-- lua/core/keymaps.lua

local keymap = vim.keymap

-- Set space as leader key
vim.g.mapleader = " "
vim.g.maplocalleader = " "

-- General keymaps
keymap.set("n", "<leader>e", ":Lex 30<CR>", { desc = "Open file explorer" })
keymap.set("n", "<leader>w", ":w<CR>", { desc = "Save file" })
keymap.set("n", "<leader>q", ":q<CR>", { desc = "Quit" })
keymap.set("n", "<leader>h", ":nohlsearch<CR>", { desc = "Clear search highlight" })
keymap.set('n', '<leader>e', vim.diagnostic.open_float, { desc = "Show diagnostics at cursor" })

-- Diagnostic keymaps
vim.o.updatetime = 300
vim.api.nvim_create_autocmd("CursorHold", {
  callback = function()
    vim.diagnostic.open_float(nil, { focus = false })
  end,
})
keymap.set('n', 'K', vim.lsp.buf.hover, { desc = "Show hover info" })

-- Telescope keymaps
keymap.set("n", "<leader>tf", "<cmd>Telescope find_files<cr>", { desc = "Find Files" })
keymap.set("n", "<leader>tg", "<cmd>Telescope live_grep<cr>", { desc = "Live Grep" })
keymap.set("n", "<leader>tb", "<cmd>Telescope buffers<cr>", { desc = "Find Buffers" })
keymap.set("n", "<leader>th", "<cmd>Telescope help_tags<cr>", { desc = "Help Tags" })

-- Editor format
keymap.set("n", "<leader>f", function() vim.lsp.buf.format({ async = true }) end, { desc = "Format Document" })

-- Window navigation
keymap.set("n", "<C-h>", "<C-w>h", { desc = "Move Left" })
keymap.set("n", "<C-j>", "<C-w>j", { desc = "Move Down" })
keymap.set("n", "<C-k>", "<C-w>k", { desc = "Move Up" })
keymap.set("n", "<C-l>", "<C-w>l", { desc = "Move Right" })

-- Resize with arrows
keymap.set("n", "<C-Up>", ":resize -2<CR>", { desc = "Resize Up" })
keymap.set("n", "<C-Down>", ":resize +2<CR>", { desc = "Resize Down" })
keymap.set("n", "<C-Left>", ":vertical resize -2<CR>", { desc = "Resize Left" })
keymap.set("n", "<C-Right>", ":vertical resize +2<CR>", { desc = "Resize Right" })

-- Copy to system clipboard
keymap.set('n', '<leader>y', '"+y')
keymap.set('v', '<leader>y', '"+y')

-- Snippet expansion (using LuaSnip)

-- Function to write a standard C template
local function write_c_template()
  local lines = {
    "#include <stdio.h>",
    "#include <stdlib.h>",
    "",
    "int main(int argc, char *argv[]) {",
    "    printf(\"Hello World!\\n\");",
    "    return 0;",
    "}",
  }
  vim.api.nvim_buf_set_lines(0, 0, -1, false, lines)
end

-- Function to write a standard C++ template
local function write_cpp_template()
  local lines = {
    "#include <iostream>",
    "using namespace std;",
    "",
    "int main() {",
    "    cout << \"Hello World!\" << endl;",
    "    return 0;",
    "}",
  }
  vim.api.nvim_buf_set_lines(0, 0, -1, false, lines)
end

-- Create the commands
vim.api.nvim_create_user_command("C", write_c_template, {})
vim.api.nvim_create_user_command("Cpp", write_cpp_template, {})