add homepage management

apps/api/src/services/platformContentService.ts

@@ -0,0 +1,44 @@
+import { mkdir, readFile, writeFile } from 'fs/promises'
+import path from 'path'
+import { cloneMarketplaceHomepageContent, type MarketplaceHomepageConfig } from '@rentaldrivego/types'
+
+function resolveContentPath() {
+  const cwd = process.cwd()
+  const appScoped = path.resolve(cwd, 'src/data/platform-content.json')
+  const repoScoped = path.resolve(cwd, 'apps/api/src/data/platform-content.json')
+  return cwd.includes('/apps/api') ? appScoped : repoScoped
+}
+
+const platformContentPath = resolveContentPath()
+
+type PlatformContentFile = {
+  marketplaceHomepage?: MarketplaceHomepageConfig
+}
+
+async function readPlatformContentFile(): Promise<PlatformContentFile> {
+  try {
+    const raw = await readFile(platformContentPath, 'utf8')
+    return JSON.parse(raw) as PlatformContentFile
+  } catch {
+    return {}
+  }
+}
+
+async function writePlatformContentFile(content: PlatformContentFile) {
+  await mkdir(path.dirname(platformContentPath), { recursive: true })
+  await writeFile(platformContentPath, JSON.stringify(content, null, 2))
+}
+
+export async function getMarketplaceHomepageContent() {
+  const content = await readPlatformContentFile()
+  return content.marketplaceHomepage ?? cloneMarketplaceHomepageContent()
+}
+
+export async function saveMarketplaceHomepageContent(homepage: MarketplaceHomepageConfig) {
+  const content = await readPlatformContentFile()
+  await writePlatformContentFile({
+    ...content,
+    marketplaceHomepage: homepage,
+  })
+  return homepage
+}