Added tag merging support, browsing tag from management window

client/src/api.ts

@@ -311,3 +311,11 @@ export interface DeleteTagResponse { }
 export function checkDeleteTagRequest(req: any): boolean {
     return true;
 }
+
+// Merge tag (POST).
+export const MergeTagEndpoint = '/tag/:id/merge/:toId';
+export interface MergeTagRequest { }
+export interface MergeTagResponse { }
+export function checkMergeTagRequest(req: any): boolean {
+    return true;
+}

client/src/components/windows/manage_tags/ManageTagMenu.tsx

@@ -35,6 +35,7 @@ export default function ManageTagMenu(props: {
     onDelete: () => void,
     onMove: (to: string | null) => void,
     onMergeInto: (to: string) => void,
+    onOpenInTab: () => void,
     tag: any,
     changedTags: any[], // Tags organized hierarchically with "children" fields
 }) {
@@ -49,6 +50,12 @@ export default function ManageTagMenu(props: {
         keepMounted
         onClose={props.onClose}
     >
+        <MenuItem
+            onClick={() => {
+                props.onClose();
+                props.onOpenInTab();
+            }}
+        >Browse</MenuItem>
         <MenuItem
             onClick={() => {
                 props.onClose();

client/src/components/windows/manage_tags/ManageTagsWindow.tsx

@@ -1,5 +1,5 @@
 import React, { useEffect, useState } from 'react';
-import { WindowState } from '../Windows';
+import { WindowState, newWindowReducer, WindowType } from '../Windows';
 import { Box, Typography, Chip, IconButton, useTheme, Button } from '@material-ui/core';
 import LoyaltyIcon from '@material-ui/icons/Loyalty';
 import ArrowRightIcon from '@material-ui/icons/ArrowRight';
@@ -9,6 +9,9 @@ import ControlTagChanges, { TagChange, TagChangeType, submitTagChanges } from '.
 import { queryTags } from '../../../lib/backend/queries';
 import NewTagMenu from './NewTagMenu';
 import { v4 as genUuid } from 'uuid';
+import { MainWindowStateActions } from '../../MainWindow';
+import LocalOfferIcon from '@material-ui/icons/LocalOffer';
+import { songGetters } from '../../../lib/songGetters';
 var _ = require('lodash');
 
 export interface ManageTagsWindowState extends WindowState {
@@ -108,6 +111,7 @@ export function SingleTag(props: {
     tag: any,
     prependElems: any[],
     dispatch: (action: any) => void,
+    mainDispatch: (action: any) => void,
     state: ManageTagsWindowState,
     changedTags: any[],
 }) {
@@ -156,6 +160,7 @@ export function SingleTag(props: {
             <TagChip transparent={true} label={tagLabel} />,
             <Typography variant="h5">/</Typography>]}
             dispatch={props.dispatch}
+            mainDispatch={props.mainDispatch}
             state={props.state}
             changedTags={props.changedTags}
         />)}
@@ -163,6 +168,20 @@ export function SingleTag(props: {
             position={menuPos}
             open={menuPos !== null}
             onClose={onCloseMenu}
+            onOpenInTab={() => {
+                props.mainDispatch({
+                    type: MainWindowStateActions.AddTab,
+                    tabState: {
+                        tabLabel: <><LocalOfferIcon />{tag.name}</>,
+                        tagId: tag.tagId,
+                        metadata: null,
+                        songGetters: songGetters,
+                        songsWithTag: null,
+                    },
+                    tabReducer: newWindowReducer[WindowType.Tag],
+                    tabType: WindowType.Tag,
+                })
+            }}
             onRename={(s: string) => {
                 props.dispatch({
                     type: ManageTagsWindowActions.SetPendingChanges,
@@ -388,6 +407,7 @@ export default function ManageTagsWindow(props: {
                         tag={tag}
                         prependElems={[]}
                         dispatch={props.dispatch}
+                        mainDispatch={props.mainDispatch}
                         state={props.state}
                         changedTags={changedTags}
                     />;

client/src/components/windows/manage_tags/TagChange.tsx

@@ -4,7 +4,7 @@ import { queryTags } from '../../../lib/backend/queries';
 import { QueryLeafBy, QueryLeafOp } from '../../../lib/query/Query';
 import DiscardChangesButton from '../../common/DiscardChangesButton';
 import SubmitChangesButton from '../../common/SubmitChangesButton';
-import { createTag, modifyTag, deleteTag } from '../../../lib/backend/tags';
+import { createTag, modifyTag, deleteTag, mergeTag } from '../../../lib/backend/tags';
 
 export enum TagChangeType {
     Delete = "Delete",
@@ -40,6 +40,7 @@ export async function submitTagChanges(changes: TagChange[]) {
         // Otherwise, look it up in the table.
         const parentId = change.parent ? getId(change.parent) : undefined;
         const numericId = change.id ? getId(change.id) : undefined;
+        const intoId = change.into ? getId(change.into) : undefined;
         switch (change.type) {
             case TagChangeType.Create:
                 if (!change.name) { throw new Error("Cannot create tag without name"); }
@@ -69,6 +70,11 @@ export async function submitTagChanges(changes: TagChange[]) {
                 if (!numericId) { throw new Error("Cannot delete tag with no numeric ID"); }
                 await deleteTag(numericId)
                 break;
+            case TagChangeType.MergeTo:
+                if (!numericId) { throw new Error("Cannot merge tag with no numeric ID"); }
+                if (!intoId) { throw new Error("Cannot merge tag into tag with no numeric ID"); }
+                await mergeTag(numericId, intoId);
+                break;
             default:
                 throw new Error("Unimplemented tag change");
         }

