refact: templates

lua/telekasten/templates.lua

@@ -0,0 +1,38 @@
+-- Template handling
+
+local dateutils = require("telekasten.utils.dates")
+
+local M = {}
+
+function M.subst_templated_values(line, title, dates, uuid, calendar_monday)
+    -- Various date formats
+    if dates == nil then
+        dates = dateutils.calculate_dates(nil, calendar_monday)
+    end
+
+    -- {{uuid}}: note UUID if any
+    if uuid == nil then
+        uuid = ""
+    end
+
+    -- {{shorttitle}}: only filename, not full subdir paths
+    local shorttitle = string.match(title, "^.+/(.+)$")
+    if shorttitle == nil then
+        shorttitle = title
+    end
+
+    -- Expend the substitutions table and proceed
+    local substs = vim.tbl_extend("error", dates, {
+        title = title:gsub("^%l", string.upper),
+        shorttitle = shorttitle:gsub("^%l", string.upper),
+        uuid = uuid,
+    })
+
+    for k, v in pairs(substs) do
+        line = line:gsub("{{" .. k .. "}}", v)
+    end
+
+    return line
+end
+
+return M