chore: create fileStruct module

initialize markdownFiles table
check html files
check index.html and index.md

fileStruct.lua

@@ -0,0 +1,45 @@
+local lfs = require("lfs")
+
+return function(currentDir)
+    local markdownFiles = {}
+    local haveIndexmd = false
+    local haveIndexhtml = false
+    local markdownFileCount = 0
+
+    -- initialize markdownFiles table
+    for file in lfs.dir(currentDir) do
+        if not(file:sub(1, 2) == ".." or file:sub(1, 1) == '.') then
+            local filePath = currentDir .. '/' .. file
+            if file == "index.md" then haveIndexmd = true end
+            if file == "index.html" then haveIndexhtml = true end
+            if file:match("%.md$") then
+                markdownFileCount = markdownFileCount + 1
+                markdownFiles[markdownFileCount] = {
+                    options = {},
+                    filePath = filePath,
+                    fileName = file:sub(1, file:len() - 3),
+                    content = "",
+                    hasHtml = false
+                }
+            end
+        end
+    end
+
+    -- check html files
+    for file in lfs.dir(currentDir) do
+        if file:match("%.html$") then
+            for index, value in ipairs(markdownFiles) do
+                if file == value.fileName .. ".html" then
+                    markdownFiles[index].hasHtml = true
+                    print(value.fileName .. " file has a html template file.")
+                end
+            end
+        end
+    end
+
+    if not(haveIndexhtml) or not(haveIndexmd) then
+        return nil, "Can't find index.html or index.md!"
+    end
+
+    return markdownFiles
+end