feat: #11240, only show relevant users in flags assignee list

for user flags-> admins + all users who have `admin:users` privilege
for post flags -> admins + global mods + moderators of the category the post is in
refactor getModeratorUids function so it can be used for different privileges

src/categories/index.js

@@ -99,39 +99,7 @@ Categories.getModerators = async function (cid) {
 };
 
 Categories.getModeratorUids = async function (cids) {
-	// Only check active categories
-	const disabled = (await Categories.getCategoriesFields(cids, ['disabled'])).map(obj => obj.disabled);
-	// cids = cids.filter((_, idx) => !disabled[idx]);
-
-	const groupNames = cids.reduce((memo, cid) => {
-		memo.push(`cid:${cid}:privileges:moderate`);
-		memo.push(`cid:${cid}:privileges:groups:moderate`);
-		return memo;
-	}, []);
-
-	const memberSets = await groups.getMembersOfGroups(groupNames);
-	// Every other set is actually a list of user groups, not uids, so convert those to members
-	const sets = memberSets.reduce((memo, set, idx) => {
-		if (idx % 2) {
-			memo.groupNames.push(set);
-		} else {
-			memo.uids.push(set);
-		}
-
-		return memo;
-	}, { groupNames: [], uids: [] });
-
-	const uniqGroups = _.uniq(_.flatten(sets.groupNames));
-	const groupUids = await groups.getMembersOfGroups(uniqGroups);
-	const map = _.zipObject(uniqGroups, groupUids);
-	const moderatorUids = cids.map((cid, index) => {
-		if (disabled[index]) {
-			return [];
-		}
-
-		return _.uniq(sets.uids[index].concat(_.flatten(sets.groupNames[index].map(g => map[g]))));
-	});
-	return moderatorUids;
+	return await privileges.categories.getUidsWithPrivilege(cids, 'moderate');
 };
 
 Categories.getCategories = async function (cids, uid) {

src/controllers/mods.js

@@ -1,6 +1,9 @@
 'use strict';
 
+const _ = require('lodash');
+
 const user = require('../user');
+const groups = require('../groups');
 const posts = require('../posts');
 const flags = require('../flags');
 const analytics = require('../analytics');
@@ -110,7 +113,6 @@ modsController.flags.detail = async function (req, res, next) {
 		isAdminOrGlobalMod: user.isAdminOrGlobalMod(req.uid),
 		moderatedCids: user.getModeratedCids(req.uid),
 		flagData: flags.get(req.params.flagId),
-		assignees: user.getAdminsandGlobalModsandModerators(),
 		privileges: Promise.all(['global', 'admin'].map(async type => privileges[type].get(req.uid))),
 	});
 	results.privileges = { ...results.privileges[0], ...results.privileges[1] };
@@ -119,6 +121,28 @@ modsController.flags.detail = async function (req, res, next) {
 		return next(); // 404
 	}
 
+	async function getAssignees(flagData) {
+		let uids = [];
+		const [admins, globalMods] = await Promise.all([
+			groups.getMembers('administrators', 0, -1),
+			groups.getMembers('Global Moderators', 0, -1),
+		]);
+		if (flagData.type === 'user') {
+			uids = await privileges.admin.getUidsWithPrivilege('admin:users');
+			uids = _.uniq(admins.concat(uids));
+		} else if (flagData.type === 'post') {
+			const cid = await posts.getCidByPid(flagData.targetId);
+			if (!cid) {
+				return [];
+			}
+			uids = (await privileges.categories.getUidsWithPrivilege([cid], 'moderate'))[0];
+			uids = _.uniq(admins.concat(globalMods).concat(uids));
+		}
+		const userData = await user.getUsersData(uids);
+		return userData.filter(u => u && u.userslug);
+	}
+
+	const assignees = await getAssignees(results.flagData);
 	results.flagData.history = results.isAdminOrGlobalMod ? (await flags.getHistory(req.params.flagId)) : null;
 
