feat: modernize the plugin

lua/cp/health.lua

@@ -0,0 +1,107 @@
+local M = {}
+
+local function check_nvim_version()
+	if vim.fn.has("nvim-0.10.0") == 1 then
+		vim.health.ok("Neovim 0.10.0+ detected")
+	else
+		vim.health.error("cp.nvim requires Neovim 0.10.0+")
+	end
+end
+
+local function check_uv()
+	if vim.fn.executable("uv") == 1 then
+		vim.health.ok("uv executable found")
+
+		local result = vim.system({ "uv", "--version" }, { text = true }):wait()
+		if result.code == 0 then
+			vim.health.info("uv version: " .. result.stdout:gsub("\n", ""))
+		end
+	else
+		vim.health.warn("uv not found - install from https://docs.astral.sh/uv/ for problem scraping")
+	end
+end
+
+local function check_python_env()
+	local plugin_path = debug.getinfo(1, "S").source:sub(2)
+	plugin_path = vim.fn.fnamemodify(plugin_path, ":h:h:h:h")
+	local venv_dir = plugin_path .. "/.venv"
+
+	if vim.fn.isdirectory(venv_dir) == 1 then
+		vim.health.ok("Python virtual environment found at " .. venv_dir)
+	else
+		vim.health.warn("Python virtual environment not set up - run :CP command to initialize")
+	end
+end
+
+local function check_scrapers()
+	local plugin_path = debug.getinfo(1, "S").source:sub(2)
+	plugin_path = vim.fn.fnamemodify(plugin_path, ":h:h:h:h")
+
+	local scrapers = { "atcoder.py", "codeforces.py", "cses.py" }
+	for _, scraper in ipairs(scrapers) do
+		local scraper_path = plugin_path .. "/scrapers/" .. scraper
+		if vim.fn.filereadable(scraper_path) == 1 then
+			vim.health.ok("Scraper found: " .. scraper)
+		else
+			vim.health.error("Missing scraper: " .. scraper)
+		end
+	end
+end
+
+local function check_luasnip()
+	local has_luasnip, luasnip = pcall(require, "luasnip")
+	if has_luasnip then
+		vim.health.ok("LuaSnip integration available")
+		local snippet_count = #luasnip.get_snippets("all")
+		vim.health.info("LuaSnip snippets loaded: " .. snippet_count)
+	else
+		vim.health.info("LuaSnip not available - template expansion will be limited")
+	end
+end
+
+local function check_directories()
+	local cwd = vim.fn.getcwd()
+	local build_dir = cwd .. "/build"
+	local io_dir = cwd .. "/io"
+
+	if vim.fn.isdirectory(build_dir) == 1 then
+		vim.health.ok("Build directory exists: " .. build_dir)
+	else
+		vim.health.info("Build directory will be created when needed")
+	end
+
+	if vim.fn.isdirectory(io_dir) == 1 then
+		vim.health.ok("IO directory exists: " .. io_dir)
+	else
+		vim.health.info("IO directory will be created when needed")
+	end
+end
+
+local function check_config()
+	local cp = require("cp")
+	if cp.is_initialized() then
+		vim.health.ok("Plugin initialized")
+
+		if vim.g.cp_contest then
+			vim.health.info("Current contest: " .. vim.g.cp_contest)
+		else
+			vim.health.info("No contest mode set")
+		end
+	else
+		vim.health.warn("Plugin not initialized - configuration may be incomplete")
+	end
+end
+
+function M.check()
+	vim.health.start("cp.nvim health check")
+
+	check_nvim_version()
+	check_uv()
+	check_python_env()
+	check_scrapers()
+	check_luasnip()
+	check_directories()
+	check_config()
+end
+
+return M