From a11dfbc5865957b3e3047ffd0e750a28b1dc5ce0 Mon Sep 17 00:00:00 2001
From: lambtho12 <github@thl.ovh>
Date: Tue, 18 Jan 2022 10:25:54 +0100
Subject: [PATCH] add: basic note renaming

---
 README.md          |  6 ++++++
 doc/telekasten.txt |  6 ++++++
 lua/telekasten.lua | 45 +++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 57 insertions(+)

diff --git a/README.md b/README.md
index 3ed95b4..e37e260 100644
--- a/README.md
+++ b/README.md
@@ -304,6 +304,8 @@ require('telekasten').setup({
     --                        except for notes/with/subdirs/in/title.
     new_note_location = "smart",
 
+    -- should all links be updated when a file is renamed
+    rename_update_links = true,
 })
 END
 ```
@@ -338,6 +340,7 @@ END
 | | - `#tag` (default) | |
 | | - `:tag:` | |
 | | - `yaml-bare` | |
+| `rename_update_links` | update links when a file is renamed | true |
 | | see [2.1 Tag notation](#24-tag-notation)| |
 | `command_palette_theme` | theme (layout) of the command palette| ivy |
 | | - `ivy` (default): bottom panel overlay  |  |
@@ -463,6 +466,7 @@ the list for a more detailed description:
 - `insert_img_link` : Browse images / media files and insert a link to the selected one
 - `preview_img` : preview image under the cursor
 - `browse_media` : Browse images / media files
+- `rename_note` : Rename current note and possibly update the links pointing to it
 
 The Telekasten command supports sub-command completion, in my case by pressing <kbd>TAB</kbd>.
 
@@ -558,6 +562,7 @@ The plugin defines the following functions:
 - `setup(opts)`: used for configuring paths, file extension, etc.
 - `panel()` : brings up the command palette
 - `show_tags()` : brings up the tag list. From there you can select a tag to search for tagged notes - or yank or insert the tag
+- `rename_note()` : rename the current note and update the links pointing to it
 
 To use one of the functions above, just run them with the `:lua ...` command.
 
@@ -809,6 +814,7 @@ nnoremap <leader>zp :lua require('telekasten').preview_img()<CR>
 nnoremap <leader>zm :lua require('telekasten').browse_media()<CR>
 nnoremap <leader>za :lua require('telekasten').show_tags()<CR>
 nnoremap <leader># :lua require('telekasten').show_tags()<CR>
+nnoremap <leader>zr :lua require('telekasten').rename_note()<CR>
 
 " on hesitation, bring up the panel
 nnoremap <leader>z :lua require('telekasten').panel()<CR>
diff --git a/doc/telekasten.txt b/doc/telekasten.txt
index 65596d2..643cedd 100644
--- a/doc/telekasten.txt
+++ b/doc/telekasten.txt
@@ -312,6 +312,12 @@ telekasten.setup({opts})
 
         Default: `smart`
 
+                                   *telekasten.settings.rename_update_links*
+    rename_update_links:~
+        If `true`, telekasten will automatically update the links after a file
+        has been renamed.
+
+        Default: `true`
                                                *telekasten.calendar_opts*
     -----------------------------------
     Valid keys for {opts.calendar_opts}
diff --git a/lua/telekasten.lua b/lua/telekasten.lua
index ae2563d..bd1da49 100644
--- a/lua/telekasten.lua
+++ b/lua/telekasten.lua
@@ -123,6 +123,9 @@ M.Cfg = {
     --                        present or else in home
     --                        except for notes/with/subdirs/in/title.
     new_note_location = "smart",
+
+    -- should all links be updated when a file is renamed
+    rename_update_links = true,
 }
 
 local function file_exists(fname)
@@ -198,6 +201,20 @@ local function escape(s)
     return string.gsub(s, "[%%%]%^%-$().[*+?]", "%%%1")
 end
 
+local function recursive_substitution(dir, old, new)
+    os.execute(
+        "find "
+            .. dir
+            .. " -type f -name '*"
+            .. M.Cfg.extension
+            .. "' -exec sed -i 's|"
+            .. old
+            .. "|"
+            .. new
+            .. "|g' {} +"
+    )
+end
+
 -- ----------------------------------------------------------------------------
 -- image stuff
 local function imgFromClipboard()
@@ -1396,6 +1413,32 @@ local function YankLink()
     print("yanked " .. title)
 end
 
+--
+-- RenameNote:
+-- -----------
+--
+-- Prompt for new note title, rename the note and update all links.
+--
+local function RenameNote()
+    local oldname = Pinfo:new({ filepath = vim.fn.expand("%:p"), M.Cfg }).title
+    local newname = vim.fn.input("New name: ")
+    newname = newname:gsub("[" .. M.Cfg.extension .. "]+$", "")
+
+    if newname ~= "" and newname ~= oldname then
+        vim.cmd("saveas " .. newname .. M.Cfg.extension)
+        vim.cmd("bdelete " .. oldname .. M.Cfg.extension)
+        vim.cmd("!rm " .. oldname .. M.Cfg.extension)
+        vim.cmd("redraw!")
+    end
+
+    if M.Cfg.rename_update_links == true then
+        -- Sed magic to rename all links (in a separate function)
+        local oldlink = "\\[\\[" .. oldname .. "\\]\\]"
+        local newlink = "\\[\\[" .. newname .. "\\]\\]"
+        recursive_substitution(M.Cfg.home, oldlink, newlink)
+    end
+end
+
 --
 -- GotoDate:
 -- ----------
@@ -2564,6 +2607,7 @@ M.new_note = CreateNote
 M.goto_thisweek = GotoThisWeek
 M.find_weekly_notes = FindWeeklyNotes
 M.yank_notelink = YankLink
+M.rename_note = RenameNote
 M.new_templated_note = CreateNoteSelectTemplate
 M.show_calendar = ShowCalendar
 M.CalendarSignDay = CalendarSignDay
@@ -2592,6 +2636,7 @@ local TelekastenCmd = {
             { "goto thisweek", "goto_thisweek", M.goto_thisweek },
             { "find weekly notes", "find_weekly_notes", M.find_weekly_notes },
             { "yank link to note", "yank_notelink", M.yank_notelink },
+            { "rename note", "rename_note", M.rename_note },
             {
                 "new templated note",
                 "new_templated_note",