vim.pack.add({
	"https://github.com/lewis6991/gitsigns.nvim",
	"https://github.com/sindrets/diffview.nvim",
})

require("gitsigns").setup({
	signs = {
		add = { text = "┃" },
		change = { text = "┃" },
		delete = { text = "_" },
		topdelete = { text = "‾" },
		changedelete = { text = "~" },
		untracked = { text = "┆" },
	},
	signs_staged = {
		add = { text = "┃" },
		change = { text = "┃" },
		delete = { text = "_" },
		topdelete = { text = "‾" },
		changedelete = { text = "~" },
		untracked = { text = "┆" },
	},
	signs_staged_enable = true,
	signcolumn = true, -- Toggle with `:Gitsigns toggle_signs`
	numhl = false, -- Toggle with `:Gitsigns toggle_numhl`
	linehl = false, -- Toggle with `:Gitsigns toggle_linehl`
	word_diff = false, -- Toggle with `:Gitsigns toggle_word_diff`
	watch_gitdir = {
		follow_files = true,
	},
	auto_attach = true,
	attach_to_untracked = false,
	current_line_blame = false, -- Toggle with `:Gitsigns toggle_current_line_blame`
	current_line_blame_opts = {
		virt_text = true,
		virt_text_pos = "eol", -- 'eol' | 'overlay' | 'right_align'
		delay = 1000,
		ignore_whitespace = false,
		virt_text_priority = 100,
		use_focus = true,
	},
	current_line_blame_formatter = "<author>, <author_time:%R> - <summary>",
	sign_priority = 6,
	update_debounce = 100,
	status_formatter = nil, -- Use default
	max_file_length = 40000, -- Disable if file is longer than this (in lines)
	preview_config = {
		-- Options passed to nvim_open_win
		style = "minimal",
		relative = "cursor",
		row = 0,
		col = 1,
	},
	on_attach = function(bufnr)
		local gitsigns = require("gitsigns")

		local function map(mode, l, r, opts)
			opts = opts or {}
			opts.buffer = bufnr
			vim.keymap.set(mode, l, r, opts)
		end

		-- Navigation
		map("n", "]c", function()
			if vim.wo.diff then
				vim.cmd.normal({ "]c", bang = true })
			else
				gitsigns.nav_hunk("next")
			end
		end)

		map("n", "[c", function()
			if vim.wo.diff then
				vim.cmd.normal({ "[c", bang = true })
			else
				gitsigns.nav_hunk("prev")
			end
		end)

		-- Actions
		map("n", "<leader>hs", gitsigns.stage_hunk)
		map("n", "<leader>hr", gitsigns.reset_hunk)

		map("v", "<leader>hs", function()
			gitsigns.stage_hunk({ vim.fn.line("."), vim.fn.line("v") })
		end)

		map("v", "<leader>hr", function()
			gitsigns.reset_hunk({ vim.fn.line("."), vim.fn.line("v") })
		end)

		map("n", "<leader>hS", gitsigns.stage_buffer)
		map("n", "<leader>hR", gitsigns.reset_buffer)
		map("n", "<leader>hp", gitsigns.preview_hunk)
		map("n", "<leader>hi", gitsigns.preview_hunk_inline)

		map("n", "<leader>hb", function()
			gitsigns.blame_line({ full = true })
		end)

		map("n", "<leader>hd", gitsigns.diffthis)

		map("n", "<leader>hD", function()
			gitsigns.diffthis("~")
		end)

		map("n", "<leader>hQ", function()
			gitsigns.setqflist("all")
		end)
		map("n", "<leader>hq", gitsigns.setqflist)

		-- Toggles
		map("n", "<leader>tb", gitsigns.toggle_current_line_blame)
		map("n", "<leader>tw", gitsigns.toggle_word_diff)

		-- Text object
		map({ "o", "x" }, "ih", gitsigns.select_hunk)
	end,
})