client/src/lib/backend/tags.tsx

@@ -43,3 +43,19 @@ export async function deleteTag(id: number) {
         throw new Error("Response to tag deletion not OK: " + JSON.stringify(response));
     }
 }
+
+export async function mergeTag(fromId: number, toId: number) {
+    const requestOpts = {
+        method: 'POST',
+    };
+
+    const response = await fetch(
+        (process.env.REACT_APP_BACKEND || "") + serverApi.MergeTagEndpoint
+            .replace(':id', fromId.toString())
+            .replace(':toId', toId.toString()),
+        requestOpts
+    );
+    if (!response.ok) {
+        throw new Error("Response to tag merge not OK: " + JSON.stringify(response));
+    }
+}

server/app.ts

@@ -16,6 +16,7 @@ import { CreateAlbumEndpointHandler } from './endpoints/CreateAlbumEndpointHandl
 import { ModifyAlbumEndpointHandler } from './endpoints/ModifyAlbumEndpointHandler';
 import { AlbumDetailsEndpointHandler } from './endpoints/AlbumDetailsEndpointHandler';
 import { DeleteTagEndpointHandler } from './endpoints/DeleteTagEndpointHandler';
+import { MergeTagEndpointHandler } from './endpoints/MergeTagEndpointHandler';
 import * as endpointTypes from './endpoints/types';
 
 const invokeHandler = (handler:endpointTypes.EndpointHandler, knex: Knex) => {
@@ -55,6 +56,7 @@ const SetupApp = (app: any, knex: Knex, apiBaseUrl: string) => {
     app.put(apiBaseUrl + api.ModifyAlbumEndpoint, invokeWithKnex(ModifyAlbumEndpointHandler));
     app.get(apiBaseUrl + api.AlbumDetailsEndpoint, invokeWithKnex(AlbumDetailsEndpointHandler));
     app.delete(apiBaseUrl + api.DeleteTagEndpoint, invokeWithKnex(DeleteTagEndpointHandler));
+    app.post(apiBaseUrl + api.MergeTagEndpoint, invokeWithKnex(MergeTagEndpointHandler));
 }
 
 export { SetupApp }

server/endpoints/MergeTagEndpointHandler.ts

@@ -0,0 +1,73 @@
+import * as api from '../../client/src/api';
+import { EndpointError, EndpointHandler, catchUnhandledErrors } from './types';
+import Knex from 'knex';
+
+export const MergeTagEndpointHandler: EndpointHandler = async (req: any, res: any, knex: Knex) => {
+    if (!api.checkMergeTagRequest(req)) {
+        const e: EndpointError = {
+            internalMessage: 'Invalid MergeTag request: ' + JSON.stringify(req.body),
+            httpStatus: 400
+        };
+        throw e;
+    }
+    const reqObject: api.DeleteTagRequest = req.body;
+
+    console.log("Merge Tag:", reqObject);
+    const fromId = req.params.id;
+    const toId = req.params.toId;
+
+    await knex.transaction(async (trx) => {
+        try {
+            // Start retrieving the "from" tag.
+            const fromTagPromise = trx.select('id')
+                .from('tags')
+                .where({ id: fromId })
+                .then((r: any) => (r && r[0]) ? r[0]['id'] : undefined)
+
+            // Start retrieving the "to" tag.
+            const toTagPromise = trx.select('id')
+                .from('tags')
+                .where({ id: toId })
+                .then((r: any) => (r && r[0]) ? r[0]['id'] : undefined)
+
+            // Wait for the requests to finish.
+            var [fromTag, toTag] = await Promise.all([fromTagPromise, toTagPromise]);
+
+            // Check that we found all objects we need.
+            if (!fromTag || !toTag) {
+                const e: EndpointError = {
+                    internalMessage: 'Source or target tag does not exist for MergeTag request: ' + JSON.stringify(req.body),
+                    httpStatus: 400
+                };
+                throw e;
+            }
+
+            // Assign new tag ID to any objects referencing the to-be-merged tag.
+            const cPromise = trx('tags')
+                .where({ 'parentId': fromId })
+                .update({ 'parentId': toId });
+            const sPromise = trx('songs_tags')
+                .where({ 'tagId': fromId })
+                .update({ 'tagId': toId });
+            const arPromise = trx('artists_tags')
+                .where({ 'tagId': fromId })
+                .update({ 'tagId': toId });
+            const alPromise = trx('albums_tags')
+                .where({ 'tagId': fromId })
+                .update({ 'tagId': toId });
+            await Promise.all([sPromise, arPromise, alPromise, cPromise]);
+
+            // Delete the original tag.
+            await trx('tags')
+                .where({ 'id': fromId })
+                .del();
+
+            // Respond to the request.
+            res.status(200).send();
+
+        } catch (e) {
+            catchUnhandledErrors(e);
+            trx.rollback();
+        }
+    })
+}