| 1 | /** |
| 2 | * Copyright (c) Meta Platforms, Inc. and affiliates. |
| 3 | * |
| 4 | * This source code is licensed under the MIT license found in the |
| 5 | * LICENSE file in the root directory of this source tree. |
| 6 | */ |
| 7 | |
| 8 | import type {RepoInfo} from './types'; |
| 9 | |
| 10 | import {atom} from 'jotai'; |
| 11 | import serverAPI from './ClientToServerAPI'; |
| 12 | import {writeAtom} from './jotaiUtils'; |
| 13 | import {repositoryInfo} from './serverAPIState'; |
| 14 | import {registerDisposable} from './utils'; |
| 15 | |
| 16 | /** |
| 17 | * Hidden master branch config fetched from sitevar. |
| 18 | * Maps OD type to list of repo paths where master should be hidden. |
| 19 | * Example: {'instagram_www': ['fbsource/fbcode/instagram-server', 'fbsource/www']} |
| 20 | */ |
| 21 | export const hiddenMasterBranchConfigAtom = atom<Record<string, Array<string>> | null>(null); |
| 22 | |
| 23 | /** |
| 24 | * OD type fetched once on startup |
| 25 | */ |
| 26 | const odTypeAtom = atom<string | null>(null); |
| 27 | |
| 28 | /** |
| 29 | * Current working directory from server |
| 30 | */ |
| 31 | const cwdAtom = atom<string>(''); |
| 32 | |
| 33 | /** |
| 34 | * Computed atom that determines if master branch should be hidden |
| 35 | * based on the fetched config, OD type, and current repo path. |
| 36 | */ |
| 37 | export const shouldHideMasterAtom = atom(get => { |
| 38 | const config = get(hiddenMasterBranchConfigAtom); |
| 39 | const odType = get(odTypeAtom); |
| 40 | const cwd = get(cwdAtom); |
| 41 | const repoInfo = get(repositoryInfo); |
| 42 | |
| 43 | if (!repoInfo) { |
| 44 | return false; |
| 45 | } |
| 46 | |
| 47 | return checkShouldHideMaster(config, odType, cwd, repoInfo); |
| 48 | }); |
| 49 | |
| 50 | /** |
| 51 | * Computed atom that indicates if the hidden master feature is available. |
| 52 | * This is true when the sitevar config has been fetched and the current OD type |
| 53 | * is enabled in the config. |
| 54 | */ |
| 55 | export const hiddenMasterFeatureAvailableAtom = atom(get => { |
| 56 | const config = get(hiddenMasterBranchConfigAtom); |
| 57 | const odType = get(odTypeAtom); |
| 58 | // Feature is available if config exists and current OD type is in the config |
| 59 | return config != null && odType != null && odType in config; |
| 60 | }); |
| 61 | |
| 62 | /** |
| 63 | * Check if master branch should be hidden based on sitevar config and repo path. |
| 64 | */ |
| 65 | function checkShouldHideMaster( |
| 66 | hiddenMasterBranchConfig: Record<string, Array<string>> | null, |
| 67 | odType: string | null, |
| 68 | cwd: string, |
| 69 | repoInfo: RepoInfo, |
| 70 | ): boolean { |
| 71 | if (!hiddenMasterBranchConfig || !odType) { |
| 72 | return false; |
| 73 | } |
| 74 | |
| 75 | if (repoInfo.type !== 'success') { |
| 76 | return false; |
| 77 | } |
| 78 | |
| 79 | const repoPaths = hiddenMasterBranchConfig[odType]; |
| 80 | if (!repoPaths) { |
| 81 | return false; |
| 82 | } |
| 83 | |
| 84 | const repoRoot = repoInfo.repoRoot; |
| 85 | |
| 86 | // Check if current working directory matches any of the configured paths |
| 87 | const shouldHide = repoPaths.some(configPath => { |
| 88 | // Strip 'fbsource/' prefix if present to get the relative path |
| 89 | const relativePath = configPath.startsWith('fbsource/') |
| 90 | ? configPath.substring('fbsource/'.length) |
| 91 | : configPath; |
| 92 | |
| 93 | // Construct the full expected path |
| 94 | const fullPath = `${repoRoot}/${relativePath}`; |
| 95 | |
| 96 | // Check if current working directory matches the configured path |
| 97 | return cwd === fullPath || cwd.startsWith(`${fullPath}/`); |
| 98 | }); |
| 99 | |
| 100 | return shouldHide; |
| 101 | } |
| 102 | |
| 103 | // Listen for config from server and store it |
| 104 | registerDisposable( |
| 105 | serverAPI, |
| 106 | serverAPI.onMessageOfType('fetchedHiddenMasterBranchConfig', data => { |
| 107 | // Store the config, OD type, and cwd in atoms for quick access |
| 108 | writeAtom(hiddenMasterBranchConfigAtom, data.config || {}); |
| 109 | writeAtom(odTypeAtom, data.odType || ''); |
| 110 | writeAtom(cwdAtom, data.cwd); |
| 111 | }), |
| 112 | import.meta.hot, |
| 113 | ); |
| 114 | |