refactor(nvim-tree): abstract away file tree building

src/utils/filesystem.ts

@@ -1,11 +1,18 @@
 import { type Cell } from "./terminal/cell";
 import { theme } from "./terminal/theme";
+import { type Manifest } from "./types";
 
-export const FILE_STYLES = {
-  directory: {
-    char: "\ue6ad", //  \ue6ad ||| \ueaf6
-    foreground: theme.blue,
-  },
+export const getExtension = (path: string) => {
+  const parts = path.split(".");
+  return parts[Math.max(0, parts.length - 1)] ?? "";
+};
+
+export const DEFAULT_FILE_STYLE: Cell = {
+  char: "F",
+  foreground: theme.white,
+};
+
+export const FILE_STYLES: Record<string, Cell> = {
   md: {
     char: "\ue73e",
     foreground: theme.blue,
@@ -14,15 +21,13 @@ export const FILE_STYLES = {
     char: "\uf43d",
     foreground: theme.yellow,
   },
-} as const satisfies Record<string, Cell>;
-
-export type FileType = keyof typeof FILE_STYLES;
+};
 
 export type File = {
   name: string;
 } & (
   | {
-      type: Exclude<FileType, "directory">;
+      type: "file";
     }
   | {
       type: "directory";
@@ -30,3 +35,42 @@ export type File = {
       folded: boolean;
     }
 );
+
+const sortFiles = (files: Array<File>) =>
+  files
+    .sort((a, b) => a.name.localeCompare(b.name))
+    .sort((a, b) =>
+      a.type === "directory" && b.type !== "directory"
+        ? -1
+        : a.type !== "directory" && b.type === "directory"
+          ? 1
+          : 0,
+    );
+
+export const buildFileTree = (manifest: Manifest): Array<File> => {
+  const files: Array<File> = [];
+  manifest.projects.forEach(project => {
+    if (project.name === "pihkaal") {
+      project.files.forEach(file => {
+        files.push({
+          name: file,
+          type: "file",
+        });
+      });
+    } else {
+      files.push({
+        name: project.name,
+        type: "directory",
+        folded: true,
+        children: sortFiles(
+          project.files.map(file => ({
+            name: file,
+            type: "file",
+          })),
+        ),
+      });
+    }
+  });
+
+  return sortFiles(files);
+};