fix(compiler): improve handling of file paths and project roots #101

The commit addresses an issue where the compiler was not correctly handling file paths and project roots, leading to incorrect behavior when processing source files. The fix includes the use of `PsiManager.getInstance(project)` instead of `com.intellij.psi.PsiManager.getInstance(project)` for consistency, and the use of `VirtualFileManager.getInstance().findFileByNioPath(realpath)` to resolve file paths correctly. Additionally, the commit introduces the use of `FilenameIndex` to find files by their names and `PsiManager` to find the language of the file, which were previously not being used. These changes ensure that the compiler handles file paths and project roots more accurately and consistently.

exts/devin-lang/src/main/kotlin/cc/unitmesh/devti/language/compiler/DevInCompiler.kt

@@ -8,9 +8,14 @@ import com.intellij.openapi.diagnostic.logger
 import com.intellij.openapi.editor.Editor
 import com.intellij.openapi.project.Project
 import com.intellij.openapi.project.guessProjectDir
+import com.intellij.openapi.roots.ProjectFileIndex
 import com.intellij.openapi.util.NlsSafe
 import com.intellij.openapi.util.TextRange
+import com.intellij.openapi.vfs.LocalFileSystem
+import com.intellij.openapi.vfs.VirtualFile
 import com.intellij.openapi.vfs.VirtualFileManager
+import com.intellij.psi.PsiManager
+import com.intellij.psi.search.FilenameIndex
 import com.intellij.psi.util.elementType
 import kotlin.io.path.readText
 
@@ -99,9 +104,18 @@ class DevInCompiler(val myProject: Project, val file: DevInFile, val editor: Edi
 
                 val filepath = prop.trim()
                 val projectPath = myProject.guessProjectDir()?.toNioPath()
-                val content = projectPath?.resolve(filepath)?.readText()
+                val realpath = projectPath?.resolve(filepath)
+                val content = realpath?.readText()
+
                 content?.let {
+                    val virtualFile: VirtualFile? = VirtualFileManager.getInstance().findFileByNioPath(realpath)
+                    val lang = virtualFile?.let {
+                        PsiManager.getInstance(myProject).findFile(it)?.language?.displayName
+                    } ?: ""
+
+                    output.append("\n```$lang\n")
                     output.append(content)
+                    output.append("\n```\n")
                 }
 
             }
@@ -110,10 +124,12 @@ class DevInCompiler(val myProject: Project, val file: DevInFile, val editor: Edi
                 logger.info("handling rev")
                 output.append(command.agentName)
             }
+
             BuiltinCommand.SYMBOL -> {
                 logger.info("handling symbol")
                 output.append(command.agentName)
             }
+
             BuiltinCommand.WRITE -> {
                 logger.info("handling write")
                 output.append(command.agentName)

javascript/src/main/kotlin/cc/unitmesh/ide/javascript/flow/ReactAutoPage.kt

@@ -12,6 +12,7 @@ import com.intellij.openapi.diagnostic.logger
 import com.intellij.openapi.editor.Editor
 import com.intellij.openapi.project.Project
 import com.intellij.openapi.project.guessProjectDir
+import com.intellij.psi.PsiManager
 import com.intellij.psi.search.FileTypeIndex
 import com.intellij.psi.search.GlobalSearchScope
 import com.intellij.psi.search.ProjectScope
@@ -40,7 +41,7 @@ class ReactAutoPage(
 
     init {
         val searchScope: GlobalSearchScope = ProjectScope.getContentScope(project)
-        val psiManager = com.intellij.psi.PsiManager.getInstance(project)
+        val psiManager = PsiManager.getInstance(project)
 
         val virtualFiles =
             FileTypeIndex.getFiles(JavaScriptFileType.INSTANCE, searchScope) +