-- Map leader "Global Key" to space, so you can use it optionally like spacemacs etc.
vim.g.mapleader = " "
vim.g.maplocalleader = " "

-- Beautifully cursed, let's rebind C-x to the leader key and other respective emacs keybindings
vim.cmd("map <C-x> <Space>")
vim.cmd("map <C-g> <Esc>")
vim.cmd("imap <C-g> <Esc>")
vim.cmd("lmap <C-g> <Esc>")
vim.cmd("map <C-c> <Nop>")

-- Terminal Config
-- Exit terminal mode with Esc
-- vim.cmd("tnoremap <Esc> <C-\\><C-n>")
vim.cmd("tnoremap <C-g> <C-\\><C-n>")
-- Autostart in Insert mode
vim.cmd("startinsert")

-- Link system and neovim clipboard
vim.api.nvim_set_option("clipboard", "unnamedplus")

-- Lazy plugin manager
require("config.lazy")

-- Enable line numbers
vim.cmd("set number")
-- Turn off highlighting after search completion
vim.cmd("set nohlsearch")

-- Colourscheme
vim.o.background = "light" -- or "dark" for dark mode
vim.cmd("colorscheme gruvbox")

-- Telescope setup (Like emacs ivy-mode)
require('telescope').setup{
  defaults = {
    -- ...
  },
  pickers = {
    find_files = {
      theme = "ivy",
    }
  },
  extensions = {
    -- ...
  }
}

-- Custom statusline (modeline)
require('mini.statusline').setup()

-- Custom filetypes configuration
vim.api.nvim_create_autocmd({ 'BufEnter', 'BufNewFile' }, {
	pattern = '*ansible*.yml',
	command = 'set filetype=yaml.ansible',
})
vim.api.nvim_create_autocmd({ 'BufEnter', 'BufNewFile' }, {
	pattern = '*playbook*.yml',
	command = 'set filetype=yaml.ansible',
})
vim.api.nvim_create_autocmd({ 'BufEnter', 'BufNewFile' }, {
	pattern = '*server*.yml',
	command = 'set filetype=yaml.ansible',
})
vim.api.nvim_create_autocmd({ 'BufEnter', 'BufNewFile' }, {
	pattern = '*service*.yml',
	command = 'set filetype=yaml.ansible',
})
vim.api.nvim_create_autocmd({ 'BufEnter', 'BufNewFile' }, {
	pattern = '*compose*.yml',
	command = 'set filetype=yaml.docker-compose',
})


-- LSP Configuration
local lsp_zero = require('lsp-zero')
-- https://lsp-zero.netlify.app/v3.x/language-server-configuration.html#default-keybindings
lsp_zero.on_attach(function(client, bufnr)
  lsp_zero.default_keymaps({
	  buffer = bufnr,
	  preserve_mappings = false
  })
end)

