Add ability for plugins to add custom routes

1 files changed, 235 insertions, 0 deletions

diff --git a/server/lib/plugins/register-helpers-store.ts b/server/lib/plugins/register-helpers-store.ts
new file mode 100644
index 000000000..c76c0161a
--- /dev/null
+++ b/server/lib/plugins/register-helpers-store.ts
@@ -0,0 +1,235 @@
+import { PluginSettingsManager } from '@shared/models/plugins/plugin-settings-manager.model'
+import { PluginModel } from '@server/models/server/plugin'
+import { PluginStorageManager } from '@shared/models/plugins/plugin-storage-manager.model'
+import { PluginVideoLanguageManager } from '@shared/models/plugins/plugin-video-language-manager.model'
+import { VIDEO_CATEGORIES, VIDEO_LANGUAGES, VIDEO_LICENCES } from '@server/initializers/constants'
+import { PluginVideoLicenceManager } from '@shared/models/plugins/plugin-video-licence-manager.model'
+import { PluginVideoCategoryManager } from '@shared/models/plugins/plugin-video-category-manager.model'
+import { RegisterServerOptions } from '@server/typings/plugins'
+import { buildPluginHelpers } from './plugin-helpers'
+import { logger } from '@server/helpers/logger'
+import { RegisterServerHookOptions } from '@shared/models/plugins/register-server-hook.model'
+import { serverHookObject } from '@shared/models/plugins/server-hook.model'
+import { RegisterServerSettingOptions } from '@shared/models/plugins/register-server-setting.model'
+import * as express from 'express'
+
+type AlterableVideoConstant = 'language' | 'licence' | 'category'
+type VideoConstant = { [key in number | string]: string }
+
+type UpdatedVideoConstant = {
+  [name in AlterableVideoConstant]: {
+    added: { key: number | string, label: string }[]
+    deleted: { key: number | string, label: string }[]
+  }
+}
+
+export class RegisterHelpersStore {
+  private readonly updatedVideoConstants: UpdatedVideoConstant = {
+    language: { added: [], deleted: [] },
+    licence: { added: [], deleted: [] },
+    category: { added: [], deleted: [] }
+  }
+
+  private readonly settings: RegisterServerSettingOptions[] = []
+
+  private readonly router: express.Router
+
+  constructor (
+    private readonly npmName: string,
+    private readonly plugin: PluginModel,
+    private readonly onHookAdded: (options: RegisterServerHookOptions) => void
+  ) {
+    this.router = express.Router()
+  }
+
+  buildRegisterHelpers (): RegisterServerOptions {
+    const registerHook = this.buildRegisterHook()
+    const registerSetting = this.buildRegisterSetting()
+
+    const getRouter = this.buildGetRouter()
+
+    const settingsManager = this.buildSettingsManager()
+    const storageManager = this.buildStorageManager()
+
+    const videoLanguageManager = this.buildVideoLanguageManager()
+
+    const videoLicenceManager = this.buildVideoLicenceManager()
+    const videoCategoryManager = this.buildVideoCategoryManager()
+
+    const peertubeHelpers = buildPluginHelpers(this.npmName)
+
+    return {
+      registerHook,
+      registerSetting,
+
+      getRouter,
+
+      settingsManager,
+      storageManager,
+
+      videoLanguageManager,
+      videoCategoryManager,
+      videoLicenceManager,
+
+      peertubeHelpers
+    }
+  }
+
+  reinitVideoConstants (npmName: string) {
+    const hash = {
+      language: VIDEO_LANGUAGES,
+      licence: VIDEO_LICENCES,
+      category: VIDEO_CATEGORIES
+    }
+    const types: AlterableVideoConstant[] = [ 'language', 'licence', 'category' ]
+
+    for (const type of types) {
+      const updatedConstants = this.updatedVideoConstants[type][npmName]
+      if (!updatedConstants) continue
+
+      for (const added of updatedConstants.added) {
+        delete hash[type][added.key]
+      }
+
+      for (const deleted of updatedConstants.deleted) {
+        hash[type][deleted.key] = deleted.label
+      }
+
+      delete this.updatedVideoConstants[type][npmName]
+    }