-- Lua
local actions = require("diffview.actions")

require("diffview").setup({
	diff_binaries = false, -- Show diffs for binaries
	enhanced_diff_hl = false, -- See |diffview-config-enhanced_diff_hl|
	git_cmd = { "git" }, -- The git executable followed by default args.
	hg_cmd = { "hg" }, -- The hg executable followed by default args.
	use_icons = true, -- Requires nvim-web-devicons
	show_help_hints = true, -- Show hints for how to open the help panel
	watch_index = true, -- Update views and index buffers when the git index changes.
	icons = { -- Only applies when use_icons is true.
		folder_closed = "",
		folder_open = "",
	},
	signs = {
		fold_closed = "",
		fold_open = "",
		done = "✓",
	},
	view = {
		-- Configure the layout and behavior of different types of views.
		-- Available layouts:
		--  'diff1_plain'
		--    |'diff2_horizontal'
		--    |'diff2_vertical'
		--    |'diff3_horizontal'
		--    |'diff3_vertical'
		--    |'diff3_mixed'
		--    |'diff4_mixed'
		-- For more info, see |diffview-config-view.x.layout|.
		default = {
			-- Config for changed files, and staged files in diff views.
			layout = "diff2_horizontal",
			disable_diagnostics = false, -- Temporarily disable diagnostics for diff buffers while in the view.
			winbar_info = false, -- See |diffview-config-view.x.winbar_info|
		},
		merge_tool = {
			-- Config for conflicted files in diff views during a merge or rebase.
			layout = "diff3_horizontal",
			disable_diagnostics = true, -- Temporarily disable diagnostics for diff buffers while in the view.
			winbar_info = true, -- See |diffview-config-view.x.winbar_info|
		},
		file_history = {
			-- Config for changed files in file history views.
			layout = "diff2_horizontal",
			disable_diagnostics = false, -- Temporarily disable diagnostics for diff buffers while in the view.
			winbar_info = false, -- See |diffview-config-view.x.winbar_info|
		},
	},
	file_panel = {
		listing_style = "tree", -- One of 'list' or 'tree'
		tree_options = { -- Only applies when listing_style is 'tree'
			flatten_dirs = true, -- Flatten dirs that only contain one single dir
			folder_statuses = "only_folded", -- One of 'never', 'only_folded' or 'always'.
		},
		win_config = { -- See |diffview-config-win_config|
			position = "left",
			width = 35,
			win_opts = {},
		},
	},
	file_history_panel = {
		log_options = { -- See |diffview-config-log_options|
			git = {
				single_file = {
					diff_merges = "combined",
				},
				multi_file = {
					diff_merges = "first-parent",
				},
			},
			hg = {
				single_file = {},
				multi_file = {},
			},
		},
		win_config = { -- See |diffview-config-win_config|
			position = "bottom",
			height = 16,
			win_opts = {},
		},
	},
	commit_log_panel = {
		win_config = {}, -- See |diffview-config-win_config|
	},
	default_args = { -- Default args prepended to the arg-list for the listed commands
		DiffviewOpen = {},
		DiffviewFileHistory = {},
	},
	hooks = {}, -- See |diffview-config-hooks|
	keymaps = {
		disable_defaults = false, -- Disable the default keymaps
		view = {
			-- The `view` bindings are active in the diff buffers, only when the current
			-- tabpage is a Diffview.
			{
				"n",
				"<tab>",
				actions.select_next_entry,
				{ desc = "Open the diff for the next file" },
			},
			{
				"n",
				"<s-tab>",
				actions.select_prev_entry,
				{ desc = "Open the diff for the previous file" },
			},
			{
				"n",
				"[F",
				actions.select_first_entry,
				{ desc = "Open the diff for the first file" },
			},
			{
				"n",
				"]F",
				actions.select_last_entry,
				{ desc = "Open the diff for the last file" },
			},
			{
				"n",
				"gf",
				actions.goto_file_edit,
				{ desc = "Open the file in the previous tabpage" },
			},
