vim.cmd("set expandtab")
vim.cmd("set tabstop=4")
vim.cmd("set softtabstop=4")
vim.cmd("set shiftwidth=4")
vim.cmd("set splitright")
vim.cmd("set splitbelow")
vim.cmd("set selectmode=key")
vim.cmd("set keymodel=startsel")
vim.cmd("set number")
vim.cmd("set cursorline")
vim.cmd("set termguicolors")
vim.cmd("set clipboard+=unnamedplus")
vim.g.mapleader = " "

local lazypath = vim.fn.stdpath("data") .. "/lazy/lazy.nvim"
if not vim.loop.fs_stat(lazypath) then
  vim.fn.system({
    "git",
    "clone",
    "--filter=blob:none",
    "https://github.com/folke/lazy.nvim.git",
    "--branch=stable", -- latest stable release
    lazypath,
  })
end
vim.opt.rtp:prepend(lazypath)

local plugins = {
    {"loctvl842/monokai-pro.nvim", name="monokai", priority=1000},
    {
        'nvim-telescope/telescope.nvim', tag = '0.1.5',
        dependencies = { 'nvim-lua/plenary.nvim' }
    },
    {"nvim-treesitter/nvim-treesitter", build = ":TSUpdate"},
    {
    	"nvim-neo-tree/neo-tree.nvim",
    	branch = "v3.x",
    	dependencies = {
      	    "nvim-lua/plenary.nvim",
            "nvim-tree/nvim-web-devicons", -- not strictly required, but recommended
            "MunifTanjim/nui.nvim",
            "3rd/image.nvim"
        }
    },
    {
        'neovim/nvim-lspconfig',
        dependencies = {
            -- Automatically install LSPs to stdpath for neovim
            {'williamboman/mason.nvim', config = true},
            'williamboman/mason-lspconfig.nvim',
            -- Useful status updates for LSP
            -- NOTE: `opts = {}` is the same as calling `require('fidget').setup({})`
            { 'j-hui/fidget.nvim', tag = 'legacy', opts = {} },
            -- Additional lua configuration, makes nvim stuff amazing!
            'folke/neodev.nvim',
        },
    },
    {
        "hrsh7th/nvim-cmp",
        dependencies = {
            "hrsh7th/cmp-nvim-lsp",
            "hrsh7th/cmp-buffer",
            "hrsh7th/cmp-path",
            "hrsh7th/cmp-cmdline",
            "L3MON4D3/LuaSnip",
            "saadparwaiz1/cmp_luasnip",
            "hrsh7th/cmp-emoji",
        },
    },
    {
        'romgrk/barbar.nvim',
        dependencies = {
            'lewis6991/gitsigns.nvim', -- OPTIONAL: for git status
            'nvim-tree/nvim-web-devicons', -- OPTIONAL: for file icons
        },
        init = function() vim.g.barbar_auto_setup = false end,
        opts = {
        -- lazy.nvim will automatically call setup for you. put your options here, anything missing will use the default:
        -- animation = true,
        -- insert_at_start = true,
        -- …etc.
        },
        version = '^1.0.0', -- optional: only update when a new 1.x version is released
    },
    { 'lvimuser/lsp-inlayhints.nvim' },
    {
        "ray-x/lsp_signature.nvim",
        event = "VeryLazy",
        opts = {},
        config = function(_, opts) require'lsp_signature'.setup(opts) end
    },
    {
        "folke/which-key.nvim",
        event = "VeryLazy",
        init = function()
            vim.o.timeout = true
            vim.o.timeoutlen = 300
        end,
        opts = {
            -- your configuration comes here
            -- or leave it empty to use the default settings
            -- refer to the configuration section below
        }
    },
    { 'jdhao/better-escape.vim' },
    { 
        'Pocco81/auto-save.nvim',
        opts = {
            enabled = true,
        }
    },
    {
        'stevearc/overseer.nvim',
        opts = {},
    },
    {
        "windwp/nvim-autopairs",
        event = "InsertEnter",
        opts = {}
    },
    {
        "dhruvasagar/vim-prosession",
        dependencies = {
            "tpope/vim-obsession",
        },
    },
    {
    	"arsham/arshamiser.nvim",
	    dependencies = {
		    "arsham/arshlib.nvim",
		    "famiu/feline.nvim",
		    "rebelot/heirline.nvim",
		    "kyazdani42/nvim-web-devicons",
	    },
	    config = function()
		    -- ignore any parts you don't want to use
		    vim.cmd.colorscheme("arshamiser_light")
		    require("arshamiser.feliniser")
		    -- or:
		    -- require("arshamiser.heirliniser")

