local function open_nvim_tree()
    -- open the tree
    require("nvim-tree.api").tree.open()
end

-- Functional wrapper for mapping custom keybindings
local function map(mode, lhs, rhs, opts)
    local options = { noremap = true }
    if opts then
        options = vim.tbl_extend("force", options, opts)
    end
    vim.api.nvim_set_keymap(mode, lhs, rhs, options)
end

--mardown preview settings
vim.cmd [[
    let g:mkdp_echo_preview_url = 1
]]


----------------------
-- general setup start
----------------------

-- open nvim tree on start
vim.api.nvim_create_autocmd({ "VimEnter" }, { callback = open_nvim_tree })

-- disabling virtual text
VIRTUAL_TEXT_ENABLED = true
function switch_virtual_text()
    VIRTUAL_TEXT_ENABLED = not VIRTUAL_TEXT_ENABLED
    vim.diagnostic.config({
        virtual_text = VIRTUAL_TEXT_ENABLED,
    })
end

map("n", "<leader>vt", ":lua switch_virtual_text()<CR>")
map("c", "<C-r>", ":Telescope command_history<CR>")
map("n", "<leader>gs", ":Telescope git_status<CR>")
map("n", "<leader>gc", ":Telescope git_commits<CR>")
map("n", "<leader>gb", ":Telescope git_branches<CR>")

map("n", "<leader>ng", ":Neogit<CR>")

map("n", "<leader>bc", ":bufdo bd<CR>")

-- dap
map("n", "<leader>db", ":lua require'dap'.toggle_breakpoint()<CR>")
map("n", "<leader>dc", ":lua require'dap'.continue()<CR>")
map("n", "<leader>dg", ":lua require'dapui'.toggle()<CR>")

-- tab lines in normal and visual mode
map("n", "<Tab>", ">>")
map("n", "<S-Tab>", "<<")
map("i", "<S-Tab>", "<Esc><<i")
map("n", "<Tab>", ">>")
map("v", "<Tab>", ">gv")
map("v", "<S-Tab>", "<gv")

-- disable underline in lsp diagnostics
vim.lsp.handlers["textDocument/publishDiagnostics"] =
    vim.lsp.with(
        vim.lsp.diagnostic.on_publish_diagnostics,
        {
            underline = false
        }
    )

vim.opt.mouse = "c"        -- set mouse in command line mode
vim.opt.colorcolumn = "80" -- highlight this column
vim.opt.relativenumber = true
vim.opt.number = true
vim.opt.clipboard = "unnamedplus" -- synchronize with system clipboard
vim.opt.swapfile = false
vim.opt.cursorline = true
vim.opt.tabstop = 4      -- number of columns occupied by a tab
vim.opt.softtabstop = 4  -- see multiple spaces as tabstops so <BS> does the right thing
vim.opt.expandtab = true -- converts tabs to white space
vim.opt.shiftwidth = 4   -- width for autoindents
vim.filetype.add({
    extension = {
        sls = "sls.yaml.jinja",
        jinja = 'jinja',
        jinja2 = 'jinja',
        j2 = 'jinja',
    },
})
vim.cmd [[
    colorscheme gruvbox
    autocmd BufRead,BufNewFile *{namespace,policy,middleware,configmap,role,deployment,cron,service,volume,secret,ingress,svc,pvc}*.yaml,*.tpl,*.gotmpl,helmfile*.yaml set ft=helm
]]