Add tagging

[rbdr/nota.nvim] / lua / tasks.lua

diff --git a/lua/tasks.lua b/lua/tasks.lua
index 66dbc48d4422845cd5a6bd152f04ed9fc0281949..33fce8f23717eaab87d9b20f83622f0e5dd338a3 100644 (file)
--- a/lua/tasks.lua
+++ b/lua/tasks.lua
@@ -14,6 +14,18 @@ local unchecked_important_pattern = '^(%s*)%* %[ %]'
 local checked_pattern = '^(%s*)%- %[x%]'
 local checked_important_pattern = '^(%s*)%* %[x%]'
 
+local function is_open_task(line)
+  return line:match(unchecked_pattern) or line:match(unchecked_important_pattern)
+end
+
+local function is_completed_task(line)
+  return line:match(checked_pattern) or line:match(checked_important_pattern)
+end
+
+local function is_task(line)
+    return is_open_task(line) or is_completed_task(line)
+end
+
 local function open(path)
   local parent = Util.directory_name(path)
   Util.ensure_directory_exists(parent)
@@ -24,10 +36,37 @@ local function open_inbox()
   local path = Configuration.path_for(Configuration.configuration.tasks.inbox)
   open(path)
 end
+
 local function open_someday()
   local path = Configuration.path_for(Configuration.configuration.tasks.someday)
   open(path)
 end
+
+local function parse_tags(tag_string)
+  local tags = {}
+  for tag in tag_string:gmatch('([^,]+)') do
+    table.insert(tags, tag)
+  end
+  return tags
+end
+
+local function table_contains_value(target_table, value)
+  for _, table_value in ipairs(target_table) do
+    if table_value == value then
+        return true
+    end
+  end
+  return false
+end
+
+local function remove_value(target_table, value)
+  for i, table_value in ipairs(target_table) do
+    if table_value == value then
+      table.remove(target_table, i)
+    end
+  end
+end
+
 -------------------------------------------------------------------------------
 -- Public Interface
 -------------------------------------------------------------------------------
@@ -45,6 +84,8 @@ function Tasks.toggle()
         line = line:gsub(checked_pattern, '%1- [ ]', 1)
     elseif line:match(checked_important_pattern) then
         line = line:gsub(checked_important_pattern, '%1* [ ]', 1)
+    else
+      api.nvim_err_writeln('Toggle completion only works on tasks')
     end
 
     api.nvim_buf_set_lines(0, line_number - 1, line_number, false, {line})
@@ -63,6 +104,8 @@ function Tasks.toggle_importance()
         line = line:gsub(checked_pattern, '%1* [x]', 1)
     elseif line:match(checked_important_pattern) then
         line = line:gsub(checked_important_pattern, '%1- [x]', 1)
+    else
+      api.nvim_err_writeln('Toggle importance only works on tasks')
     end
 
     api.nvim_buf_set_lines(0, line_number - 1, line_number, false, {line})
@@ -83,8 +126,63 @@ function Tasks.capture()
 end
 
 --- Tag a task
-function Tasks.tag()
-  error('Not yet implemented')
+function Tasks.tag(tag)
+  local line_number = api.nvim_win_get_cursor(0)[1]
+  local line = api.nvim_get_current_line()
+  if is_task(line) then
+    local pattern = ':(.*):$'
+    local tag_string = line:match(pattern) or ''
+    if not tag or tag == '' then
+      tag = vim.fn.input('Add new tag for task (' .. tag_string .. '): ')
+      if not tag or tag == '' then
+        return
+      end
+    end
+    local tags = parse_tags(tag_string)
+    if not table_contains_value(tags, tag) then
+      table.insert(tags, tag)
+      local new_tags = table.concat(tags, ',')
+      if line:match(pattern) then
+        line = line:gsub(pattern, ':' .. new_tags .. ':', 1)
+      else
+        line = line .. '    :' .. new_tags .. ':'
+      end
+      api.nvim_buf_set_lines(0, line_number - 1, line_number, false, {line})
+    end
+  else
+    api.nvim_err_writeln('Tagging only works on tasks')
+  end
+end
+
+--- Remove tag on a task
+function Tasks.remove_tag(tag)
+  local line_number = api.nvim_win_get_cursor(0)[1]
+  local line = api.nvim_get_current_line()
+  if is_task(line) then
+    local pattern = ':(.*):$'
+    local tag_string = line:match(pattern)
+    if not tag_string then
+      api.nvim_err_writeln('No tags to remove')
+      return
+    end
+
+    if not tag or tag == '' then
+      tag = vim.fn.input('Pick tag to remove (' .. tag_string .. '): ')
+    end
+
+    local tags = parse_tags(tag_string)
+    remove_value(tags, tag)
+    local new_tags = ''
+
+    if #tags > 0 then
+      new_tags = ':' .. table.concat(tags, ',') .. ':'
+    end
+
+    line = line:gsub(pattern, new_tags, 1):gsub('%s+$', '')
+    api.nvim_buf_set_lines(0, line_number - 1, line_number, false, {line})
+  else
+    api.nvim_err_writeln('Tagging only works on tasks')
+  end
 end
 
 --- Reschedule a task for today
@@ -121,7 +219,7 @@ function Tasks.reschedule(new_date)
   local line = api.nvim_get_current_line()
   local filename = vim.fn.expand('%:t:r')
 
-  if line:match(unchecked_pattern) or line:match(unchecked_important_pattern) then
+  if is_open_task(line) then
     if Util.is_before_today(filename) and line:match(unchecked_pattern) then
       local rescheduled_line = line:gsub(unchecked_pattern, '%1- [>' .. new_date .. ']', 1)
       api.nvim_buf_set_lines(0, line_number - 1, line_number, false, {rescheduled_line})