adding functionalities on the buffer

lua/ideaDrop/utils/constants.lua

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+-- ideaDrop/utils/constants.lua
+local M = {}
+
+-- File extensions
+M.FILE_EXTENSIONS = {
+	MARKDOWN = ".md",
+	LUA = ".lua",
+}
+
+-- Default file templates
+M.DEFAULT_TEMPLATES = {
+	IDEA = {
+		"# %s",
+		"",
+		"- ",
+	},
+	MEETING = {
+		"# Meeting: %s",
+		"",
+		"## Date: %s",
+		"## Attendees:",
+		"- ",
+		"",
+		"## Agenda:",
+		"- ",
+		"",
+		"## Notes:",
+		"- ",
+		"",
+		"## Action Items:",
+		"- [ ] ",
+	},
+	PROJECT = {
+		"# Project: %s",
+		"",
+		"## Overview:",
+		"",
+		"## Goals:",
+		"- ",
+		"",
+		"## Tasks:",
+		"- [ ] ",
+		"",
+		"## Notes:",
+		"- ",
+	},
+}
+
+-- Window dimensions (as percentages of screen)
+M.WINDOW_DIMENSIONS = {
+	RIGHT_SIDE_WIDTH = 0.3,    -- 30% of screen width
+	TREE_WIDTH = 0.25,         -- 25% of screen width
+	FLOATING_HEIGHT = 0.8,     -- 80% of screen height
+}
+
+-- Buffer options
+M.BUFFER_OPTIONS = {
+	IDEA_BUFFER = {
+		filetype = "markdown",
+		buftype = "acwrite",
+		bufhidden = "hide",
+	},
+	TREE_BUFFER = {
+		filetype = "ideaDrop-tree",
+		buftype = "nofile",
+		modifiable = false,
+		bufhidden = "hide",
+	},
+}
+
+-- Window options
+M.WINDOW_OPTIONS = {
+	RIGHT_SIDE = {
+		wrap = true,
+		number = true,
+		relativenumber = false,
+		cursorline = true,
+	},
+	TREE = {
+		wrap = false,
+		number = false,
+		relativenumber = false,
+		cursorline = true,
+	},
+}
+
+-- Search settings
+M.SEARCH_SETTINGS = {
+	MAX_RESULTS = 20,
+	CONTEXT_LENGTH = 80,
+	FUZZY_SCORE_BONUS = 10,
+}
+
+-- Tag settings
+M.TAG_SETTINGS = {
+	PATTERN = "#([%w%-_]+)",
+	MAX_DEPTH = 10,
+}
+
+-- Common words to exclude from tags
+M.COMMON_WORDS = {
+	"the", "and", "or", "but", "in", "on", "at", "to", "for", "of", "with",
+	"by", "is", "are", "was", "were", "be", "been", "have", "has", "had",
+	"do", "does", "did", "will", "would", "could", "should", "may", "might",
+	"can", "this", "that", "these", "those", "i", "you", "he", "she", "it",
+	"we", "they", "me", "him", "her", "us", "them", "my", "your", "his",
+	"her", "its", "our", "their", "mine", "yours", "hers", "ours", "theirs"
+}
+
+-- Icons for different file types and actions
+M.ICONS = {
+	FILE = "📄",
+	DIRECTORY = "📁",
+	IDEA = "💡",
+	SEARCH = "🔍",
+	TAG = "🏷️",
+	TREE = "🌳",
+	SUCCESS = "✅",
+	ERROR = "❌",
+	WARNING = "⚠️",
+	INFO = "ℹ️",
+	SAVE = "💾",
+	REFRESH = "🔄",
+}
+
+-- Key mappings (default)
+M.DEFAULT_KEYMAPS = {
+	TOGGLE_TREE = "<C-t>",
+	REFRESH_FILE = "<C-r>",
+	CLOSE_WINDOW = "q",
+	SELECT_ITEM = "<CR>",
+}
+
+-- Notification messages
+M.MESSAGES = {
+	PLUGIN_LOADED = "ideaDrop loaded!",
+	NO_FILES_FOUND = "📂 No idea files found",
+	NO_TAGS_FOUND = "🏷️ No tags found in your ideas",
+	NO_SEARCH_RESULTS = "🔍 No results found for '%s'",
+	FILE_SAVED = "💾 Idea saved to %s",
+	FILE_REFRESHED = "🔄 File refreshed",
+	TAG_ADDED = "✅ Added tag '%s' to %s",
+	TAG_REMOVED = "✅ Removed tag '%s' from %s",
+	TAG_EXISTS = "🏷️ Tag '%s' already exists in file",
+	TAG_NOT_FOUND = "🏷️ Tag '%s' not found in file",
+	NO_ACTIVE_FILE = "❌ No active idea file. Open an idea first.",
+	PROVIDE_TAG = "❌ Please provide a tag name",
+	PROVIDE_QUERY = "❌ Please provide a search query",
+}
+
+return M 

lua/ideaDrop/utils/keymaps.lua

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+-- ideaDrop/utils/keymaps.lua
+local M = {}
+
+---Setup function for keymaps
+---@return nil
+function M.setup()
+	-- Global keymaps for ideaDrop
+	-- These can be customized by users in their config
+	
+	-- Example: Quick access to ideaDrop commands
+	-- vim.keymap.set("n", "<leader>id", ":IdeaRight<CR>", { desc = "Open today's idea" })
+	-- vim.keymap.set("n", "<leader>it", ":IdeaTree<CR>", { desc = "Open idea tree" })
+	-- vim.keymap.set("n", "<leader>is", ":IdeaSearch ", { desc = "Search ideas" })
+	-- vim.keymap.set("n", "<leader>it", ":IdeaTags<CR>", { desc = "Browse tags" })
+	
+	-- Note: Keymaps are commented out by default to avoid conflicts
+	-- Users can uncomment and customize these in their config
+end
+
+return M

