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# TaskService class
#
# Used for creating tasks on task queue after certain user action
#
# Ex.
# TaskService.new.new_issue(issue, current_user)
#
class TaskService
# When create an issue we should:
#
# * create a task for assignee if issue is assigned
# * create a task for each mentioned user on issue
#
def new_issue(issue, current_user)
new_issuable(issue, current_user)
end
# When update an issue we should:
#
# * mark all pending tasks related to the issue for the current user as done
# * create a task for each new user mentioned on issue
#
def update_issue(issue, current_user)
update_issuable(issue, current_user)
end
# When close an issue we should:
#
# * mark all pending tasks related to the target for the current user as done
#
def close_issue(issue, current_user)
mark_pending_tasks_as_done(issue, current_user)
end
# When we reassign an issue we should:
#
# * create a pending task for new assignee if issue is assigned
#
def reassigned_issue(issue, current_user)
reassigned_issuable(issue, current_user)
end
# When create a merge request we should:
#
# * creates a pending task for assignee if merge request is assigned
# * create a task for each mentioned user on merge request
#
def new_merge_request(merge_request, current_user)
new_issuable(merge_request, current_user)
end
# When update a merge request we should:
#
# * mark all pending tasks related to the merge request for the current user as done
# * create a task for each new user mentioned on merge request
#
def update_merge_request(merge_request, current_user)
update_issuable(merge_request, current_user)
end
# When close a merge request we should:
#
# * mark all pending tasks related to the target for the current user as done
#
def close_merge_request(merge_request, current_user)
mark_pending_tasks_as_done(merge_request, current_user)
end
# When we reassign a merge request we should:
#
# * creates a pending task for new assignee if merge request is assigned
#
def reassigned_merge_request(merge_request, current_user)
reassigned_issuable(merge_request, current_user)
end
# When merge a merge request we should:
#
# * mark all pending tasks related to the target for the current user as done
#
def merge_merge_request(merge_request, current_user)
mark_pending_tasks_as_done(merge_request, current_user)
end
# When create a note we should:
#
# * mark all pending tasks related to the noteable for the note author as done
# * create a task for each mentioned user on note
#
def new_note(note)
# Skip system notes, like status changes and cross-references
return if note.system
project = note.project
target = note.noteable
author = note.author
mark_pending_tasks_as_done(target, author)
mentioned_users = build_mentioned_users(project, note, author)
mentioned_users.each do |user|
create_task(project, target, author, user, Task::MENTIONED, note)
end
end
# When update a note we should:
#
# * mark all pending tasks related to the noteable for the current user as done
# * create a task for each new user mentioned on note
#
def update_note(note, current_user)
# Skip system notes, like status changes and cross-references
return if note.system
project = note.project
target = note.noteable
author = current_user
mark_pending_tasks_as_done(target, author)
mentioned_users = build_mentioned_users(project, note, author)
mentioned_users.each do |user|
unless pending_tasks(mentioned_user, project, target, note: note, action: Task::MENTIONED).exists?
create_task(project, target, author, user, Task::MENTIONED, note)
end
end
end
private
def create_task(project, target, author, user, action, note = nil)
attributes = {
project: project,
user_id: user.id,
author_id: author.id,
target_id: target.id,
target_type: target.class.name,
action: action,
note: note
}
Task.create(attributes)
end
def build_mentioned_users(project, target, author)
mentioned_users = target.mentioned_users.select do |user|
user.can?(:read_project, project)
end
mentioned_users.delete(author)
mentioned_users.uniq
end
def mark_pending_tasks_as_done(target, user)
pending_tasks(user, target.project, target).update_all(state: :done)
end
def pending_tasks(user, project, target, options = {})
options.reverse_merge(
project: project,
target: target
)
user.tasks.pending.where(options)
end
def new_issuable(issuable, current_user)
project = issuable.project
target = issuable
author = issuable.author
if target.is_assigned? && target.assignee != current_user
create_task(project, target, author, target.assignee, Task::ASSIGNED)
end
mentioned_users = build_mentioned_users(project, target, author)
mentioned_users.delete(issuable.assignee)
mentioned_users.each do |mentioned_user|
create_task(project, target, author, mentioned_user, Task::MENTIONED)
end
end
def update_issuable(issuable, current_user)
project = issuable.project
author = current_user
mark_pending_tasks_as_done(issuable, author)
mentioned_users = build_mentioned_users(project, issuable, author)
mentioned_users.each do |mentioned_user|
unless pending_tasks(mentioned_user, project, issuable, action: Task::MENTIONED).exists?
create_task(project, issuable, author, mentioned_user, Task::MENTIONED)
end
end
end
def reassigned_issuable(issuable, current_user)
if issuable.assignee && issuable.assignee != current_user
create_task(issuable.project, issuable, current_user, issuable.assignee, Task::ASSIGNED)
end
end
end
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