chore: import upstream snapshot with attribution

apps/sim/tools/reddit/send_message.ts

@@ -0,0 +1,122 @@
+import type { RedditSendMessageParams, RedditWriteResponse } from '@/tools/reddit/types'
+import type { ToolConfig } from '@/tools/types'
+
+export const sendMessageTool: ToolConfig<RedditSendMessageParams, RedditWriteResponse> = {
+  id: 'reddit_send_message',
+  name: 'Send Reddit Message',
+  description: 'Send a private message to a Reddit user',
+  version: '1.0.0',
+
+  oauth: {
+    required: true,
+    provider: 'reddit',
+  },
+
+  params: {
+    accessToken: {
+      type: 'string',
+      required: true,
+      visibility: 'hidden',
+      description: 'Access token for Reddit API',
+    },
+    to: {
+      type: 'string',
+      required: true,
+      visibility: 'user-or-llm',
+      description: 'Recipient username (e.g., "example_user") or subreddit (e.g., "/r/subreddit")',
+    },
+    subject: {
+      type: 'string',
+      required: true,
+      visibility: 'user-or-llm',
+      description: 'Message subject (max 100 characters)',
+    },
+    text: {
+      type: 'string',
+      required: true,
+      visibility: 'user-or-llm',
+      description: 'Message body in markdown format',
+    },
+    from_sr: {
+      type: 'string',
+      required: false,
+      visibility: 'user-or-llm',
+      description: 'Subreddit name to send the message from (requires moderator mail permission)',
+    },
+  },
+
+  request: {
+    url: () => 'https://oauth.reddit.com/api/compose',
+    method: 'POST',
+    headers: (params: RedditSendMessageParams) => {
+      if (!params.accessToken) {
+        throw new Error('Access token is required for Reddit API')
+      }
+
+      return {
+        Authorization: `Bearer ${params.accessToken}`,
+        'User-Agent': 'sim-studio/1.0 (https://github.com/simstudioai/sim)',
+        'Content-Type': 'application/x-www-form-urlencoded',
+      }
+    },
+    body: (params: RedditSendMessageParams) => {
+      const formData = new URLSearchParams({
+        to: params.to.trim(),
+        subject: params.subject,
+        text: params.text,
+        api_type: 'json',
+      })
+
+      if (params.from_sr) {
+        formData.append('from_sr', params.from_sr.trim())
+      }
+
+      return formData.toString()
+    },
+  },
+
+  transformResponse: async (response: Response) => {
+    const data = await response.json()
+
+    if (!response.ok) {
+      const errorMsg = data?.message || `HTTP error ${response.status}`
+      return {
+        success: false,
+        output: {
+          success: false,
+          message: `Failed to send message: ${errorMsg}`,
+        },
+      }
+    }
+
+    if (data.json?.errors && data.json.errors.length > 0) {
+      const errors = data.json.errors.map((err: any) => err.join(': ')).join(', ')
+      return {
+        success: false,
+        output: {
+          success: false,
+          message: `Failed to send message: ${errors}`,
+        },
+      }
+    }
+
+    return {
+      success: true,
+      output: {
+        success: true,
+        message: 'Message sent successfully',
+      },
+    }
+  },
+
+  outputs: {
+    success: {
+      type: 'boolean',
+      description: 'Whether the message was sent successfully',
+    },
+    message: {
+      type: 'string',
+      description: 'Success or error message',
+    },
+  },
+}