local BD = require("ui/bidi")
local ButtonDialogTitle = require("ui/widget/buttondialogtitle")
local DocSettings = require("docsettings")
local FileManagerBookInfo = require("apps/filemanager/filemanagerbookinfo")
local InputContainer = require("ui/widget/container/inputcontainer")
local Menu = require("ui/widget/menu")
local UIManager = require("ui/uimanager")
local Screen = require("device").screen
local filemanagerutil = require("apps/filemanager/filemanagerutil")
local util = require("ffi/util")
local _ = require("gettext")

local FileManagerHistory = InputContainer:extend{
    hist_menu_title = _("History"),
}

function FileManagerHistory:init()
    self.ui.menu:registerToMainMenu(self)
end

function FileManagerHistory:addToMainMenu(menu_items)
    -- insert table to main tab of filemanager menu
    menu_items.history = {
        text = self.hist_menu_title,
        callback = function()
            self:onShowHist()
        end,
    }
end

function FileManagerHistory:updateItemTable()
    -- try to stay on current page
    local select_number = nil
    if self.hist_menu.page and self.hist_menu.perpage then
        select_number = (self.hist_menu.page - 1) * self.hist_menu.perpage + 1
    end
    self.hist_menu:switchItemTable(self.hist_menu_title,
                                  require("readhistory").hist, select_number)
end

function FileManagerHistory:onSetDimensions(dimen)
    self.dimen = dimen
end

function FileManagerHistory:onMenuHold(item)
    local readerui_instance = require("apps/reader/readerui"):_getRunningInstance()
    local currently_opened_file = readerui_instance and readerui_instance.document and readerui_instance.document.file
    self.histfile_dialog = nil
    local buttons = {
        {
            {
                text = _("Purge .sdr"),
                enabled = item.file ~= currently_opened_file and DocSettings:hasSidecarFile(util.realpath(item.file)),
                callback = function()
                    local ConfirmBox = require("ui/widget/confirmbox")
                    UIManager:show(ConfirmBox:new{
                        text = util.template(_("Purge .sdr to reset settings for this document?\n\n%1"), BD.filename(item.text)),
                        ok_text = _("Purge"),
                        ok_callback = function()
                            filemanagerutil.purgeSettings(item.file)
                            require("readhistory"):fileSettingsPurged(item.file)
                            self._manager:updateItemTable()
                            UIManager:close(self.histfile_dialog)
                        end,
                    })
                end,
            },
            {
                text = _("Remove from history"),
                callback = function()
                    require("readhistory"):removeItem(item)
                    self._manager:updateItemTable()
                    UIManager:close(self.histfile_dialog)
                end,
            },
        },
        {
            {
                text = _("Delete"),
                enabled = (item.file ~= currently_opened_file and lfs.attributes(item.file, "mode")) and true or false,
                callback = function()
                    local ConfirmBox = require("ui/widget/confirmbox")
                    UIManager:show(ConfirmBox:new{
                        text = _("Are you sure that you want to delete this file?\n") .. BD.filepath(item.file) .. ("\n") .. _("If you delete a file, it is permanently lost."),
                        ok_text = _("Delete"),
                        ok_callback = function()
                            local FileManager = require("apps/filemanager/filemanager")
                            FileManager:deleteFile(item.file)
                            require("readhistory"):fileDeleted(item.file) -- (will update "lastfile" if needed)
                            self._manager:updateItemTable()
                            UIManager:close(self.histfile_dialog)
                        end,
                    })
                end,
            },
            {
                text = _("Book information"),
                enabled = FileManagerBookInfo:isSupported(item.file),
                callback = function()
                    FileManagerBookInfo:show(item.file)
                    UIManager:close(self.histfile_dialog)
                end,
             },
        },
        {},
        {
            {
                text = _("Clear history of deleted files"),
                callback = function()
                    require("readhistory"):clearMissing()
                    self._manager:updateItemTable()
                    UIManager:close(self.histfile_dialog)
                end,
             },
        },
    }
    self.histfile_dialog = ButtonDialogTitle:new{
        title = BD.filename(item.text:match("([^/]+)$")),
        title_align = "center",
        buttons = buttons,
    }
    UIManager:show(self.histfile_dialog)
    return true
end

-- Can't *actually* name it onSetRotationMode, or it also fires in FM itself ;).
function FileManagerHistory:MenuSetRotationModeHandler(rotation)
    if rotation ~= nil and rotation ~= Screen:getRotationMode() then
        UIManager:close(self._manager.hist_menu)
        -- Also re-layout ReaderView or FileManager itself
        if self._manager.ui.view and self._manager.ui.view.onSetRotationMode then
            self._manager.ui.view:onSetRotationMode(rotation)
        elseif self._manager.ui.onSetRotationMode then
            self._manager.ui:onSetRotationMode(rotation)
        else
            Screen:setRotationMode(rotation)
        end
        self._manager:onShowHist()
    end
    return true
end

function FileManagerHistory:onShowHist()
    self.hist_menu = Menu:new{
        ui = self.ui,
        width = Screen:getWidth(),
        height = Screen:getHeight(),
        covers_fullscreen = true, -- hint for UIManager:_repaint()
        is_borderless = true,
        is_popout = false,
        onMenuHold = self.onMenuHold,
        onSetRotationMode = self.MenuSetRotationModeHandler,
        _manager = self,
    }

    self:updateItemTable()
    self.hist_menu.close_callback = function()
        UIManager:close(self.hist_menu)
    end
    UIManager:show(self.hist_menu)
    return true
end

return FileManagerHistory