 	if (results.flagData.type === 'user') {
@@ -128,7 +152,7 @@ modsController.flags.detail = async function (req, res, next) {
 	}
 
 	res.render('flags/detail', Object.assign(results.flagData, {
-		assignees: results.assignees,
+		assignees: assignees,
 		type_bool: ['post', 'user', 'empty'].reduce((memo, cur) => {
 			if (cur !== 'empty') {
 				memo[cur] = results.flagData.type === cur && (

src/privileges/admin.js

@@ -211,3 +211,8 @@ privsAdmin.groupPrivileges = async function (groupName) {
 	const groupPrivilegeList = await privsAdmin.getGroupPrivilegeList();
 	return await helpers.userOrGroupPrivileges(0, groupName, groupPrivilegeList);
 };
+
+privsAdmin.getUidsWithPrivilege = async function (privilege) {
+	const uidsByCid = await helpers.getUidsWithPrivilege([0], privilege);
+	return uidsByCid[0];
+};

src/privileges/categories.js

@@ -218,3 +218,7 @@ privsCategories.groupPrivileges = async function (cid, groupName) {
 	const groupPrivilegeList = await privsCategories.getGroupPrivilegeList();
 	return await helpers.userOrGroupPrivileges(cid, groupName, groupPrivilegeList);
 };
+
+privsCategories.getUidsWithPrivilege = async function (cids, privilege) {
+	return await helpers.getUidsWithPrivilege(cids, privilege);
+};

src/privileges/global.js

@@ -134,3 +134,8 @@ privsGlobal.groupPrivileges = async function (groupName) {
 	const groupPrivilegeList = await privsGlobal.getGroupPrivilegeList();
 	return await helpers.userOrGroupPrivileges(0, groupName, groupPrivilegeList);
 };
+
+privsGlobal.getUidsWithPrivilege = async function (privilege) {
+	const uidsByCid = await helpers.getUidsWithPrivilege([0], privilege);
+	return uidsByCid[0];
+};

src/privileges/helpers.js

@@ -6,6 +6,7 @@ const validator = require('validator');
 
 const groups = require('../groups');
 const user = require('../user');
+const categories = require('../categories');
 const plugins = require('../plugins');
 const translator = require('../translator');
 
@@ -189,4 +190,38 @@ helpers.userOrGroupPrivileges = async function (cid, uidOrGroup, privilegeList)
 	return _.zipObject(privilegeList, isMembers);
 };
 
+helpers.getUidsWithPrivilege = async (cids, privilege) => {
+	const disabled = (await categories.getCategoriesFields(cids, ['disabled'])).map(obj => obj.disabled);
+
+	const groupNames = cids.reduce((memo, cid) => {
+		memo.push(`cid:${cid}:privileges:${privilege}`);
+		memo.push(`cid:${cid}:privileges:groups:${privilege}`);
+		return memo;
+	}, []);
+
+	const memberSets = await groups.getMembersOfGroups(groupNames);
+	// Every other set is actually a list of user groups, not uids, so convert those to members
+	const sets = memberSets.reduce((memo, set, idx) => {
+		if (idx % 2) {
+			memo.groupNames.push(set);
+		} else {
+			memo.uids.push(set);
+		}
+
+		return memo;
+	}, { groupNames: [], uids: [] });
+
+	const uniqGroups = _.uniq(_.flatten(sets.groupNames));
+	const groupUids = await groups.getMembersOfGroups(uniqGroups);
+	const map = _.zipObject(uniqGroups, groupUids);
+	const uidsByCid = cids.map((cid, index) => {
+		if (disabled[index]) {
+			return [];
+		}
+
+		return _.uniq(sets.uids[index].concat(_.flatten(sets.groupNames[index].map(g => map[g]))));
+	});
+	return uidsByCid;
+};
+
 require('../promisify')(helpers);