From 8fa04285094cd8c7683f8851dc73481a6c8adb77 Mon Sep 17 00:00:00 2001
From: Govind Kumar <gk4051668@gmail.com>
Date: Wed, 14 Jun 2023 20:29:38 +0530
Subject: [PATCH] Feature: Subtitles Loader Integration

---
 .../documentloaders/Subtitles/Subtitles.ts    | 95 +++++++++++++++++++
 .../Subtitles/subtitlesFile.svg               |  1 +
 packages/components/package.json              |  5 +-
 3 files changed, 99 insertions(+), 2 deletions(-)
 create mode 100644 packages/components/nodes/documentloaders/Subtitles/Subtitles.ts
 create mode 100644 packages/components/nodes/documentloaders/Subtitles/subtitlesFile.svg

diff --git a/packages/components/nodes/documentloaders/Subtitles/Subtitles.ts b/packages/components/nodes/documentloaders/Subtitles/Subtitles.ts
new file mode 100644
index 00000000000..0f60e151ed4
--- /dev/null
+++ b/packages/components/nodes/documentloaders/Subtitles/Subtitles.ts
@@ -0,0 +1,95 @@
+import { INode, INodeData, INodeParams } from '../../../src/Interface'
+import { TextSplitter } from 'langchain/text_splitter'
+import { SRTLoader } from 'langchain/document_loaders/fs/srt'
+
+class Subtitles_DocumentLoaders implements INode {
+    label: string
+    name: string
+    description: string
+    type: string
+    icon: string
+    category: string
+    baseClasses: string[]
+    inputs: INodeParams[]
+
+    constructor() {
+        this.label = 'Subtitles File'
+        this.name = 'subtitlesFile'
+        this.type = 'Document'
+        this.icon = 'subtitlesFile.svg'
+        this.category = 'Document Loaders'
+        this.description = `Load data from subtitles files`
+        this.baseClasses = [this.type]
+        this.inputs = [
+            {
+                label: 'Subtitles File',
+                name: 'subtitlesFile',
+                type: 'file',
+                fileType: '.srt'
+            },
+            {
+                label: 'Text Splitter',
+                name: 'textSplitter',
+                type: 'TextSplitter',
+                optional: true
+            },
+            {
+                label: 'Metadata',
+                name: 'metadata',
+                type: 'json',
+                optional: true,
+                additionalParams: true
+            }
+        ]
+    }
+
+    async init(nodeData: INodeData): Promise<any> {
+        const textSplitter = nodeData.inputs?.textSplitter as TextSplitter
+        const subtitlesFileBase64 = nodeData.inputs?.subtitlesFile as string
+        const metadata = nodeData.inputs?.metadata
+
+        let alldocs = []
+        let files: string[] = []
+
+        if (subtitlesFileBase64.startsWith('[') && subtitlesFileBase64.endsWith(']')) {
+            files = JSON.parse(subtitlesFileBase64)
+        } else {
+            files = [subtitlesFileBase64]
+        }
+
+        for (const file of files) {
+            const splitDataURI = file.split(',')
+            splitDataURI.pop()
+            const bf = Buffer.from(splitDataURI.pop() || '', 'base64')
+            const blob = new Blob([bf])
+            const loader = new SRTLoader(blob)
+
+            if (textSplitter) {
+                const docs = await loader.loadAndSplit(textSplitter)
+                alldocs.push(...docs)
+            } else {
+                const docs = await loader.load()
+                alldocs.push(...docs)
+            }
+        }
+
+        if (metadata) {
+            const parsedMetadata = typeof metadata === 'object' ? metadata : JSON.parse(metadata)
+            let finaldocs = []
+            for (const doc of alldocs) {
+                const newdoc = {
+                    ...doc,
+                    metadata: {
+                        ...doc.metadata,
+                        ...parsedMetadata
+                    }
+                }
+                finaldocs.push(newdoc)
+            }
+            return finaldocs
+        }
+        return alldocs
+    }
+}
+
+module.exports = { nodeClass: Subtitles_DocumentLoaders }
diff --git a/packages/components/nodes/documentloaders/Subtitles/subtitlesFile.svg b/packages/components/nodes/documentloaders/Subtitles/subtitlesFile.svg
new file mode 100644
index 00000000000..a6ee925bc1f
--- /dev/null
+++ b/packages/components/nodes/documentloaders/Subtitles/subtitlesFile.svg
@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" data-name="Layer 1" viewBox="0 0 24 24" id="subtitles"><path d="M20,4.25H4A2.748,2.748,0,0,0,1.25,7V17A2.748,2.748,0,0,0,4,19.75H20A2.748,2.748,0,0,0,22.75,17V7A2.748,2.748,0,0,0,20,4.25Zm-14,5H8a.75.75,0,0,1,0,1.5H6a.75.75,0,0,1,0-1.5Zm7,5.5H6a.75.75,0,0,1,0-1.5h7a.75.75,0,0,1,0,1.5Zm5,0H16a.75.75,0,0,1,0-1.5h2a.75.75,0,0,1,0,1.5Zm0-4H11a.75.75,0,0,1,0-1.5h7a.75.75,0,0,1,0,1.5Z"></path></svg>
\ No newline at end of file
diff --git a/packages/components/package.json b/packages/components/package.json
index 207d3e8975b..30a6b407d2a 100644
--- a/packages/components/package.json
+++ b/packages/components/package.json
@@ -32,15 +32,16 @@
         "faiss-node": "^0.2.1",
         "form-data": "^4.0.0",
         "graphql": "^16.6.0",
+        "html-to-text": "^9.0.5",
         "langchain": "^0.0.94",
         "linkifyjs": "^4.1.1",
         "mammoth": "^1.5.1",
         "moment": "^2.29.3",
         "node-fetch": "^2.6.11",
         "pdf-parse": "^1.1.1",
+        "srt-parser-2": "^1.2.3",
         "weaviate-ts-client": "^1.1.0",
-        "ws": "^8.9.0",
-        "html-to-text": "^9.0.5"
+        "ws": "^8.9.0"
     },
     "devDependencies": {
         "@types/gulp": "4.0.9",