			{ "n", "<C-w><C-f>", actions.goto_file_split, { desc = "Open the file in a new split" } },
			{ "n", "<C-w>gf", actions.goto_file_tab, { desc = "Open the file in a new tabpage" } },
			{ "n", "<leader>e", actions.focus_files, { desc = "Bring focus to the file panel" } },
			{ "n", "<leader>b", actions.toggle_files, { desc = "Toggle the file panel." } },
			{
				"n",
				"g<C-x>",
				actions.cycle_layout,
				{ desc = "Cycle through available layouts." },
			},
			{
				"n",
				"[x",
				actions.prev_conflict,
				{ desc = "In the merge-tool: jump to the previous conflict" },
			},
			{
				"n",
				"]x",
				actions.next_conflict,
				{ desc = "In the merge-tool: jump to the next conflict" },
			},
			{
				"n",
				"<leader>co",
				actions.conflict_choose("ours"),
				{ desc = "Choose the OURS version of a conflict" },
			},
			{
				"n",
				"<leader>ct",
				actions.conflict_choose("theirs"),
				{ desc = "Choose the THEIRS version of a conflict" },
			},
			{
				"n",
				"<leader>cb",
				actions.conflict_choose("base"),
				{ desc = "Choose the BASE version of a conflict" },
			},
			{
				"n",
				"<leader>ca",
				actions.conflict_choose("all"),
				{ desc = "Choose all the versions of a conflict" },
			},
			{ "n", "dx", actions.conflict_choose("none"), { desc = "Delete the conflict region" } },
			{
				"n",
				"<leader>cO",
				actions.conflict_choose_all("ours"),
				{ desc = "Choose the OURS version of a conflict for the whole file" },
			},
			{
				"n",
				"<leader>cT",
				actions.conflict_choose_all("theirs"),
				{ desc = "Choose the THEIRS version of a conflict for the whole file" },
			},
			{
				"n",
				"<leader>cB",
				actions.conflict_choose_all("base"),
				{ desc = "Choose the BASE version of a conflict for the whole file" },
			},
			{
				"n",
				"<leader>cA",
				actions.conflict_choose_all("all"),
				{ desc = "Choose all the versions of a conflict for the whole file" },
			},
			{
				"n",
				"dX",
				actions.conflict_choose_all("none"),
				{ desc = "Delete the conflict region for the whole file" },
			},
		},
		diff1 = {
			-- Mappings in single window diff layouts
			{ "n", "g?", actions.help({ "view", "diff1" }), { desc = "Open the help panel" } },
		},
		diff2 = {
			-- Mappings in 2-way diff layouts
			{ "n", "g?", actions.help({ "view", "diff2" }), { desc = "Open the help panel" } },
		},
		diff3 = {
			-- Mappings in 3-way diff layouts
			{
				{ "n", "x" },
				"2do",
				actions.diffget("ours"),
				{ desc = "Obtain the diff hunk from the OURS version of the file" },
			},
			{
				{ "n", "x" },
				"3do",
				actions.diffget("theirs"),
				{ desc = "Obtain the diff hunk from the THEIRS version of the file" },
			},
			{ "n", "g?", actions.help({ "view", "diff3" }), { desc = "Open the help panel" } },
		},
		diff4 = {
			-- Mappings in 4-way diff layouts
			{
				{ "n", "x" },
				"1do",
				actions.diffget("base"),
				{ desc = "Obtain the diff hunk from the BASE version of the file" },
			},
			{
				{ "n", "x" },
				"2do",
				actions.diffget("ours"),
				{ desc = "Obtain the diff hunk from the OURS version of the file" },
			},
			{
				{ "n", "x" },
				"3do",
				actions.diffget("theirs"),
				{ desc = "Obtain the diff hunk from the THEIRS version of the file" },
			},
			{ "n", "g?", actions.help({ "view", "diff4" }), { desc = "Open the help panel" } },
		},
		file_panel = {
			{
				"n",
				"j",
				actions.next_entry,
				{ desc = "Bring the cursor to the next file entry" },
			},
			{
				"n",
				"<down>",
				actions.next_entry,
				{ desc = "Bring the cursor to the next file entry" },
			},
			{
				"n",
				"k",
				actions.prev_entry,
				{ desc = "Bring the cursor to the previous file entry" },
			},
			{
				"n",
				"<up>",
				actions.prev_entry,
				{ desc = "Bring the cursor to the previous file entry" },