local lspconfig = require('lspconfig')
lspconfig.lua_ls.setup({})
lspconfig.bashls.setup({})
lspconfig.clangd.setup({})
lspconfig.tsserver.setup({})
lspconfig.jedi_language_server.setup({})
lspconfig.nixd.setup({})
lspconfig.nginx_language_server.setup({})
lspconfig.docker_compose_language_service.setup({})
lspconfig.ansiblels.setup({})
-- lspconfig.yamlls.setup({
--   settings = {
--     yaml = {
--       schemas = {
--         ["https://json.schemastore.org/github-workflow.json"] = "/.github/workflows/*",
-- 	["https://raw.githubusercontent.com/ansible/ansible-lint/main/src/ansiblelint/schemas/ansible.json#/$defs/playbook"] = "**/*playbook*.yaml",
-- 	["https://raw.githubusercontent.com/ansible/ansible-lint/main/src/ansiblelint/schemas/inventory.json"] = "**/*hosts*.yaml",
--       },
--     },
--   }
-- })
lspconfig.emmet_language_server.setup({
  filetypes = { "css", "eruby", "html", "javascript", "javascriptreact", "less", "sass", "scss", "pug", "typescriptreact" },
  -- Read more about this options in the [vscode docs](https://code.visualstudio.com/docs/editor/emmet#_emmet-configuration).
  -- **Note:** only the options listed in the table are supported.
  init_options = {
    ---@type table<string, string>
    includeLanguages = {},
    --- @type string[]
    excludeLanguages = {},
    --- @type string[]
    extensionsPath = {},
    --- @type table<string, any> [Emmet Docs](https://docs.emmet.io/customization/preferences/)
    preferences = {},
    --- @type boolean Defaults to `true`
    showAbbreviationSuggestions = true,
    --- @type "always" | "never" Defaults to `"always"`
    showExpandedAbbreviation = "always",
    --- @type boolean Defaults to `false`
    showSuggestionsAsSnippets = false,
    --- @type table<string, any> [Emmet Docs](https://docs.emmet.io/customization/syntax-profiles/)
    syntaxProfiles = {},
    --- @type table<string, string> [Emmet Docs](https://docs.emmet.io/customization/snippets/#variables)
    variables = {},
  },
})
--Enable (broadcasting) snippet capability for completion
local capabilities = vim.lsp.protocol.make_client_capabilities()
capabilities.textDocument.completion.completionItem.snippetSupport = true
lspconfig.cssls.setup {
  capabilities = capabilities,
}
lspconfig.jsonls.setup {
  capabilities = capabilities,
}

local cmp = require('cmp')
cmp.setup({
  sources = {
    {name = 'nvim_lsp'},
  },
  mapping = {
    ['<Tab>'] = cmp.mapping.confirm({select = true}),
    ['<C-e>'] = cmp.mapping.abort(),
    ['<Up>'] = cmp.mapping.select_prev_item({behavior = 'select'}),
    ['<C-k>'] = cmp.mapping.select_prev_item({behavior = 'select'}),
    ['<Down>'] = cmp.mapping.select_next_item({behavior = 'select'}),
    ['<C-j>'] = cmp.mapping.select_next_item({behavior = 'select'}),
    ['<C-p>'] = cmp.mapping(function()
      if cmp.visible() then
        cmp.select_prev_item({behavior = 'insert'})
      else
        cmp.complete()
      end
    end),
    ['<C-n>'] = cmp.mapping(function()
      if cmp.visible() then
        cmp.select_next_item({behavior = 'insert'})
      else
        cmp.complete()
      end
    end),
  },
  snippet = {
    expand = function(args)
      require('luasnip').lsp_expand(args.body)
    end,
  },
})

-- DAP Configuration
local dap = require("dap")
local dapwidgets = require("dap.ui.widgets")
local dapwidgetscope = dapwidgets.sidebar(dapwidgets.scopes)
local daprunning = false

-- Functions to initialise Dap, open UI widgets and set helper keybindings
local function dapInit()
	dap.repl.open()
	dapwidgetscope.open()
	daprunning = true
	-- Can't get these working!
	-- vim.keymap.del({"n", "v", "o"}, "<C-s>")
	-- vim.keymap.set({"n", "v", "o"}, "<C-n>", "<C-c>ln")
	-- vim.keymap.set({"n", "v", "o"}, "<C-i>", "<C-c>ln")
	-- vim.keymap.set({"n", "v", "o"}, "<C-r>", "<C-c>ln")
	-- vim.keymap.set({"n", "v", "o"}, "<C-s>", "<C-c>ln")
	vim.cmd("unmap <C-s>")
	vim.cmd("map <C-n> <C-c>dn")
	vim.cmd("map <C-i> <C-c>di")
	vim.cmd("map <C-r> <C-c>dr")
	vim.cmd("map <C-s> <C-c>ds")
	print("Initialised debugger successfully")
end
local function dapCleanup()
	dap.repl.close()
	dapwidgetscope.close()
	daprunning = false
	vim.cmd("unmap <C-n>")
	vim.cmd("unmap <C-i>")
	vim.cmd("unmap <C-r>")
	vim.cmd("unmap <C-s>")
	vim.keymap.set({"n", "v", "o"}, '<C-s>', '<cmd>Telescope live_grep<cr>')
	-- vim.keymap.del({"n", "v", "o"}, "<C-n>")
	-- vim.keymap.del({"n", "v", "o"}, "<C-i>")
	-- vim.keymap.del({"n", "v", "o"}, "<C-r>")
	-- vim.keymap.del({"n", "v", "o"}, "<C-s>")
	-- vim.keymap.set({"n", "v", "o"}, '<C-s>', '<cmd>Telescope live_grep<cr>')
	print("Cleaned up debugger successfully")
end

