From 9705f5795b40171b875f770abdbe0ee059f489b4 Mon Sep 17 00:00:00 2001
From: lambtho12 <github@thl.ovh>
Date: Thu, 27 Jan 2022 10:54:30 +0100
Subject: [PATCH] Add UUID prefix to new notes

---
 README.md          |  5 +++++
 doc/telekasten.txt | 18 ++++++++++++++++++
 lua/telekasten.lua | 35 +++++++++++++++++++++++++++++++++++
 3 files changed, 58 insertions(+)

diff --git a/README.md b/README.md
index c628c1e..3a13ec9 100644
--- a/README.md
+++ b/README.md
@@ -238,6 +238,11 @@ require('telekasten').setup({
     -- markdown file extension
     extension    = ".md",
 
+    -- prefix file with uuid
+    prefix_title_by_uuid = false,
+    -- file uuid type ("rand" or input for os.date()")
+    uuid_type = "%Y%m%d%H%M",
+
     -- following a link to a non-existing note will create it
     follow_creates_nonexisting = true,
     dailies_create_nonexisting = true,
diff --git a/doc/telekasten.txt b/doc/telekasten.txt
index 3f34ff4..93bb6f4 100644
--- a/doc/telekasten.txt
+++ b/doc/telekasten.txt
@@ -67,6 +67,11 @@ telekasten.setup({opts})
       -- markdown file extension
       extension    = ".md",
 
+      -- prefix file with uuid
+      prefix_title_by_uuid = true,
+      -- file uuid type ("rand" or input for os.date such as "%Y%m%d%H%M")
+      uuid_type = "%Y%m%d%H%M",
+
       templates = '/path/to/directory',     -- path to templates
       extension = '.file extension',        -- file extension of note files
 
@@ -182,6 +187,19 @@ telekasten.setup({opts})
 
         Default: '.md'
 
+                                *telekasten.settings.prefix_title_by_uuid*
+    prefix_title_by_uuid: ~
+        Adds an Universal Unique Identifier before the file name.
+
+        Default: 'false'
+
+                                           *telekasten.settings.uuid_type*
+    uuid_type: ~
+        Type of UUID. Could be 'rand' for a random 6 character string, or a
+        time format to input in os.date() such as %Y%m%d%H%M.
+
+        Default: '%Y%m%d%H%M'
+
                                         *telekasten.settings.image_subdir*
     image_subdir: ~
         Path to the directory where pasted images should go to. Accepts
diff --git a/lua/telekasten.lua b/lua/telekasten.lua
index fbfc50b..315f228 100644
--- a/lua/telekasten.lua
+++ b/lua/telekasten.lua
@@ -52,6 +52,11 @@ M.Cfg = {
     -- markdown file extension
     extension = ".md",
 
+    -- prefix file with uuid
+    prefix_title_by_uuid = false,
+    -- file uuid type ("rand" or input for os.date()")
+    uuid_type = "%Y%m%d%H%M",
+
     -- following a link to a non-existing note will create it
     follow_creates_nonexisting = true,
     dailies_create_nonexisting = true,
@@ -143,6 +148,32 @@ local function file_exists(fname)
     end
 end
 
+local function random_variable(length)
+    math.randomseed(os.clock() ^ 5)
+    local res = ""
+    for _ = 1, length do
+        res = res .. string.char(math.random(97, 122))
+    end
+    return res
+end
+
+local function append_uuid(opts, title)
+    opts.prefix_title_by_uuid = opts.prefix_title_by_uuid
+        or M.Cfg.prefix_title_by_uuid
+    opts.uuid_type = opts.uuid_type or M.Cfg.uuid_type
+
+    if opts.prefix_title_by_uuid then
+        local uuid = ""
+        if opts.uuid_type ~= "rand" then
+            uuid = os.date(opts.uuid_type)
+        else
+            uuid = random_variable(6)
+        end
+        title = uuid .. "-" .. title
+    end
+    return title
+end
+
 local function print_error(s)
     vim.cmd("echohl ErrorMsg")
     vim.cmd("echomsg " .. '"' .. s .. '"')
@@ -1793,6 +1824,8 @@ local function on_create_with_template(opts, title)
         return
     end
 
+    title = append_uuid(opts, title)
+
     opts = opts or {}
     opts.insert_after_inserting = opts.insert_after_inserting
         or M.Cfg.insert_after_inserting
@@ -1874,6 +1907,8 @@ local function on_create(opts, title)
         return
     end
 
+    title = append_uuid(opts, title)
+
     local pinfo = Pinfo:new({ title = title, opts })
     local fname = pinfo.filepath