nvim-snappy/lua/plugins/workflow/projections.lua

-- projections.nvim
--- Lightweight workspace, project and session manager.

local startswith = function(text, prefix)
	return text:find(prefix, 1, true) == 1
end

local function store_session()
	local cwd = vim.loop.cwd()
	if cwd and require('projections.session').info(cwd) then
		require('projections.session').store(cwd)
	end
end

-- Plugin
return {
	'gnikdroy/projections.nvim',
	commit = '889914169fa1f5c00fb8659653b5a8330fb223e6',
	lazy = true,

	dependencies = {
		{
			'nyngwang/fzf-lua-projections.nvim',
			commit = '411672ab6f7c38d3a4a51916fda1a01c1618ae04',
		},
	},

	keys = {
		{
			'<leader>sp',
			function()
				require('fzf-lua-p').projects()
			end,
			'n',
		},
	},

	init = function()
		vim.opt.sessionoptions = 'blank,buffers,folds,globals,help,localoptions,resize,tabpages,terminal'

		--####################
		--# - Store Session on Close Vim
		--####################
		vim.api.nvim_create_autocmd({ 'VimLeavePre' }, {
			callback = store_session,
		})

		--####################
		--# - Store Session on Timer
		--####################
		vim.api.nvim_create_autocmd({ 'BufWritePre' }, {
			callback = store_session,
		})
		--local timer = vim.uv.new_timer()
		--timer:start(1000, 1000, vim.schedule_wrap(store_session))

		--####################
		--# - Restore Session on Open Vim
		--####################
		vim.api.nvim_create_autocmd({ 'VimEnter' }, {
			callback = function()
				local workspaces = require('projections.workspace').get_workspaces()

				local cwd = vim.loop.cwd()
				if not cwd then
					return
				end

				-- If Currently Within a Project, CD to that Project
				for _, ws in ipairs(workspaces) do
					for _, project in ipairs(ws:projects()) do
						local path_project = project:path().path
						if startswith(cwd, path_project) then
							vim.cmd('cd ' .. path_project)
						end
					end
				end
				if not cwd then
					return
				end

				-- If Path was Opened: Retrieve That Path
				local path_opened_file = nil
				if next(vim.fn.argv()) then
					path_opened_file = vim.fn.argv(0)
				end

				-- If CWD is a Project: Restore Project Session
				cwd = vim.loop.cwd()
				local session_info = require('projections.session').info(cwd)
				if session_info ~= nil then
					require('projections.session').restore(cwd)
				end

				-- If Originally Opened w/File, Open it Now
				--- This makes sure that, although we restored the session...
				--- ...the file requested to edit will still be opened for editing.
				if path_opened_file ~= nil then
					vim.cmd('e ' .. path_opened_file)
				end
				-- TODO: Perhaps we need to question the user a little more about what they want.
			end,
		})
	end,

	opts = {
		-- Default Workspaces
		--- Any folder with a '.git' within a workspace is a 'project'.
		workspaces = {
			-- General
			{ '~/src', { '.git' } },
			-- Specific
			--- Blender
			{ '~/src/blender', { '.git' } },
			--- College
			{ '~/src/college/bsc', { '.active_course' } },
			{ '~/src/college/msc', { '.active_course' } },
			--- Infrastructures
			{ '~/src/infras/clusters', { '.git' } },
			--- Photonics
			{ '~/src/photonics/books', { '.git' } },
			{ '~/src/photonics/packages', { '.git' } },
			--- Neovim
			{ '~/comps/neovim', { '.git' } },
			{ '~/.config', { 'nvim.version' } },
		},
	},
}