-- DAP Server configurations
-- C DAP Configuration
dap.adapters.gdb = {
  type = "executable",
  command = "gdb",
  args = { "-i", "dap" }
}
dap.configurations.c = {
  {
    name = "Launch",
    type = "gdb",
    request = "launch",
    program = function()
      return vim.fn.input('Path to executable: ', vim.fn.getcwd() .. '/', 'file')
    end,
    cwd = "${workspaceFolder}",
    stopAtBeginningOfMainSubprogram = false,
  },
}

-- Discord Rich Presence
-- The setup config table shows all available config options with their default values:
-- require("neocord").setup({
--     -- General options
--     logo                = "auto",                     -- "auto" or url
--     logo_tooltip        = nil,                        -- nil or string
--     main_image          = "language",                 -- "language" or "logo"
--     client_id           = "1157438221865717891",      -- Use your own Discord application client id (not recommended)
--     log_level           = "debug",                    -- Log messages at or above this level (one of the following: "debug", "info", "warn", "error")
--     debounce_timeout    = 10,                         -- Number of seconds to debounce events (or calls to `:lua package.loaded.presence:update(<filename>, true)`)
--     blacklist           = {},                         -- A list of strings or Lua patterns that disable Rich Presence if the current file name, path, or workspace matches
--     file_assets         = {},                         -- Custom file asset definitions keyed by file names and extensions (see default config at `lua/presence/file_assets.lua` for reference)
--     show_time           = true,                       -- Show the timer
--     global_timer        = false,                      -- if set true, timer won't update when any event are triggered
-- 
--     -- Rich Presence text options
--     editing_text        = "Editing %s",               -- Format string rendered when an editable file is loaded in the buffer (either string or function(filename: string): string)
--     file_explorer_text  = "Browsing %s",              -- Format string rendered when browsing a file explorer (either string or function(file_explorer_name: string): string)
--     git_commit_text     = "Committing changes",       -- Format string rendered when committing changes in git (either string or function(filename: string): string)
--     plugin_manager_text = "Managing plugins",         -- Format string rendered when managing plugins (either string or function(plugin_manager_name: string): string)
--     reading_text        = "Reading %s",               -- Format string rendered when a read-only or unmodifiable file is loaded in the buffer (either string or function(filename: string): string)
--     workspace_text      = "Working on %s",            -- Format string rendered when in a git repository (either string or function(project_name: string|nil, filename: string): string)
--     line_number_text    = "Line %s out of %s",        -- Format string rendered when `enable_line_number` is set to true (either string or function(line_number: number, line_count: number): string)
--     terminal_text       = "Using Terminal",           -- Format string rendered when in terminal mode.
-- })


-- Remake of emacs which-key mode, I'll add all custom keybinds here
-- TODO: The DAP related functions should be moved into their own respective file/modularised better!
require("which-key").add ({
  { "<C-s>", "<cmd>Telescope live_grep<cr>" , desc = "Swiper", mode = "n" },

  -- This does not allow you to make a new file only search existing, but good enough for now.
  { "<leader><C-f>", "<cmd>Telescope find_files<cr>" , desc = "Find File", mode = "n" },