			},
			{
				"n",
				"<cr>",
				actions.select_entry,
				{ desc = "Open the diff for the selected entry" },
			},
			{
				"n",
				"o",
				actions.select_entry,
				{ desc = "Open the diff for the selected entry" },
			},
			{
				"n",
				"l",
				actions.select_entry,
				{ desc = "Open the diff for the selected entry" },
			},
			{
				"n",
				"<2-LeftMouse>",
				actions.select_entry,
				{ desc = "Open the diff for the selected entry" },
			},
			{
				"n",
				"-",
				actions.toggle_stage_entry,
				{ desc = "Stage / unstage the selected entry" },
			},
			{
				"n",
				"s",
				actions.toggle_stage_entry,
				{ desc = "Stage / unstage the selected entry" },
			},
			{ "n", "S", actions.stage_all, { desc = "Stage all entries" } },
			{ "n", "U", actions.unstage_all, { desc = "Unstage all entries" } },
			{
				"n",
				"X",
				actions.restore_entry,
				{ desc = "Restore entry to the state on the left side" },
			},
			{ "n", "L", actions.open_commit_log, { desc = "Open the commit log panel" } },
			{ "n", "zo", actions.open_fold, { desc = "Expand fold" } },
			{ "n", "h", actions.close_fold, { desc = "Collapse fold" } },
			{ "n", "zc", actions.close_fold, { desc = "Collapse fold" } },
			{ "n", "za", actions.toggle_fold, { desc = "Toggle fold" } },
			{ "n", "zR", actions.open_all_folds, { desc = "Expand all folds" } },
			{ "n", "zM", actions.close_all_folds, { desc = "Collapse all folds" } },
			{ "n", "<c-b>", actions.scroll_view(-0.25), { desc = "Scroll the view up" } },
			{ "n", "<c-f>", actions.scroll_view(0.25), { desc = "Scroll the view down" } },
			{
				"n",
				"<tab>",
				actions.select_next_entry,
				{ desc = "Open the diff for the next file" },
			},
			{
				"n",
				"<s-tab>",
				actions.select_prev_entry,
				{ desc = "Open the diff for the previous file" },
			},
			{
				"n",
				"[F",
				actions.select_first_entry,
				{ desc = "Open the diff for the first file" },
			},
			{
				"n",
				"]F",
				actions.select_last_entry,
				{ desc = "Open the diff for the last file" },
			},
			{
				"n",
				"gf",
				actions.goto_file_edit,
				{ desc = "Open the file in the previous tabpage" },
			},
			{
				"n",
				"<C-w><C-f>",
				actions.goto_file_split,
				{ desc = "Open the file in a new split" },
			},
			{
				"n",
				"<C-w>gf",
				actions.goto_file_tab,
				{ desc = "Open the file in a new tabpage" },
			},
			{
				"n",
				"i",
				actions.listing_style,
				{ desc = "Toggle between 'list' and 'tree' views" },
			},
			{
				"n",
				"f",
				actions.toggle_flatten_dirs,
				{ desc = "Flatten empty subdirectories in tree listing style" },
			},
			{
				"n",
				"R",
				actions.refresh_files,
				{ desc = "Update stats and entries in the file list" },
			},
			{
				"n",
				"<leader>e",
				actions.focus_files,
				{ desc = "Bring focus to the file panel" },
			},
			{ "n", "<leader>b", actions.toggle_files, { desc = "Toggle the file panel" } },
			{ "n", "g<C-x>", actions.cycle_layout, { desc = "Cycle available layouts" } },
			{ "n", "[x", actions.prev_conflict, { desc = "Go to the previous conflict" } },
			{ "n", "]x", actions.next_conflict, { desc = "Go to the next conflict" } },
			{ "n", "g?", actions.help("file_panel"), { desc = "Open the help panel" } },
			{
				"n",
				"<leader>cO",
				actions.conflict_choose_all("ours"),
				{ desc = "Choose the OURS version of a conflict for the whole file" },
			},
			{
				"n",
				"<leader>cT",
				actions.conflict_choose_all("theirs"),
				{ desc = "Choose the THEIRS version of a conflict for the whole file" },
			},
			{
				"n",
				"<leader>cB",
				actions.conflict_choose_all("base"),
				{ desc = "Choose the BASE version of a conflict for the whole file" },
			},
			{
				"n",