lua/ideaDrop/utils/utils.lua

@@ -0,0 +1,181 @@
+-- ideaDrop/utils/utils.lua
+local M = {}
+
+---@class Utils
+---@field ensure_dir fun(path: string): nil
+---@field get_relative_path fun(full_path: string, base_path: string): string
+---@field sanitize_filename fun(filename: string): string
+---@field format_date fun(date_format: string|nil): string
+---@field truncate_string fun(str: string, max_length: number): string
+---@field table_contains fun(tbl: table, value: any): boolean
+---@field deep_copy fun(orig: table): table
+
+---Ensures a directory exists, creating it if necessary
+---@param path string Directory path to ensure
+---@return nil
+function M.ensure_dir(path)
+	if vim.fn.isdirectory(path) == 0 then
+		vim.fn.mkdir(path, "p")
+	end
+end
+
+---Gets the relative path from a full path
+---@param full_path string Full file path
+---@param base_path string Base directory path
+---@return string Relative path
+function M.get_relative_path(full_path, base_path)
+	if full_path:sub(1, #base_path) == base_path then
+		return full_path:sub(#base_path + 2) -- Remove base_path + "/"
+	end
+	return full_path
+end
+
+---Sanitizes a filename for safe file creation
+---@param filename string Original filename
+---@return string Sanitized filename
+function M.sanitize_filename(filename)
+	-- Remove or replace invalid characters
+	local sanitized = filename:gsub("[<>:\"/\\|?*]", "_")
+	-- Remove leading/trailing spaces and dots
+	sanitized = sanitized:gsub("^[%s%.]+", ""):gsub("[%s%.]+$", "")
+	-- Ensure it's not empty
+	if sanitized == "" then
+		sanitized = "untitled"
+	end
+	return sanitized
+end
+
+---Formats current date with optional format
+---@param date_format string|nil Date format string (default: "%Y-%m-%d")
+---@return string Formatted date string
+function M.format_date(date_format)
+	date_format = date_format or "%Y-%m-%d"
+	return os.date(date_format)
+end
+
+---Truncates a string to specified length with ellipsis
+---@param str string String to truncate
+---@param max_length number Maximum length
+---@return string Truncated string
+function M.truncate_string(str, max_length)
+	if #str <= max_length then
+		return str
+	end
+	return str:sub(1, max_length - 3) .. "..."
+end
+
+---Checks if a table contains a specific value
+---@param tbl table Table to search
+---@param value any Value to find
+---@return boolean True if value is found
+function M.table_contains(tbl, value)
+	for _, v in ipairs(tbl) do
+		if v == value then
+			return true
+		end
+	end
+	return false
+end
+
+---Creates a deep copy of a table
+---@param orig table Original table
+---@return table Deep copy of the table
+function M.deep_copy(orig)
+	local copy
+	if type(orig) == "table" then
+		copy = {}
+		for orig_key, orig_value in next, orig, nil do
+			copy[M.deep_copy(orig_key)] = M.deep_copy(orig_value)
+		end
+		setmetatable(copy, M.deep_copy(getmetatable(orig)))
+	else
+		copy = orig
+	end
+	return copy
+end
+
+---Splits a string by delimiter
+---@param str string String to split
+---@param delimiter string Delimiter character
+---@return table Array of substrings
+function M.split_string(str, delimiter)
+	delimiter = delimiter or "\n"
+	local result = {}
+	for match in (str .. delimiter):gmatch("(.-)" .. delimiter) do
+		table.insert(result, match)
+	end
+	return result
+end
+
+---Joins table elements with a delimiter
+---@param tbl table Table to join
+---@param delimiter string Delimiter string
+---@return string Joined string
+function M.join_strings(tbl, delimiter)
+	delimiter = delimiter or "\n"
+	return table.concat(tbl, delimiter)
+end
+
+---Gets file extension from filename
+---@param filename string Filename
+---@return string File extension (without dot)
+function M.get_file_extension(filename)
+	return filename:match("%.([^%.]+)$") or ""
+end
+
+---Removes file extension from filename
+---@param filename string Filename
+---@return string Filename without extension
+function M.remove_file_extension(filename)
+	return filename:match("(.+)%.[^%.]+$") or filename
+end
+
+---Checks if a string starts with a prefix
+---@param str string String to check
+---@param prefix string Prefix to look for
+---@return boolean True if string starts with prefix
+function M.starts_with(str, prefix)
+	return str:sub(1, #prefix) == prefix
+end
+
+---Checks if a string ends with a suffix
+---@param str string String to check
+---@param suffix string Suffix to look for
+---@return boolean True if string ends with suffix
+function M.ends_with(str, suffix)
+	return str:sub(-#suffix) == suffix
+end
+
+---Escapes special characters in a string for shell commands
+---@param str string String to escape
+---@return string Escaped string
+function M.escape_shell(str)
+	return vim.fn.shellescape(str)
+end
+
+---Gets the current buffer's file path
+---@return string|nil Current buffer file path or nil
+function M.get_current_file_path()
+	local buf_name = vim.api.nvim_buf_get_name(0)
+	if buf_name and buf_name ~= "" then
+		return buf_name
+	end
+	return nil
+end
+
+---Gets the current working directory
+---@return string Current working directory
+function M.get_cwd()
+	return vim.fn.getcwd()
+end
+
+---Shows a notification with optional log level
+---@param message string Message to show
+---@param level string|nil Log level (INFO, WARN, ERROR)
+---@return nil
+function M.notify(message, level)
+	level = level or vim.log.levels.INFO
+	vim.notify(message, level)
+end
+
+return M