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Emitter = require('component-emitter')\n\n/**\n * Track completion of multiple assemblies.\n *\n * Emits 'assembly-complete' when an assembly completes.\n * Emits 'assembly-error' when an assembly fails.\n * Exposes a `.promise` property that resolves when all assemblies have\n * completed (or failed).\n */\nclass TransloaditAssemblyWatcher extends Emitter {\n constructor (uppy, assemblyIDs) {\n super()\n\n this._uppy = uppy\n this._assemblyIDs = assemblyIDs\n this._remaining = assemblyIDs.length\n\n this.promise = new Promise((resolve, reject) => {\n this._resolve = resolve\n this._reject = reject\n })\n\n this._onAssemblyComplete = this._onAssemblyComplete.bind(this)\n this._onAssemblyCancel = this._onAssemblyCancel.bind(this)\n this._onAssemblyError = this._onAssemblyError.bind(this)\n this._onImportError = this._onImportError.bind(this)\n\n this._addListeners()\n }\n\n /**\n * Are we watching this assembly ID?\n */\n _watching (id) {\n return this._assemblyIDs.indexOf(id) !== -1\n }\n\n _onAssemblyComplete (assembly) {\n if (!this._watching(assembly.assembly_id)) {\n return\n }\n\n this._uppy.log(`[Transloadit] AssemblyWatcher: Got Assembly finish ${assembly.assembly_id}`)\n\n this.emit('assembly-complete', assembly.assembly_id)\n\n this._checkAllComplete()\n }\n\n _onAssemblyCancel (assembly) {\n if (!this._watching(assembly.assembly_id)) {\n return\n }\n\n this._checkAllComplete()\n }\n\n _onAssemblyError (assembly, error) {\n if (!this._watching(assembly.assembly_id)) {\n return\n }\n\n this._uppy.log(`[Transloadit] AssemblyWatcher: Got Assembly error ${assembly.assembly_id}`)\n this._uppy.log(error)\n\n this.emit('assembly-error', assembly.assembly_id, error)\n\n this._checkAllComplete()\n }\n\n _onImportError (assembly, fileID, error) {\n if (!this._watching(assembly.assembly_id)) {\n return\n }\n\n // Not sure if we should be doing something when it's just one file failing.\n // ATM, the only options are 1) ignoring or 2) failing the entire upload.\n // I think failing the upload is better than silently ignoring.\n // In the future we should maybe have a way to resolve uploads with some failures,\n // like returning an object with `{ successful, failed }` uploads.\n this._onAssemblyError(assembly, error)\n }\n\n _checkAllComplete () {\n this._remaining -= 1\n if (this._remaining === 0) {\n // We're done, these listeners can be removed\n this._removeListeners()\n this._resolve()\n }\n }\n\n _removeListeners () {\n this._uppy.off('transloadit:complete', this._onAssemblyComplete)\n this._uppy.off('transloadit:assembly-cancel', this._onAssemblyCancel)\n this._uppy.off('transloadit:assembly-error', this._onAssemblyError)\n this._uppy.off('transloadit:import-error', this._onImportError)\n }\n\n _addListeners () {\n this._uppy.on('transloadit:complete', this._onAssemblyComplete)\n this._uppy.on('transloadit:assembly-cancel', this._onAssemblyCancel)\n this._uppy.on('transloadit:assembly-error', this._onAssemblyError)\n this._uppy.on('transloadit:import-error', this._onImportError)\n }\n}\n\nmodule.exports = TransloaditAssemblyWatcher\n"]} |