From b3a58db72e190073682a1c54b7ed3f6f0c512adf Mon Sep 17 00:00:00 2001
From: Yuta Katayama <8683947+yutkat@users.noreply.github.com>
Date: Sun, 1 May 2022 04:39:48 +0900
Subject: [PATCH] feat: Add sorting feature [closes #85]

* feat: Add sorting feature #85

* fix: Remove the lines that should not be sorted
---
 README.md          |  3 +++
 doc/telekasten.txt | 12 ++++++++++++
 lua/telekasten.lua | 26 +++++++++++++++++++++-----
 3 files changed, 36 insertions(+), 5 deletions(-)

diff --git a/README.md b/README.md
index a5490f0..4e11f9f 100644
--- a/README.md
+++ b/README.md
@@ -271,6 +271,9 @@ require('telekasten').setup({
     -- markdown: ![](image_subdir/xxxxx.png)
     image_link_style = "markdown",
 
+    -- default sort option: 'filename', 'modified'
+    sort = "filename",
+
     -- integrate with calendar-vim
     plug_into_calendar = true,
     calendar_opts = {
diff --git a/doc/telekasten.txt b/doc/telekasten.txt
index 4478bc5..f0345e0 100644
--- a/doc/telekasten.txt
+++ b/doc/telekasten.txt
@@ -92,6 +92,8 @@ telekasten.setup({opts})
       -- markdown: ![](image_subdir/xxxxx.png)
       image_link_style = "wiki",
 
+      -- default sort option: 'filename', 'modified'
+      sort = "filename",
 
       -- specific note templates
       -- set to `nil` or do not specify if you do not want a template
@@ -245,6 +247,16 @@ telekasten.setup({opts})
 
         Default: 'markdown'
 
+                                    *telekasten.settings.sort*
+    sort: ~
+        Order the notes by the option.
+
+        Valid options are:
+        - 'filename'
+        - 'modified'
+
+        Default: 'filename'
+
                            *telekasten.settings.follow_create_nonexisting*
     follow_creates_nonexisting: ~
         Flag that determines whether non-existing notes should be created when
diff --git a/lua/telekasten.lua b/lua/telekasten.lua
index 1a2f6b6..7a17f32 100644
--- a/lua/telekasten.lua
+++ b/lua/telekasten.lua
@@ -99,6 +99,9 @@ M.Cfg = {
     -- markdown: ![](image_subdir/xxxxx.png)
     image_link_style = "markdown",
 
+    -- default sort option: 'filename', 'modified'
+    sort = "filename",
+
     -- when linking to a note in subdir/, create a [[subdir/title]] link
     -- instead of a [[title only]] link
     subdirs_in_links = true,
@@ -933,10 +936,6 @@ function Pinfo:resolve_link(title, opts)
     return self
 end
 
-local function order_numeric(a, b)
-    return a > b
-end
-
 -- local function endswith(s, ending)
 -- 	return ending == "" or s:sub(-#ending) == ending
 -- end
@@ -1013,7 +1012,16 @@ local function find_files_sorted(opts)
     local file_list = scan.scan_dir(opts.cwd, {})
     local filter_extensions = opts.filter_extensions or M.Cfg.filter_extensions
     file_list = filter_filetypes(file_list, filter_extensions)
-    table.sort(file_list, order_numeric)
+    local sort_option = opts.sort or "filename"
+    if sort_option == "modified" then
+        table.sort(file_list, function(a, b)
+            return vim.fn.getftime(a) > vim.fn.getftime(b)
+        end)
+    else
+        table.sort(file_list, function(a, b)
+            return a > b
+        end)
+    end
 
     local counts = nil
     if opts.show_link_counts then
@@ -1322,6 +1330,7 @@ local function FindDailyNotes(opts)
             map("n", "<esc>", picker_actions.close(opts))
             return true
         end,
+        sort = M.Cfg.sort,
     })
 end
 
@@ -1371,6 +1380,7 @@ local function FindWeeklyNotes(opts)
             map("n", "<esc>", picker_actions.close(opts))
             return true
         end,
+        sort = M.Cfg.sort,
     })
 end
 
@@ -1422,6 +1432,7 @@ local function InsertLink(opts)
             return true
         end,
         find_command = M.Cfg.find_command,
+        sort = M.Cfg.sort,
     })
 end
 
@@ -1506,6 +1517,7 @@ local function PreviewImg(opts)
                 map("n", "<c-cr>", picker_actions.paste_img_link(opts))
                 return true
             end,
+            sort = M.Cfg.sort,
         })
     else
         print("File not found: " .. M.Cfg.home .. "/" .. fname)
@@ -1556,6 +1568,7 @@ local function BrowseImg(opts)
             map("n", "<c-cr>", picker_actions.paste_img_link(opts))
             return true
         end,
+        sort = M.Cfg.sort,
     })
 end
 
@@ -1793,6 +1806,7 @@ local function FindNotes(opts)
             map("n", "<c-cr>", picker_actions.paste_link(opts))
             return true
         end,
+        sort = M.Cfg.sort,
     })
 end
 
@@ -1843,6 +1857,7 @@ local function InsertImgLink(opts)
             map("n", "<c-cr>", picker_actions.paste_img_link(opts))
             return true
         end,
+        sort = M.Cfg.sort,
     })
 end
 
@@ -2204,6 +2219,7 @@ local function FollowLink(opts)
                 map("n", "<esc>", picker_actions.close(opts))
                 return true
             end,
+            sort = M.Cfg.sort,
         })
     end