil)
	Ok(t, err)
	Equals(t, "Gitlab Test", b.(gitlab.MergeEvent).Project.Name)
	RegisterMockTestingT(t)
}

func TestValidate_ValidMergeCommentEvent(t *testing.T) {
	t.Log("If the merge comment event is valid it should be returned")
	RegisterMockTestingT(t)
	buf := bytes.NewBufferString(mergeCommentEventJSON)
	req, err := http.NewRequest("POST", "http://localhost/event", buf)
	Ok(t, err)
	req.Header.Set("X-Gitlab-Event", "Note Hook")
	b, err := parser.Validate(req, nil)
	Ok(t, err)
	Equals(t, "Gitlab Test", b.(gitlab.MergeCommentEvent).Project.Name)
	RegisterMockTestingT(t)
}

var mergeEventJSON = `{
  "object_kind": "merge_request",
  "user": {
    "name": "Administrator",
    "username": "root",
    "avatar_url": "http://www.gravatar.com/avatar/e64c7d89f26bd1972efa854d13d7dd61?s=40\u0026d=identicon"
  },
  "project": {
    "id": 1,
    "name":"Gitlab Test",
    "description":"Aut reprehenderit ut est.",
    "web_url":"http://example.com/gitlabhq/gitlab-test",
    "avatar_url":null,
    "git_ssh_url":"git@example.com:gitlabhq/gitlab-test.git",
    "git_http_url":"https://example.com/gitlabhq/gitlab-test.git",
    "namespace":"GitlabHQ",
    "visibility_level":20,
    "path_with_namespace":"gitlabhq/gitlab-test",
    "default_branch":"master",
    "homepage":"http://example.com/gitlabhq/gitlab-test",
    "url":"https://example.com/gitlabhq/gitlab-test.git",
    "ssh_url":"git@example.com:gitlabhq/gitlab-test.git",
    "http_url":"https://example.com/gitlabhq/gitlab-test.git"
  },
  "repository": {
    "name": "Gitlab Test",
    "url": "https://example.com/gitlabhq/gitlab-test.git",
    "description": "Aut reprehenderit ut est.",
    "homepage": "http://example.com/gitlabhq/gitlab-test"
  },
  "object_attributes": {
    "id": 99,
    "target_branch": "master",
    "source_branch": "ms-viewport",
    "source_project_id": 14,
    "author_id": 51,
    "assignee_id": 6,
    "title": "MS-Viewport",
    "created_at": "2013-12-03T17:23:34Z",
    "updated_at": "2013-12-03T17:23:34Z",
    "st_commits": null,
    "st_diffs": null,
    "milestone_id": null,
    "state": "opened",
    "merge_status": "unchecked",
    "target_project_id": 14,
    "iid": 1,
    "description": "",
    "source": {
      "name":"Awesome Project",
      "description":"Aut reprehenderit ut est.",
      "web_url":"http://example.com/awesome_space/awesome_project",
      "avatar_url":null,
      "git_ssh_url":"git@example.com:awesome_space/awesome_project.git",
      "git_http_url":"http://example.com/awesome_space/awesome_project.git",
      "namespace":"Awesome Space",
      "visibility_level":20,
      "path_with_namespace":"awesome_space/awesome_project",
      "default_branch":"master",
      "homepage":"http://example.com/awesome_space/awesome_project",
      "url":"http://example.com/awesome_space/awesome_project.git",
      "ssh_url":"git@example.com:awesome_space/awesome_project.git",
      "http_url":"http://example.com/awesome_space/awesome_project.git"
    },
    "target": {
      "name":"Awesome Project",
      "description":"Aut reprehenderit ut est.",
      "web_url":"http://example.com/awesome_space/awesome_project",
      "avatar_url":null,
      "git_ssh_url":"git@example.com:awesome_space/awesome_project.git",
      "git_http_url":"http://example.com/awesome_space/awesome_project.git",
      "namespace":"Awesome Space",
      "visibility_level":20,
      "path_with_namespace":"awesome_space/awesome_project",
      "default_branch":"master",
      "homepage":"http://example.com/awesome_space/awesome_project",
      "url":"http://example.com/awesome_space/awesome_project.git",
      "ssh_url":"git@example.com:awesome_space/awesome_project.git",
      "http_url":"http://example.com/awesome_space/awesome_project.git"
    },
    "last_commit": {
      "id": "da1560886d4f094c3e6c9ef40349f7d38b5d27d7",
      "message": "fixed readme",
      "timestamp": "2012-01-03T23:36:29+02:00",
      "url": "http://example.com/awesome_space/awesome_project/commits/da1560886d4f094c3e6c9ef40349f7d38b5d27d7",
      "author": {
        "name": "GitLab dev user",
        "email": "gitlabdev@dv6700.(none)"
      }
    },
    "work_in_progress": false,
    "url": "http://example.com/diaspora/merge_requests/1",
    "action": "open",
    "assignee": {
      "name": "User1",
      "username": "user1",
      "avatar_url": "http://www.gravatar.com/avatar/e64c7d89f26bd1972efa854d13d7dd61?s=40\u0026d=identicon"
    }
  },
  "labels": [{
    "id": 206,
    "title": "API",
    "color": "#ffffff",
    "project_id": 14,
    "created_at": "2013-12-03T17:15:43Z",
    "updated_at": "2013-12-03T17:15:43Z",
    "template": false,
    "description": "API related issues",
    "type": "ProjectLabel",
    "group_id": 41
  }],
  "changes": {
    "updated_by_id": [null, 1],
    "updated_at": ["2017-09-15 16:50:55 UTC", "2017-09-15 16:52:00 UTC"],
    "labels": {
      "previous": [{
        "id": 206,
        "title": "API",
        "color": "#ffffff",
        "project_id": 14,
        "created_at": "2013-12-03T17:15:43Z",
        "updated_at": "2013-12-03T17:15:43Z",
        "template": false,
        "description": "API related issues",
        "type": "ProjectLabel",
        "group_id": 41
      }],
      "current": [{
        "id": 205,
        "title": "Platform",
        "color": "#123123",
        "project_id": 14,
        "created_at": "2013-12-03T17:15:43Z",
        "updated_at": "2013-12-03T17:15:43Z",
        "template": false,
        "description": "Platform related issues",
        "type": "ProjectLabel",
        "group_id": 41
      }]
    }
  }
}`

