refactor blog and showcase implementation

sites/org/components/mdx/posts/utils.mjs

@@ -0,0 +1,37 @@
+import { localePath } from 'shared/utils.mjs'
+const preGenerate = 6
+export const numPerPage = 12
+
+export const getPostSlugPaths = (order) => {
+  const paths = []
+
+  for (const lang in order) {
+    for (let i = 0; i < preGenerate; i++) {
+      const slug = order[lang][i]
+      paths.push(localePath(lang, `${order[lang][i]}`))
+    }
+  }
+
+  return paths
+}
+
+export const getPostIndexPaths = (order, type) => {
+  const paths = []
+  for (const language in order) {
+    paths.push(localePath(language, `${type}/page/1`))
+    paths.push(localePath(language, `${type}/page/2`))
+  }
+
+  return paths
+}
+
+export const getPostIndexProps = (locale, params, order, postInfo) => {
+  const pageNum = parseInt(params.page)
+  const numLocPages = Math.ceil(order[locale].length / numPerPage)
+  if (pageNum > numLocPages) return false
+
+  const postSlugs = order[locale].slice(numPerPage * (pageNum - 1), numPerPage * pageNum)
+  const posts = postSlugs.map((s) => ({ ...postInfo[locale][s], s }))
+
+  return { posts, current: pageNum, total: numLocPages }
+}