api.txt

/api
	/group:
		GET: list of groups and my relation to group
		200:
		[{
			"idx": 1, "name": {"ko": "korean name", "en": "english name"}, "description": {"ko": "kor desc", "en": "en desc"},
			"is_pending": false,
			"is_member": true,
			"is_owner": true
		}, {...}]
		
		401: not logged in
		
	/group/123/apply:
		POST: apply to group 123

		200: success
		400: errors, eg. already applied, invalid group, etc.
		401: not logged in

	/group/123/pending:
		GET: list applications for group 123
		200:
		[{
			"uid": 1, "username": "hong ggildong"
		}, {...}]

		401: if not owner
		400: errors, eg. invalid group, etc.

	/group/123/members:
		GET: list of members in group 123
		same as applications
		(check if this returns 200 instead of a dedicated check-ownership endpoint?)

	/group/123/accept:
		POST: accept some applications for group 123
		[1,2,3,4,44]

		200: success
		400: error on at least one approval
		401: if not owner

	/group/123/reject:
		POST: reject some applications
		same as group/accept

	/group/123/leave:
		POST: leave a group

		200: success
		400: errors, eg. not in group, etc.

all endpoints 401 if not logged in