---@class trouble.Mode: trouble.Config,trouble.Section.spec
---@field desc? string
---@field sections? string[]

---@class trouble.Config
---@field mode? string
---@field config? fun(opts:trouble.Config)
---@field formatters? table<string,trouble.Formatter> custom formatters
---@field filters? table<string, trouble.FilterFn> custom filters
---@field sorters? table<string, trouble.SorterFn> custom sorters
local defaults = {
    auto_close = false,      -- auto close when there are no items
    auto_open = false,       -- auto open when there are items
    auto_preview = true,     -- automatically open preview when on an item
    auto_refresh = true,     -- auto refresh when open
    auto_jump = false,       -- auto jump to the item when there's only one
    focus = false,           -- Focus the window when opened
    restore = true,          -- restores the last location in the list when opening
    follow = true,           -- Follow the current item
    indent_guides = true,    -- show indent guides
    max_items = 200,         -- limit number of items that can be displayed per section
    multiline = true,        -- render multi-line messages
    pinned = false,          -- When pinned, the opened trouble window will be bound to the current buffer
    warn_no_results = true,  -- show a warning when there are no results
    open_no_results = false, -- open the trouble window when there are no results
    ---@type trouble.Window.opts
    win = {},                -- window options for the results window. Can be a split or a floating window.
    -- Window options for the preview window. Can be a split, floating window,
    -- or `main` to show the preview in the main editor window.
    ---@type trouble.Window.opts
    preview = {
        type = "main",
        -- when a buffer is not yet loaded, the preview window will be created
        -- in a scratch buffer with only syntax highlighting enabled.
        -- Set to false, if you want the preview to always be a real loaded buffer.
        scratch = true,
    },
    -- Throttle/Debounce settings. Should usually not be changed.
    ---@type table<string, number|{ms:number, debounce?:boolean}>
    throttle = {
        refresh = 20,                            -- fetches new data when needed
        update = 10,                             -- updates the window
        render = 10,                             -- renders the window
        follow = 100,                            -- follows the current item
        preview = { ms = 100, debounce = true }, -- shows the preview for the current item
    },
    -- Key mappings can be set to the name of a builtin action,
    -- or you can define your own custom action.
    ---@type table<string, trouble.Action.spec|false>
    keys = {
        ["?"] = "help",
        r = "refresh",
        R = "toggle_refresh",
        q = "close",
        o = "jump_close",
        ["<esc>"] = "cancel",
        ["<cr>"] = "jump",
        ["<2-leftmouse>"] = "jump",
        ["<c-s>"] = "jump_split",
        ["<c-v>"] = "jump_vsplit",
        -- go down to next item (accepts count)
        -- j = "next",
        ["}"] = "next",
        ["]]"] = "next",
        -- go up to prev item (accepts count)
        -- k = "prev",
        ["{"] = "prev",
        ["[["] = "prev",
        dd = "delete",
        d = { action = "delete", mode = "v" },
        i = "inspect",
        p = "preview",
        P = "toggle_preview",
        zo = "fold_open",
        zO = "fold_open_recursive",
        zc = "fold_close",
        zC = "fold_close_recursive",
        za = "fold_toggle",
        zA = "fold_toggle_recursive",
        zm = "fold_more",
        zM = "fold_close_all",
        zr = "fold_reduce",
        zR = "fold_open_all",
        zx = "fold_update",
        zX = "fold_update_all",
        zn = "fold_disable",
        zN = "fold_enable",
        zi = "fold_toggle_enable",
        gb = { -- example of a custom action that toggles the active view filter
            action = function(view)
                view:filter({ buf = 0 }, { toggle = true })
            end,
            desc = "Toggle Current Buffer Filter",
        },
        s = { -- example of a custom action that toggles the severity
            action = function(view)
                local f = view:get_filter("severity")
                local severity = ((f and f.filter.severity or 0) + 1) % 5
                view:filter({ severity = severity }, {
                    id = "severity",
                    template = "{hl:Title}Filter:{hl} {severity}",
                    del = severity == 0,
                })
            end,
            desc = "Toggle Severity Filter",
