local M = {}

--- Sets a non-recursive keymap with optional description.
---@param mode string|table Mode(s) for the keymap.
---@param lhs string Left-hand side of the keymap.
---@param rhs string|function Right-hand side of the keymap.
---@param desc string|nil Description for the keymap.
---@param bufopts table|nil Additional options for the keymap.
M.mapkey = function(mode, lhs, rhs, desc, bufopts)
	bufopts = bufopts or {}
	if desc then
		bufopts.desc = desc
	end
	vim.keymap.set(mode, lhs, rhs, bufopts)
end

--- Sets a non-recursive keymap for normal mode.
---@param lhs string Left-hand side of the keymap.
---@param rhs string|function Right-hand side of the keymap.
---@param desc string|nil Description for the keymap.
---@param bufopts table|nil Additional options for the keymap.
function M.nmapkey(lhs, rhs, desc, bufopts)
	M.mapkey("n", lhs, rhs, desc, bufopts)
end

--- Sets a non-recursive keymap for visual mode.
---@param lhs string Left-hand side of the keymap.
---@param rhs string|function Right-hand side of the keymap.
---@param desc string|nil Description for the keymap.
---@param bufopts table|nil Additional options for the keymap.
function M.vmapkey(lhs, rhs, desc, bufopts)
	M.mapkey("v", lhs, rhs, desc, bufopts)
end

--- Sets a non-recursive keymap for normal and visual mode.
---@param lhs string Left-hand side of the keymap.
---@param rhs string|function Right-hand side of the keymap.
---@param desc string|nil Description for the keymap.
---@param bufopts table|nil Additional options for the keymap.
function M.nvmapkey(lhs, rhs, desc, bufopts)
	M.mapkey({ "n", "v" }, lhs, rhs, desc, bufopts)
end

function M.common_mappings(opts)
	local telescope = require("telescope.builtin")
	M.nmapkey("gR", telescope.lsp_references, "[g]et [R]eferences", opts)
	M.nmapkey("gd", telescope.lsp_definitions, "[g]et [d]efinitions", opts)
	M.nmapkey("gi", telescope.lsp_implementations, "[g]et [i]mplementations", opts)
	M.nmapkey("gt", telescope.lsp_type_definitions, "[g]et [t]ype definitions", opts)
	M.nmapkey("gD", vim.lsp.buf.declaration, "[g]o to [D]eclaration", opts)
	M.nmapkey("K", vim.lsp.buf.hover, "Show do[K]umentation for what is under cursor", opts)
	M.nmapkey("<leader>hh", vim.lsp.buf.signature_help, "Signature [hh]elp", opts)

	M.nmapkey("<leader>wa", vim.lsp.buf.add_workspace_folder, "[w]orkspace [a]dd folder", opts)
	M.nmapkey("<leader>wr", vim.lsp.buf.remove_workspace_folder, "[w]orkspace [r]emove folder", opts)
	M.nmapkey("<leader>wl", vim.lsp.buf.list_workspace_folders, "[w]orkspace [l]ist folder", opts)
	M.nvmapkey("<leader>ca", vim.lsp.buf.code_action, "See available [c]ode [a]ctions", opts)
	M.nmapkey("<leader>rn", vim.lsp.buf.rename, "Smart [r]e[n]ame", opts)
	M.nmapkey("<leader>d", vim.diagnostic.open_float, "Show line [d]iagnostics", opts)
	M.nmapkey("<leader>D", telescope.diagnostics, "Show buffer [D]iagnostics", opts)
	M.nmapkey("[d", function()
		vim.diagnostic.jump({ count = -1, float = true })
	end, "Go to previous diagnostic", opts)
	M.nmapkey("]d", function()
		vim.diagnostic.jump({ count = 1, float = true })
	end, "Go to next diagnostic", opts)
	M.nmapkey("<leader>q", vim.diagnostic.setloclist, "Add buffer diagnostics to location list", opts)
	M.nmapkey("<leader>rs", "<cmd>LspRestart<cr>", "Restart LSP", opts)
end

local function any_file_exists_at_root(names)
	local cwd = vim.fn.getcwd()
	for _, name in ipairs(names) do
		local path = cwd .. "/" .. name
		if vim.loop.fs_stat(path) then
			return true
		end
	end
	return false
end

function M.cwd_is_biome()
	return any_file_exists_at_root({ "biome.json", "biome.jsonc" })
end
function M.cwd_is_prettier()
	return any_file_exists_at_root({ ".prettierrc", "prettierrc.json", "prettierrc.jsonc", ".prettierrc.js" })
end
function M.cwd_is_eslint()
	return any_file_exists_at_root({ ".eslintrc", ".eslintrc.js", ".eslintrc.json" })
end

function M.buf_is_obsidian(bufnr)
	local clients = vim.lsp.get_clients({ bufnr = bufnr })
	for _, client in ipairs(clients) do
		if client.name == "obsidian-ls" then
			return true
		end
	end
	return false
end

return M