Merge branch 'main' into sgoedecke/use-openai-sdk

src/main.ts

@@ -5,7 +5,13 @@ import * as path from 'path'
 import {connectToGitHubMCP} from './mcp.js'
 import {simpleInference, mcpInference} from './inference.js'
 import {loadContentFromFileOrInput, buildInferenceRequest} from './helpers.js'
-import {loadPromptFile, parseTemplateVariables, isPromptYamlFile, PromptConfig} from './prompt.js'
+import {
+  loadPromptFile,
+  parseTemplateVariables,
+  isPromptYamlFile,
+  PromptConfig,
+  parseFileTemplateVariables,
+} from './prompt.js'
 
 const RESPONSE_FILE = 'modelResponse.txt'
 
@@ -18,6 +24,7 @@ export async function run(): Promise<void> {
   try {
     const promptFilePath = core.getInput('prompt-file')
     const inputVariables = core.getInput('input')
+    const fileInputVariables = core.getInput('file_input')
 
     let promptConfig: PromptConfig | undefined = undefined
     let systemPrompt: string | undefined = undefined
@@ -27,8 +34,10 @@ export async function run(): Promise<void> {
     if (promptFilePath && isPromptYamlFile(promptFilePath)) {
       core.info('Using prompt YAML file format')
 
-      // Parse template variables
-      const templateVariables = parseTemplateVariables(inputVariables)
+      // Parse template variables from both string inputs and file-based inputs
+      const stringVars = parseTemplateVariables(inputVariables)
+      const fileVars = parseFileTemplateVariables(fileInputVariables)
+      const templateVariables = {...stringVars, ...fileVars}
 
       // Load and process prompt file
       promptConfig = loadPromptFile(promptFilePath, templateVariables)

src/prompt.ts

@@ -37,6 +37,47 @@ export function parseTemplateVariables(input: string): TemplateVariables {
   }
 }
 
+/**
+ * Parse file-based template variables from YAML input string. The YAML should map
+ * variable names to file paths. File contents are read and returned as variables.
+ */
+export function parseFileTemplateVariables(fileInput: string): TemplateVariables {
+  if (!fileInput.trim()) {
+    return {}
+  }
+
+  try {
+    const parsed = yaml.load(fileInput) as Record<string, unknown>
+    if (typeof parsed !== 'object' || parsed === null) {
+      throw new Error('File template variables must be a YAML object')
+    }
+
+    const result: TemplateVariables = {}
+    for (const [key, value] of Object.entries(parsed)) {
+      if (typeof value !== 'string') {
+        throw new Error(`File template variable '${key}' must be a string file path`)
+      }
+      const filePath = value
+      if (!fs.existsSync(filePath)) {
+        throw new Error(`File for template variable '${key}' was not found: ${filePath}`)
+      }
+      try {
+        result[key] = fs.readFileSync(filePath, 'utf-8')
+      } catch (err) {
+        throw new Error(
+          `Failed to read file for template variable '${key}' at path '${filePath}': ${err instanceof Error ? err.message : 'Unknown error'}`,
+        )
+      }
+    }
+
+    return result
+  } catch (error) {
+    throw new Error(
+      `Failed to parse file template variables: ${error instanceof Error ? error.message : 'Unknown error'}`,
+    )
+  }
+}
+
 /**
  * Replace template variables in text using {{variable}} syntax
  */