  -- To properly remake the Emacs ivy buffer command, we should figure out how to combine Telescope buffers and Telescope oldfiles
  -- This is good enough for now
  { "<leader>b", "<cmd>Telescope oldfiles<cr>" , desc = "Recently opened files", mode = "n" },
  { "<leader><C-b>", "<cmd>Telescope buffers<cr>" , desc = "Buffers", mode = "n" },

  { "<leader>k", "<cmd>bp|bd#<cr>" , desc = "Close current buffer", mode = "n" },
  { "<leader>0", "<cmd>close<cr>", desc = "Close focused window" },
  { "<leader>2", "<cmd>split<cr>", desc = "Split window horizontally" },
  { "<leader>3", "<cmd>vs<cr>", desc = "Split window vertically" },
  { "<leader>o", "<cmd>wincmd w<cr>", desc = "Switch to next window" },
  {
    -- Nested mappings are allowed and can be added in any order
    -- Most attributes can be inherited or overridden on any level
    -- There's no limit to the depth of nesting
    mode = { "n", "v" }, -- NORMAL and VISUAL mode
    { "<leader><C-c>", "<cmd>qa<cr>", desc = "Quit" },
    { "<leader><C-s>", "<cmd>w<cr>", desc = "Write" },
  },

  -- LSP/DAP Options
  {
    mode = { "n", "v" }, -- NORMAL and VISUAL mode
    { "<C-c>db", function() dap.toggle_breakpoint() end, desc = "Debugger: Toggle breakpoint" },
    { "<C-c>dd", function()
	if daprunning == false then
		if pcall(function() dap.continue() end) then
			dapInit()
		else
			print("Debugger failed to start!")
			daprunning = false
		end
    	else
		print("Debugger already running!")
    	end
    end, desc = "Debugger: Run" },
    { "<C-c>dD", function()
	if daprunning == false then
		if pcall(function() dap.run_last() end) then
			dapInit()
			print("Started debugger from previous configuration successfully")
		else
			print("Debugger failed to start!")
			daprunning = false
		end
    	else
		print("Debugger already running!")
    	end
    end, desc = "Debugger: Run last configuration again" },
    { "<C-c>ds", function()
	if daprunning == true then
		if pcall(function() dap.terminate() end) then
			dapCleanup()
			print("Stopped debugger successfully")
		else
			daprunning = true
		end
    	else
		print("Debugger is not running!")
    	end
    end, desc = "Debugger: Stop" },
    { "<C-c>dr", function()
	if daprunning == true then
		if not pcall(function() dap.continue() end) then
			dapCleanup()
	    	end
	else
		print("Debugger is not running! Please run debugger first")
	end
    end, desc = "Debugger: Resume execution" },
    { "<C-c>dn", function()
	if daprunning == true then
		if not pcall(function() dap.step_over() end) then
			dapCleanup()
	    	end
	else
		print("Debugger is not running! Please run debugger first")
	end
    end, desc = "Debugger: Step over" },
    { "<C-c>di", function()
	if daprunning == true then
		if not pcall(function() dap.step_into() end) then
			dapCleanup()
	    		print("Debugger failed to continue!")
	    	end
	else
		print("Debugger is not running! Please run debugger first")
	end
    end, desc = "Debugger: Step into" },
  }
})

-- See :help terminal-events, we can use this to implement cd commands etc changing the working directory of the nvim host and other terminal app to nvim host ipc.
-- sleep 5 && printf "\033]7;file://${PWD}/foo/bar\033\\"
vim.api.nvim_create_autocmd({ 'TermRequest' }, {
  desc = 'Handles OSC 7 dir change requests',
  callback = function(ev)
    	if string.sub(vim.v.termrequest, 1, 4) == '\x1b]7;' then
          local dir = string.gsub(vim.v.termrequest, '\x1b]7;file://[^/.]*', '')
          vim.cmd("cd " .. dir)
      end
  end
})