+  }
+
+  getSettings () {
+    return this.settings
+  }
+
+  getRouter () {
+    return this.router
+  }
+
+  private buildGetRouter () {
+    return () => this.router
+  }
+
+  private buildRegisterSetting () {
+    return (options: RegisterServerSettingOptions) => {
+      this.settings.push(options)
+    }
+  }
+
+  private buildRegisterHook () {
+    return (options: RegisterServerHookOptions) => {
+      if (serverHookObject[options.target] !== true) {
+        logger.warn('Unknown hook %s of plugin %s. Skipping.', options.target, this.npmName)
+        return
+      }
+
+      return this.onHookAdded(options)
+    }
+  }
+
+  private buildSettingsManager (): PluginSettingsManager {
+    return {
+      getSetting: (name: string) => PluginModel.getSetting(this.plugin.name, this.plugin.type, name),
+
+      setSetting: (name: string, value: string) => PluginModel.setSetting(this.plugin.name, this.plugin.type, name, value)
+    }
+  }
+
+  private buildStorageManager (): PluginStorageManager {
+    return {
+      getData: (key: string) => PluginModel.getData(this.plugin.name, this.plugin.type, key),
+
+      storeData: (key: string, data: any) => PluginModel.storeData(this.plugin.name, this.plugin.type, key, data)
+    }
+  }
+
+  private buildVideoLanguageManager (): PluginVideoLanguageManager {
+    return {
+      addLanguage: (key: string, label: string) => {
+        return this.addConstant({ npmName: this.npmName, type: 'language', obj: VIDEO_LANGUAGES, key, label })
+      },
+
+      deleteLanguage: (key: string) => {
+        return this.deleteConstant({ npmName: this.npmName, type: 'language', obj: VIDEO_LANGUAGES, key })
+      }
+    }
+  }
+
+  private buildVideoCategoryManager (): PluginVideoCategoryManager {
+    return {
+      addCategory: (key: number, label: string) => {
+        return this.addConstant({ npmName: this.npmName, type: 'category', obj: VIDEO_CATEGORIES, key, label })
+      },
+
+      deleteCategory: (key: number) => {
+        return this.deleteConstant({ npmName: this.npmName, type: 'category', obj: VIDEO_CATEGORIES, key })
+      }
+    }
+  }
+
+  private buildVideoLicenceManager (): PluginVideoLicenceManager {
+    return {
+      addLicence: (key: number, label: string) => {
+        return this.addConstant({ npmName: this.npmName, type: 'licence', obj: VIDEO_LICENCES, key, label })
+      },
+
+      deleteLicence: (key: number) => {
+        return this.deleteConstant({ npmName: this.npmName, type: 'licence', obj: VIDEO_LICENCES, key })
+      }
+    }
+  }
+
+  private addConstant<T extends string | number> (parameters: {
+    npmName: string
+    type: AlterableVideoConstant
+    obj: VideoConstant
+    key: T
+    label: string
+  }) {
+    const { npmName, type, obj, key, label } = parameters
+
+    if (obj[key]) {
+      logger.warn('Cannot add %s %s by plugin %s: key already exists.', type, npmName, key)
+      return false
+    }
+
+    if (!this.updatedVideoConstants[type][npmName]) {
+      this.updatedVideoConstants[type][npmName] = {
+        added: [],
+        deleted: []
+      }
+    }
+
+    this.updatedVideoConstants[type][npmName].added.push({ key, label })
+    obj[key] = label
+
+    return true
+  }
+
+  private deleteConstant<T extends string | number> (parameters: {
+    npmName: string
+    type: AlterableVideoConstant
+    obj: VideoConstant
+    key: T
+  }) {
+    const { npmName, type, obj, key } = parameters
+
+    if (!obj[key]) {
+      logger.warn('Cannot delete %s %s by plugin %s: key does not exist.', type, npmName, key)
+      return false
+    }
+
+    if (!this.updatedVideoConstants[type][npmName]) {
+      this.updatedVideoConstants[type][npmName] = {
+        added: [],
+        deleted: []
+      }
+    }
+
+    this.updatedVideoConstants[type][npmName].deleted.push({ key, label: obj[key] })
+    delete obj[key]
+
+    return true
+  }
+}