nvim/lua/config/commands.lua

local pickers = require "telescope.pickers"
local finders = require "telescope.finders"
local conf = require("telescope.config").values
local actions = require "telescope.actions"
local action_state = require "telescope.actions.state"

vim.api.nvim_create_user_command("OP", function ()
    local folders = vim.fn.systemlist("\\ls -d $HOME/projects/*/")
    for i, folder in ipairs(folders) do
        folders[i] = string.match(string.match(folder, "[^/]*/$"), "^[^/]*")
    end
    pickers.new({}, {
        prompt_title = "Open project",
        finder = finders.new_table {
            results = folders
        },
        sorter = conf.generic_sorter({}),
        attach_mappings = function (prompt_bufnr, map)
            actions.select_default:replace(function ()
                actions.close(prompt_bufnr)
                local selection = action_state.get_selected_entry()
                selection = selection[1]
                vim.cmd("cd $HOME/projects/" .. selection)
            end)
            return true
        end
    }):find()
end, {})

vim.api.nvim_create_user_command("OCC", function ()
    local folders = vim.fn.systemlist("\\ls -d $HOME/projects/cc/*/")
    for i, folder in ipairs(folders) do
        folders[i] = string.match(string.match(folder, "[^/]*/$"), "^[^/]*")
    end
    pickers.new({}, {
        prompt_title = "Open project",
        finder = finders.new_table {
            results = folders
        },
        sorter = conf.generic_sorter({}),
        attach_mappings = function (prompt_bufnr, map)
            actions.select_default:replace(function ()
                actions.close(prompt_bufnr)
                local selection = action_state.get_selected_entry()
                selection = selection[1]
                vim.cmd("cd $HOME/projects/cc/" .. selection)
            end)
            return true
        end
    }):find()
end, {})

vim.api.nvim_create_user_command("OD", function ()
    local folders = vim.fn.systemlist("\\ls -d */")
    for i, folder in ipairs(folders) do
        folders[i] = string.match(string.match(folder, "[^/]*/$"), "^[^/]*")
    end
    pickers.new({}, {
        prompt_title = "Open directory",
        finder = finders.new_table {
            results = folders
        },
        sorter = conf.generic_sorter({}),
        attach_mappings = function (prompt_bufnr, map)
            actions.select_default:replace(function ()
                actions.close(prompt_bufnr)
                local selection = action_state.get_selected_entry()
                selection = selection[1]
                vim.cmd("cd " .. selection)
            end)
            return true
        end
    }):find()
end, {})

vim.api.nvim_create_user_command("Config", function ()
    vim.cmd("cd $HOME/.config/nvim")
end, {})

vim.api.nvim_create_user_command("RetabFile", function ()
    vim.cmd(":set ts=2 sts=2 noet | retab! | set ts=4 sts=4 et | retab!")
end, {})

local function get_makefile_targets()
    local makefile = "./Makefile"
    local targets = {}

    local file = io.open(makefile, "r")
    if file then
        for line in file:lines() do
            local target = line:match("^[^\\s:]+:.*")
            if target then
                local tg = target:match("^[^:]+")
                table.insert(targets, tg)
            end
        end
        file:close()
    end
    return targets
end

vim.api.nvim_create_user_command("Make", function (args)
    local vimCmd = "TermExec cmd=\"make"
    if (args["args"]) then
        vimCmd = vimCmd .. " " .. args["args"]
    end
    vimCmd = vimCmd .. "\""
    vim.cmd(vimCmd)
end, {nargs = "*", ["complete"] = function()
    return get_makefile_targets()
end})

vim.api.nvim_create_user_command("Maket", function()
    local targets = get_makefile_targets()
    pickers.new({}, {
        prompt_title = "Run make target",
        finder = finders.new_table {
            results = targets
        },
        sorter = conf.generic_sorter({}),
        attach_mappings = function (prompt_bufnr, map)
            actions.select_default:replace(function ()
                actions.close(prompt_bufnr)
                local selection = action_state.get_selected_entry()
                selection = selection[1]
                vim.cmd(":Make " .. selection)
            end)
            return true
        end
    }):find()
end, {})