var mergeCommentEventJSON = `{
  "object_kind": "note",
  "user": {
    "name": "Administrator",
    "username": "root",
    "avatar_url": "http://www.gravatar.com/avatar/e64c7d89f26bd1972efa854d13d7dd61?s=40\u0026d=identicon"
  },
  "project_id": 5,
  "project":{
    "id": 5,
    "name":"Gitlab Test",
    "description":"Aut reprehenderit ut est.",
    "web_url":"http://example.com/gitlabhq/gitlab-test",
    "avatar_url":null,
    "git_ssh_url":"git@example.com:gitlabhq/gitlab-test.git",
    "git_http_url":"https://example.com/gitlabhq/gitlab-test.git",
    "namespace":"Gitlab Org",
    "visibility_level":10,
    "path_with_namespace":"gitlabhq/gitlab-test",
    "default_branch":"master",
    "homepage":"http://example.com/gitlabhq/gitlab-test",
    "url":"https://example.com/gitlabhq/gitlab-test.git",
    "ssh_url":"git@example.com:gitlabhq/gitlab-test.git",
    "http_url":"https://example.com/gitlabhq/gitlab-test.git"
  },
  "repository":{
    "name": "Gitlab Test",
    "url": "http://localhost/gitlab-org/gitlab-test.git",
    "description": "Aut reprehenderit ut est.",
    "homepage": "http://example.com/gitlab-org/gitlab-test"
  },
  "object_attributes": {
    "id": 1244,
    "note": "This MR needs work.",
    "noteable_type": "MergeRequest",
    "author_id": 1,
    "created_at": "2015-05-17",
    "updated_at": "2015-05-17",
    "project_id": 5,
    "attachment": null,
    "line_code": null,
    "commit_id": "",
    "noteable_id": 7,
    "system": false,
    "st_diff": null,
    "url": "http://example.com/gitlab-org/gitlab-test/merge_requests/1#note_1244"
  },
  "merge_request": {
    "id": 7,
    "target_branch": "markdown",
    "source_branch": "master",
    "source_project_id": 5,
    "author_id": 8,
    "assignee_id": 28,
    "title": "Tempora et eos debitis quae laborum et.",
    "created_at": "2015-03-01 20:12:53 UTC",
    "updated_at": "2015-03-21 18:27:27 UTC",
    "milestone_id": 11,
    "state": "opened",
    "merge_status": "cannot_be_merged",
    "target_project_id": 5,
    "iid": 1,
    "description": "Et voluptas corrupti assumenda temporibus. Architecto cum animi eveniet amet asperiores. Vitae numquam voluptate est natus sit et ad id.",
    "position": 0,
    "source":{
      "name":"Gitlab Test",
      "description":"Aut reprehenderit ut est.",
      "web_url":"http://example.com/gitlab-org/gitlab-test",
      "avatar_url":null,
      "git_ssh_url":"git@example.com:gitlab-org/gitlab-test.git",
      "git_http_url":"https://example.com/gitlab-org/gitlab-test.git",
      "namespace":"Gitlab Org",
      "visibility_level":10,
      "path_with_namespace":"gitlab-org/gitlab-test",
      "default_branch":"master",
      "homepage":"http://example.com/gitlab-org/gitlab-test",
      "url":"https://example.com/gitlab-org/gitlab-test.git",
      "ssh_url":"git@example.com:gitlab-org/gitlab-test.git",
      "http_url":"https://example.com/gitlab-org/gitlab-test.git",
      "git_http_url":"https://example.com/gitlab-org/gitlab-test.git"
    },
    "target": {
      "name":"Gitlab Test",
      "description":"Aut reprehenderit ut est.",
      "web_url":"http://example.com/gitlabhq/gitlab-test",
      "avatar_url":null,
      "git_ssh_url":"git@example.com:gitlabhq/gitlab-test.git",
      "git_http_url":"https://example.com/gitlabhq/gitlab-test.git",
      "namespace":"Gitlab Org",
      "visibility_level":10,
      "path_with_namespace":"gitlabhq/gitlab-test",
      "default_branch":"master",
      "homepage":"http://example.com/gitlabhq/gitlab-test",
      "url":"https://example.com/gitlabhq/gitlab-test.git",
      "ssh_url":"git@example.com:gitlabhq/gitlab-test.git",
      "http_url":"https://example.com/gitlabhq/gitlab-test.git"
    },
    "last_commit": {
      "id": "562e173be03b8ff2efb05345d12df18815438a4b",
      "message": "Merge branch 'another-branch' into 'master'\n\nCheck in this test\n",
      "timestamp": "2002-10-02T10:00:00-05:00",
      "url": "http://example.com/gitlab-org/gitlab-test/commit/562e173be03b8ff2efb05345d12df18815438a4b",
      "author": {
        "name": "John Smith",
        "email": "john@example.com"
      }
    },
    "work_in_progress": false,
    "assignee": {
      "name": "User1",
      "username": "user1",
      "avatar_url": "http://www.gravatar.com/avatar/e64c7d89f26bd1972efa854d13d7dd61?s=40\u0026d=identicon"
    }
  }
}`