        },
    },
    ---@type table<string, trouble.Mode>
    modes = {
        -- sources define their own modes, which you can use directly,
        -- or override like in the example below
        lsp_references = {
            -- some modes are configurable, see the source code for more details
            params = {
                include_declaration = true,
            },
        },
        -- The LSP base mode for:
        -- * lsp_definitions, lsp_references, lsp_implementations
        -- * lsp_type_definitions, lsp_declarations, lsp_command
        lsp_base = {
            params = {
                -- don't include the current location in the results
                include_current = false,
            },
        },
        -- more advanced example that extends the lsp_document_symbols
        symbols = {
            desc = "document symbols",
            mode = "lsp_document_symbols",
            focus = false,
            win = { position = "right" },
            filter = {
                -- remove Package since luals uses it for control flow structures
                ["not"] = { ft = "lua", kind = "Package" },
                any = {
                    -- all symbol kinds for help / markdown files
                    ft = { "help", "markdown" },
                    -- default set of symbol kinds
                    kind = {
                        "Class",
                        "Constructor",
                        "Enum",
                        "Field",
                        "Function",
                        "Interface",
                        "Method",
                        "Module",
                        "Namespace",
                        "Package",
                        "Property",
                        "Struct",
                        "Trait",
                    },
                },
            },
        },
    },
    -- stylua: ignore
    icons = {
        ---@type trouble.Indent.symbols
        indent        = {
            top         = "│ ",
            middle      = "├╴",
            last        = "└╴",
            -- last          = "-╴",
            -- last       = "╰╴", -- rounded
            fold_open   = " ",
            fold_closed = " ",
            ws          = "  ",
        },
        folder_closed = " ",
        folder_open   = " ",
        kinds         = {
            Array         = " ",
            Boolean       = "󰨙 ",
            Class         = " ",
            Constant      = "󰏿 ",
            Constructor   = " ",
            Enum          = " ",
            EnumMember    = " ",
            Event         = " ",
            Field         = " ",
            File          = " ",
            Function      = "󰊕 ",
            Interface     = " ",
            Key           = " ",
            Method        = "󰊕 ",
            Module        = " ",
            Namespace     = "󰦮 ",
            Null          = " ",
            Number        = "󰎠 ",
            Object        = " ",
            Operator      = " ",
            Package       = " ",
            Property      = " ",
            String        = " ",
            Struct        = "󰆼 ",
            TypeParameter = " ",
            Variable      = "󰀫 ",
        },
    },
}

return {
    {
        "folke/trouble.nvim",
        opts = vim.tbl_deep_extend("force", defaults, {
            preview = {
                position = "right",
                relative = "win",
                size = 0.5,
                type = "split",
            },
        }),
        cmd = "Trouble",
        keys = {
            {
                "<leader>xx",
                "<cmd>Trouble diagnostics toggle<cr>",
                desc = "Diagnostics (Trouble)",
            },
            {
                "<leader>xX",
                "<cmd>Trouble diagnostics toggle filter.buf=0<cr>",
                desc = "Buffer Diagnostics (Trouble)",
            },
            {
                "<leader>cs",
                "<cmd>Trouble symbols toggle focus=false<cr>",
                desc = "Symbols (Trouble)",
            },
            {
                "<leader>cl",
                "<cmd>Trouble lsp toggle focus=false win.position=right<cr>",
                desc = "LSP Definitions / references / ... (Trouble)",
            },
            {
                "<leader>xL",
                "<cmd>Trouble loclist toggle<cr>",
                desc = "Location List (Trouble)",
            },
            {
                "<leader>xQ",
                "<cmd>Trouble qflist toggle<cr>",
                desc = "Quickfix List (Trouble)",
            },
        },
    },
}