				"<leader>cA",
				actions.conflict_choose_all("all"),
				{ desc = "Choose all the versions of a conflict for the whole file" },
			},
			{
				"n",
				"dX",
				actions.conflict_choose_all("none"),
				{ desc = "Delete the conflict region for the whole file" },
			},
		},
		file_history_panel = {
			{ "n", "g!", actions.options, { desc = "Open the option panel" } },
			{
				"n",
				"<C-A-d>",
				actions.open_in_diffview,
				{ desc = "Open the entry under the cursor in a diffview" },
			},
			{
				"n",
				"y",
				actions.copy_hash,
				{ desc = "Copy the commit hash of the entry under the cursor" },
			},
			{ "n", "L", actions.open_commit_log, { desc = "Show commit details" } },
			{
				"n",
				"X",
				actions.restore_entry,
				{ desc = "Restore file to the state from the selected entry" },
			},
			{ "n", "zo", actions.open_fold, { desc = "Expand fold" } },
			{ "n", "zc", actions.close_fold, { desc = "Collapse fold" } },
			{ "n", "h", actions.close_fold, { desc = "Collapse fold" } },
			{ "n", "za", actions.toggle_fold, { desc = "Toggle fold" } },
			{ "n", "zR", actions.open_all_folds, { desc = "Expand all folds" } },
			{ "n", "zM", actions.close_all_folds, { desc = "Collapse all folds" } },
			{
				"n",
				"j",
				actions.next_entry,
				{ desc = "Bring the cursor to the next file entry" },
			},
			{
				"n",
				"<down>",
				actions.next_entry,
				{ desc = "Bring the cursor to the next file entry" },
			},
			{
				"n",
				"k",
				actions.prev_entry,
				{ desc = "Bring the cursor to the previous file entry" },
			},
			{
				"n",
				"<up>",
				actions.prev_entry,
				{ desc = "Bring the cursor to the previous file entry" },
			},
			{
				"n",
				"<cr>",
				actions.select_entry,
				{ desc = "Open the diff for the selected entry" },
			},
			{
				"n",
				"o",
				actions.select_entry,
				{ desc = "Open the diff for the selected entry" },
			},
			{
				"n",
				"l",
				actions.select_entry,
				{ desc = "Open the diff for the selected entry" },
			},
			{
				"n",
				"<2-LeftMouse>",
				actions.select_entry,
				{ desc = "Open the diff for the selected entry" },
			},
			{ "n", "<c-b>", actions.scroll_view(-0.25), { desc = "Scroll the view up" } },
			{ "n", "<c-f>", actions.scroll_view(0.25), { desc = "Scroll the view down" } },
			{ "n", "<tab>", actions.select_next_entry, { desc = "Open the diff for the next file" } },
			{
				"n",
				"<s-tab>",
				actions.select_prev_entry,
				{ desc = "Open the diff for the previous file" },
			},
			{
				"n",
				"[F",
				actions.select_first_entry,
				{ desc = "Open the diff for the first file" },
			},
			{ "n", "]F", actions.select_last_entry, { desc = "Open the diff for the last file" } },
			{
				"n",
				"gf",
				actions.goto_file_edit,
				{ desc = "Open the file in the previous tabpage" },
			},
			{ "n", "<C-w><C-f>", actions.goto_file_split, { desc = "Open the file in a new split" } },
			{ "n", "<C-w>gf", actions.goto_file_tab, { desc = "Open the file in a new tabpage" } },
			{ "n", "<leader>e", actions.focus_files, { desc = "Bring focus to the file panel" } },
			{ "n", "<leader>b", actions.toggle_files, { desc = "Toggle the file panel" } },
			{ "n", "g<C-x>", actions.cycle_layout, { desc = "Cycle available layouts" } },
			{ "n", "g?", actions.help("file_history_panel"), { desc = "Open the help panel" } },
		},
		option_panel = {
			{ "n", "<tab>", actions.select_entry, { desc = "Change the current option" } },
			{ "n", "q", actions.close, { desc = "Close the panel" } },
			{ "n", "g?", actions.help("option_panel"), { desc = "Open the help panel" } },
		},
		help_panel = {
			{ "n", "q", actions.close, { desc = "Close help menu" } },
			{ "n", "<esc>", actions.close, { desc = "Close help menu" } },
		},
	},
})