		    _G.custom_foldtext = require("arshamiser.folding").foldtext
		    vim.opt.foldtext = "v:lua.custom_foldtext()"
		    -- if you want to draw a tabline:
		    vim.api.nvim_set_option("tabline", [[%{%v:lua.require("arshamiser.tabline").draw()%}]])
	    end,
    }
}
local opts = {
}

require("lazy").setup(plugins, opts)

require("monokai-pro").setup({
  transparent_background = true,
  terminal_colors = true,
  devicons = true, -- highlight the icons of `nvim-web-devicons`
  styles = {
    comment = { italic = true },
    keyword = { italic = true }, -- any other keyword
    type = { italic = true }, -- (preferred) int, long, char, etc
    storageclass = { italic = true }, -- static, register, volatile, etc
    structure = { italic = true }, -- struct, union, enum, etc
    parameter = { italic = true }, -- parameter pass in function
    annotation = { italic = true },
    tag_attribute = { italic = true }, -- attribute of tag in reactjs
  },
  filter = "spectrum", -- classic | octagon | pro | machine | ristretto | spectrum
  -- Enable this will disable filter option
  day_night = {
    enable = false, -- turn off by default
    day_filter = "pro", -- classic | octagon | pro | machine | ristretto | spectrum
    night_filter = "spectrum", -- classic | octagon | pro | machine | ristretto | spectrum
  },
  inc_search = "background", -- underline | background
  background_clear = {
    -- "float_win",
    "toggleterm",
    -- "telescope",
    -- "which-key",
    "renamer",
    "notify",
    -- "nvim-tree",
    -- "neo-tree",
    -- "bufferline", -- better used if background of `neo-tree` or `nvim-tree` is cleared
  },-- "float_win", "toggleterm", "telescope", "which-key", "renamer", "neo-tree", "nvim-tree", "bufferline"
  plugins = {
    bufferline = {
      underline_selected = false,
      underline_visible = false,
    },
    indent_blankline = {
      context_highlight = "default", -- default | pro
      context_start_underline = false,
    },
  },
})

vim.cmd([[colorscheme monokai-pro]])

local builtin = require("telescope.builtin")
vim.keymap.set('n', '<C-p>', builtin.find_files, {})
vim.keymap.set('n', '<leader>g', builtin.live_grep, {})

local config = require("nvim-treesitter.configs")
config.setup({
    ensure_installed = {"lua", "cpp", "rust", "javascript", "python"},
    auto_install = true,
    highlight = { enable = true},
    indent = { enable = true},
})
vim.keymap.set('n', '<leader>f', ':Neotree . toggle left<CR>', {})

-- import nvim-cmp plugin safely
local cmp_status, cmp = pcall(require, "cmp")
if not cmp_status then
  return
end

-- import luasnip plugin safely
local luasnip_status, luasnip = pcall(require, "luasnip")
if not luasnip_status then
  return
end

vim.opt.completeopt = "menu,menuone,noselect"

cmp.setup({
  snippet = {
    expand = function(args)
      luasnip.lsp_expand(args.body)
    end,
  },
  mapping = cmp.mapping.preset.insert({
    ["<C-k>"] = cmp.mapping.select_prev_item(), -- previous suggestion
    ["<C-j>"] = cmp.mapping.select_next_item(), -- next suggestion
    ["<C-b>"] = cmp.mapping.scroll_docs(-4),
    ["<C-f>"] = cmp.mapping.scroll_docs(4),
    ["<C-Space>"] = cmp.mapping.complete(), -- show completion suggestions
    ["<C-e>"] = cmp.mapping.abort(), -- close completion window
    ["<tab>"] = cmp.mapping.confirm({ select = true }),
  }),
  -- sources for autocompletion
  sources = cmp.config.sources({
    { name = "nvim_lsp" }, -- LSP
    { name = "luasnip" }, -- snippets
    { name = "buffer" }, -- text within the current buffer
    { name = "path" }, -- file system paths
  }),
})


