merge_requests.rb
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module API
# MergeRequest API
class MergeRequests < Grape::API
before { authenticate! }
resource :projects do
helpers do
def handle_merge_request_errors!(errors)
if errors[:project_access].any?
error!(errors[:project_access], 422)
elsif errors[:branch_conflict].any?
error!(errors[:branch_conflict], 422)
end
not_found!
end
def not_fork?(target_project_id, user_project)
target_project_id.nil? || target_project_id == user_project.id.to_s
end
def target_matches_fork(target_project_id,user_project)
user_project.forked? && user_project.forked_from_project.id.to_s == target_project_id
end
end
# List merge requests
#
# Parameters:
# id (required) - The ID of a project
#
# Example:
# GET /projects/:id/merge_requests
#
get ":id/merge_requests" do
authorize! :read_merge_request, user_project
present paginate(user_project.merge_requests), with: Entities::MergeRequest
end
# Show MR
#
# Parameters:
# id (required) - The ID of a project
# merge_request_id (required) - The ID of MR
#
# Example:
# GET /projects/:id/merge_request/:merge_request_id
#
get ":id/merge_request/:merge_request_id" do
merge_request = user_project.merge_requests.find(params[:merge_request_id])
authorize! :read_merge_request, merge_request
present merge_request, with: Entities::MergeRequest
end
# Create MR
#
# Parameters:
#
# id (required) - The ID of a project - this will be the source of the merge request
# source_branch (required) - The source branch
# target_branch (required) - The target branch
# target_project - The target project of the merge request defaults to the :id of the project
# assignee_id - Assignee user ID
# title (required) - Title of MR
# description - Description of MR
#
# Example:
# POST /projects/:id/merge_requests
#
post ":id/merge_requests" do
set_current_user_for_thread do
authorize! :write_merge_request, user_project
required_attributes! [:source_branch, :target_branch, :title]
attrs = attributes_for_keys [:source_branch, :target_branch, :assignee_id, :title, :target_project_id, :description]
merge_request = user_project.merge_requests.new(attrs)
merge_request.author = current_user
merge_request.source_project = user_project
target_project_id = attrs[:target_project_id]
if not_fork?(target_project_id, user_project)
merge_request.target_project = user_project
else
if target_matches_fork(target_project_id,user_project)
merge_request.target_project = Project.find_by(id: attrs[:target_project_id])
else
render_api_error!('(Bad Request) Specified target project that is not the source project, or the source fork of the project.', 400)
end
end
if merge_request.save
present merge_request, with: Entities::MergeRequest
else
handle_merge_request_errors! merge_request.errors
end
end
end
# Update MR
#
# Parameters:
# id (required) - The ID of a project
# merge_request_id (required) - ID of MR
# source_branch - The source branch
# target_branch - The target branch
# assignee_id - Assignee user ID
# title - Title of MR
# state_event - Status of MR. (close|reopen|merge)
# description - Description of MR
# Example:
# PUT /projects/:id/merge_request/:merge_request_id
#
put ":id/merge_request/:merge_request_id" do
set_current_user_for_thread do
attrs = attributes_for_keys [:source_branch, :target_branch, :assignee_id, :title, :state_event, :description]
merge_request = user_project.merge_requests.find(params[:merge_request_id])
authorize! :modify_merge_request, merge_request
if merge_request.update_attributes attrs
present merge_request, with: Entities::MergeRequest
else
handle_merge_request_errors! merge_request.errors
end
end
end
# Get a merge request's comments
#
# Parameters:
# id (required) - The ID of a project
# merge_request_id (required) - ID of MR
# Examples:
# GET /projects/:id/merge_request/:merge_request_id/comments
#
get ":id/merge_request/:merge_request_id/comments" do
merge_request = user_project.merge_requests.find(params[:merge_request_id])
authorize! :read_merge_request, merge_request
present paginate(merge_request.notes), with: Entities::MRNote
end
# Post comment to merge request
#
# Parameters:
# id (required) - The ID of a project
# merge_request_id (required) - ID of MR
# note (required) - Text of comment
# Examples:
# POST /projects/:id/merge_request/:merge_request_id/comments
#
post ":id/merge_request/:merge_request_id/comments" do
set_current_user_for_thread do
required_attributes! [:note]
merge_request = user_project.merge_requests.find(params[:merge_request_id])
note = merge_request.notes.new(note: params[:note], project_id: user_project.id)
note.author = current_user
if note.save
present note, with: Entities::MRNote
else
not_found!
end
end
end
end
end
end