local function set_python_env()
    local os = vim.loop.os_uname().sysname
    if os == 'Windows_NT' then
        vim.keymap.set('n', '<F5>', ':!python %<CR>')
    elseif os == 'Linux' then
        vim.keymap.set('n', '<F5>', ':!python3 %<CR>')
    end
end


vim.g.mapleader = " "
vim.keymap.set("n", "<leader>pv", vim.cmd.Ex)

vim.keymap.set('n', '<F2>', ':!jai -quiet % && ./%:r<CR>')
vim.keymap.set('n', '<F3>', ':!runghc %<CR>')
set_python_env()
vim.keymap.set('n', '<F4>', ':!make<CR>')

-- Move marked lines up
vim.keymap.set('v', 'J', ":m '>+1<CR>gv=gv")
-- Move marked lines down
vim.keymap.set('v', 'K', ":m '<-2<CR>gv=gv")

vim.keymap.set('n', 'J', 'mzJ`z')
vim.keymap.set('n', '<leader>s', ":%s/\\<<C-r><C-w>\\>/<C-r><C-w>/gI<Left><Left><Left>")

vim.keymap.set('n', '<leader>c', '"+y')
vim.keymap.set('n', '<leader>cc', '"+yy')
vim.keymap.set('v', '<leader>c', '"+y')

-- Modify windows/panes
vim.keymap.set('n', '<leader>.', '5<C-w>>')
vim.keymap.set('n', '<leader>,', '5<C-w><')
vim.keymap.set('n', '<leader>+', '2<C-w>+')
vim.keymap.set('n', '<leader>#', '2<C-w>-')
vim.keymap.set('n', '<leader>-', '<C-w>=')

-- Convert Backslashes to forwardslashes
vim.keymap.set('v', '<leader>win', ":s/\\\\/\\//g<Enter><$><Esc>")

-- Show Diagnostics
vim.keymap.set('n', '<leader>d', vim.diagnostic.open_float, { desc = "Show diagnostics float" })

-- Add semicolon to the end
vim.keymap.set('n', '<leader>;', 'A;<Esc>')
vim.keymap.set('i', '<C-,>', '<C-o>A;<C-o>o')

-- Create new tab
vim.keymap.set('n', '<leader>t', ':tab split<Enter>')

-- Create new tab on filepath under cursor
vim.keymap.set('n', '<leader>f', '<C-w>gf')