-- Setup language servers.
local lspconfig = require('lspconfig')
lspconfig.clangd.setup {
    cmd = {
        "clangd",
        "--header-insertion=never"
    }
}
lspconfig.pyright.setup {}
lspconfig.tsserver.setup {}
lspconfig.rust_analyzer.setup {
  -- Server-specific settings. See `:help lspconfig-setup`
  settings = {
    ['rust-analyzer'] = {},
  },
}


-- Global mappings.
-- See `:help vim.diagnostic.*` for documentation on any of the below functions
vim.keymap.set('n', '<space>e', vim.diagnostic.open_float)
vim.keymap.set('n', '[d', vim.diagnostic.goto_prev)
vim.keymap.set('n', ']d', vim.diagnostic.goto_next)
vim.keymap.set('n', '<space>q', vim.diagnostic.setloclist)

-- Use LspAttach autocommand to only map the following keys
-- after the language server attaches to the current buffer
vim.api.nvim_create_autocmd('LspAttach', {
  group = vim.api.nvim_create_augroup('UserLspConfig', {}),
  callback = function(ev)
    -- Enable completion triggered by <c-x><c-o>
    vim.bo[ev.buf].omnifunc = 'v:lua.vim.lsp.omnifunc'

    -- Buffer local mappings.
    -- See `:help vim.lsp.*` for documentation on any of the below functions
    local opts = { buffer = ev.buf }
    vim.keymap.set('n', 'gD', vim.lsp.buf.declaration, opts)
    vim.keymap.set('n', 'gd', vim.lsp.buf.definition, opts)
    vim.keymap.set('n', 'K', vim.lsp.buf.hover, opts)
    vim.keymap.set('n', 'gi', vim.lsp.buf.implementation, opts)
    vim.keymap.set('n', '<C-k>', vim.lsp.buf.signature_help, opts)
    vim.keymap.set('n', '<space>wa', vim.lsp.buf.add_workspace_folder, opts)
    vim.keymap.set('n', '<space>wr', vim.lsp.buf.remove_workspace_folder, opts)
    vim.keymap.set('n', '<space>wl', function()
      print(vim.inspect(vim.lsp.buf.list_workspace_folders()))
    end, opts)
    vim.keymap.set('n', '<space>D', vim.lsp.buf.type_definition, opts)
    vim.keymap.set('n', '<space>rn', vim.lsp.buf.rename, opts)
    vim.keymap.set({ 'n', 'v' }, '<space>ca', vim.lsp.buf.code_action, opts)
    vim.keymap.set('n', 'gr', vim.lsp.buf.references, opts)
  end,
})

require("lsp-inlayhints").setup()

require("lsp_signature").setup({})

vim.keymap.set('n', '<C-z>', ':u<CR>')
vim.keymap.set('i', '<C-z>', '<ESC>:u<CR>i')
vim.keymap.set('i', '<C-c>', '<ESC>yyi')
vim.keymap.set('i', '<C-v>', '<ESC>PA')
vim.keymap.set('i', '<C-x>', '<ESC>ddi')
vim.keymap.set('i', '<C-a>', '<ESC>ggVG')
vim.keymap.set('n', '<leader>`', ':split<CR>:terminal<CR>i')
vim.keymap.set('n', '<leader>l', ':vsplit std.in<CR>:split std.out<CR>')
vim.keymap.set('n', '<leader>n', ':tabnew')

require("overseer").setup({
  templates = { "builtin", "user.cpp_cp" },
})

vim.api.nvim_create_autocmd("FileType", {
    pattern = "cpp",
    callback = function()
        vim.api.nvim_buf_set_keymap(0, 'n', "<leader>b", ":vsplit<CR>:te g++ -std=c++17 -Wall -Ofast -fsanitize=address % && ./a.out < std.in > std.out<CR>i", {
            silent = true,
            noremap = true
        })
    end,
})