dotfiles/.config/nvim/lua/plugins/telescope.lua

return {
    "nvim-telescope/telescope.nvim",
    dependencies = {
        "nvim-lua/plenary.nvim",
        { "nvim-telescope/telescope-fzf-native.nvim", build = "make" },
        "nvim-tree/nvim-web-devicons",
        "debugloop/telescope-undo.nvim",
        "nvim-telescope/telescope-ui-select.nvim",
    },
    config = function()
        local telescope = require("telescope")
        local actions = require("telescope.actions")
        local previewers = require("telescope.previewers")
        local previewers_utils = require("telescope.previewers.utils")
        local sorters = require("telescope.sorters")
        local builtin = require("telescope.builtin")

        local max_size = 100000
        local truncate_large_files = function(filepath, bufnr, opts)
            opts = opts or {}

            filepath = vim.fn.expand(filepath)
            ---@diagnostic disable-next-line: undefined-field
            vim.loop.fs_stat(filepath, function(_, stat)
                if not stat then
                    return
                end
                if stat.size > max_size then
                    local cmd = { "head", "-c", max_size, filepath }
                    previewers_utils.job_maker(cmd, bufnr, opts)
                else
                    previewers.buffer_previewer_maker(filepath, bufnr, opts)
                end
            end)
        end

        telescope.setup({
            defaults = vim.tbl_extend(
                "force",
                require("telescope.themes").get_ivy(),
                {
                    file_sorter = sorters.get_fzy_sorter,
                    color_devicons = true,
                    buffer_previewer_maker = truncate_large_files,

                    initial_mode = "insert",
                    selection_strategy = "reset",
                    sorting_strategy = "ascending",
                    path_display = { "truncate" },

                    mappings = {
                        i = {
                            ["<C-n>"] = actions.move_selection_next,
                            ["<C-p>"] = actions.move_selection_previous,
                            ["<C-j>"] = actions.cycle_history_next,
                            ["<C-k>"] = actions.cycle_history_prev,
                            ["<C-q>"] = actions.smart_send_to_qflist + actions.open_qflist,
                        },
                    },
                }
            ),
            pickers = {
                diagnostics = {
                    initial_mode = "normal",
                    layout_config = {
                        preview_cutoff = 9999,
                    },
                },
            },
            themes = {
                ivy = {
                    layout_strategy = 'bottom_pane',
                    layout_config = {
                        height = 50,
                    },
                },
            },
            extensions = {
                undo = {
                    side_by_side = true,
                    mappings = {
                        i = {
                            ["<CR>"] = require("telescope-undo.actions").restore,
                        },
                        n = {
                            ["<CR>"] = require("telescope-undo.actions").restore,
                            ["y"] = require("telescope-undo.actions").yank_additions,
                            ["Y"] = require("telescope-undo.actions").yank_deletions,
                            ["u"] = require("telescope-undo.actions").restore,
                        },
                    },
                },
            },
        })

        telescope.load_extension("fzf")
        telescope.load_extension("undo")
        telescope.load_extension("ui-select")

        -- We cache the results of "git rev-parse"
        -- Process creation is expensive in Windows, so this reduces latency
        local is_inside_work_tree = {}

        local project_files = function()
            local cwd = vim.fn.getcwd()
            if is_inside_work_tree[cwd] == nil then
                vim.fn.system("git rev-parse --is-inside-work-tree")
                is_inside_work_tree[cwd] = vim.v.shell_error == 0
            end

            if is_inside_work_tree[cwd] then
                builtin.git_files({ show_untracked = true, hidden = true })
            else
                builtin.find_files({})
            end
        end

        -- set keymaps
        local keymap = vim.keymap

        keymap.set("n", "<leader>ff", function()
            require("plugins.telescope.multigrep").live_multgrep()
        end, {})

        keymap.set("n", "<leader>p", project_files, {})

        keymap.set("n", "<leader>fr", builtin.resume, {})

        keymap.set("n", "<leader>fb", builtin.buffers, {})
        keymap.set("n", "<leader>fo", builtin.oldfiles, {})

        keymap.set("n", "<leader>m", builtin.marks, {})

        keymap.set("n", "<leader>cc", builtin.commands, {})
        keymap.set("n", "<leader>ch", builtin.command_history, {})

        keymap.set("n", "<leader>gb", function()
            builtin.git_branches({
                attach_mappings = function(_, map)
                    map("i", "<c-d>", actions.git_delete_branch)
                    map("n", "<c-d>", actions.git_delete_branch)
                    return true
                end,
            })
        end, {})

        keymap.set("n", "<leader>gc", builtin.git_commits, {})

        keymap.set("n", "<leader>vh", builtin.help_tags, {})

        keymap.set("n", "<leader>ds", builtin.lsp_document_symbols, {})
        keymap.set("n", "<leader>ws", builtin.lsp_workspace_symbols, {})
        keymap.set("n", "<leader>dws", builtin.lsp_dynamic_workspace_symbols, {})

        keymap.set("n", "<leader>gf", function()
            builtin.grep_string({
                search = vim.fn.expand("<cword>"),
            })
        end)

        keymap.set("n", "<leader>gF", function()
            builtin.grep_string({
                search = vim.fn.expand("<cWORD>"),
            })
        end)

        keymap.set("n", "<leader>gD", function()
            builtin.find_files({
                search_file = vim.fn.expand("<cword>"),
            })
        end)

        vim.keymap.set("n", "<leader>u", "<cmd>Telescope undo<cr>")
    end,
}