package main

import "time"

type sortMethod byte

const (
	naturalSort sortMethod = iota
	nameSort
	sizeSort
	timeSort
)

type sortOption byte

const (
	dirfirstSort sortOption = 1 << iota
	hiddenSort
	reverseSort
)

type sortType struct {
	method sortMethod
	option sortOption
}

var gOpts struct {
	dircounts  bool
	drawbox    bool
	globsearch bool
	ignorecase bool
	preview    bool
	smartcase  bool
	wrapscan   bool
	period     int
	scrolloff  int
	tabstop    int
	filesep    string
	ifs        string
	previewer  string
	promptfmt  string
	shell      string
	timefmt    string
	ratios     []int
	info       []string
	shellopts  []string
	keys       map[string]expr
	cmdkeys    map[string]expr
	cmds       map[string]expr
	sortType   sortType
}

func init() {
	gOpts.dircounts = false
	gOpts.drawbox = false
	gOpts.globsearch = false
	gOpts.ignorecase = true
	gOpts.preview = true
	gOpts.smartcase = true
	gOpts.wrapscan = true
	gOpts.period = 0
	gOpts.scrolloff = 0
	gOpts.tabstop = 8
	gOpts.filesep = "\n"
	gOpts.promptfmt = "\033[32;1m%u@%h\033[0m:\033[34;1m%w/\033[0m\033[1m%f\033[0m"
	gOpts.shell = gDefaultShell
	gOpts.timefmt = time.ANSIC
	gOpts.ratios = []int{1, 2, 3}
	gOpts.info = nil
	gOpts.shellopts = nil
	gOpts.sortType = sortType{naturalSort, dirfirstSort}

	gOpts.keys = make(map[string]expr)

	gOpts.keys["k"] = &callExpr{"up", nil, 1}
	gOpts.keys["<up>"] = &callExpr{"up", nil, 1}
	gOpts.keys["<c-u>"] = &callExpr{"half-up", nil, 1}
	gOpts.keys["<c-b>"] = &callExpr{"page-up", nil, 1}
	gOpts.keys["j"] = &callExpr{"down", nil, 1}
	gOpts.keys["<down>"] = &callExpr{"down", nil, 1}
	gOpts.keys["<c-d>"] = &callExpr{"half-down", nil, 1}
	gOpts.keys["<c-f>"] = &callExpr{"page-down", nil, 1}
	gOpts.keys["h"] = &callExpr{"updir", nil, 1}
	gOpts.keys["<left>"] = &callExpr{"updir", nil, 1}
	gOpts.keys["l"] = &callExpr{"open", nil, 1}
	gOpts.keys["<right>"] = &callExpr{"open", nil, 1}
	gOpts.keys["q"] = &callExpr{"quit", nil, 1}
	gOpts.keys["gg"] = &callExpr{"top", nil, 1}
	gOpts.keys["G"] = &callExpr{"bottom", nil, 1}
	gOpts.keys["<space>"] = &callExpr{"toggle", nil, 1}
	gOpts.keys["v"] = &callExpr{"invert", nil, 1}
	gOpts.keys["u"] = &callExpr{"unmark", nil, 1}
	gOpts.keys["y"] = &callExpr{"yank", nil, 1}
	gOpts.keys["d"] = &callExpr{"delete", nil, 1}
	gOpts.keys["c"] = &callExpr{"clear", nil, 1}
	gOpts.keys["p"] = &callExpr{"put", nil, 1}
	gOpts.keys["<c-l>"] = &callExpr{"redraw", nil, 1}
	gOpts.keys["<c-r>"] = &callExpr{"reload", nil, 1}
	gOpts.keys[":"] = &callExpr{"read", nil, 1}
	gOpts.keys["$"] = &callExpr{"shell", nil, 1}
	gOpts.keys["%"] = &callExpr{"shell-pipe", nil, 1}
	gOpts.keys["!"] = &callExpr{"shell-wait", nil, 1}
	gOpts.keys["&"] = &callExpr{"shell-async", nil, 1}
	gOpts.keys["/"] = &callExpr{"search", nil, 1}
	gOpts.keys["?"] = &callExpr{"search-back", nil, 1}
	gOpts.keys["n"] = &callExpr{"search-next", nil, 1}
	gOpts.keys["N"] = &callExpr{"search-prev", nil, 1}
	gOpts.keys["<c-n>"] = &callExpr{"cmd-history-next", nil, 1}
	gOpts.keys["<c-p>"] = &callExpr{"cmd-history-prev", nil, 1}

	gOpts.keys["zh"] = &setExpr{"hidden!", ""}
	gOpts.keys["zr"] = &setExpr{"reverse!", ""}
	gOpts.keys["zn"] = &setExpr{"info", ""}
	gOpts.keys["zs"] = &setExpr{"info", "size"}
	gOpts.keys["zt"] = &setExpr{"info", "time"}
	gOpts.keys["za"] = &setExpr{"info", "size:time"}
	gOpts.keys["sn"] = &listExpr{[]expr{&setExpr{"sortby", "natural"}, &setExpr{"info", ""}}}
	gOpts.keys["ss"] = &listExpr{[]expr{&setExpr{"sortby", "size"}, &setExpr{"info", "size"}}}
	gOpts.keys["st"] = &listExpr{[]expr{&setExpr{"sortby", "time"}, &setExpr{"info", "time"}}}
	gOpts.keys["gh"] = &callExpr{"cd", []string{"~"}, 1}

	gOpts.cmdkeys = make(map[string]expr)

	gOpts.cmdkeys["<space>"] = &callExpr{"cmd-insert", []string{" "}, 1}
	gOpts.cmdkeys["<esc>"] = &callExpr{"cmd-escape", nil, 1}
	gOpts.cmdkeys["<tab>"] = &callExpr{"cmd-complete", nil, 1}
	gOpts.cmdkeys["<enter>"] = &callExpr{"cmd-enter", nil, 1}
	gOpts.cmdkeys["<c-j>"] = &callExpr{"cmd-enter", nil, 1}
	gOpts.cmdkeys["<c-n>"] = &callExpr{"cmd-history-next", nil, 1}
	gOpts.cmdkeys["<c-p>"] = &callExpr{"cmd-history-prev", nil, 1}
	gOpts.cmdkeys["<delete>"] = &callExpr{"cmd-delete", nil, 1}
	gOpts.cmdkeys["<c-d>"] = &callExpr{"cmd-delete", nil, 1}
	gOpts.cmdkeys["<bs>"] = &callExpr{"cmd-delete-back", nil, 1}
	gOpts.cmdkeys["<bs2>"] = &callExpr{"cmd-delete-back", nil, 1}
	gOpts.cmdkeys["<left>"] = &callExpr{"cmd-left", nil, 1}
	gOpts.cmdkeys["<c-b>"] = &callExpr{"cmd-left", nil, 1}
	gOpts.cmdkeys["<right>"] = &callExpr{"cmd-right", nil, 1}
	gOpts.cmdkeys["<c-f>"] = &callExpr{"cmd-right", nil, 1}
	gOpts.cmdkeys["<home>"] = &callExpr{"cmd-home", nil, 1}
	gOpts.cmdkeys["<c-a>"] = &callExpr{"cmd-home", nil, 1}
	gOpts.cmdkeys["<end>"] = &callExpr{"cmd-end", nil, 1}
	gOpts.cmdkeys["<c-e>"] = &callExpr{"cmd-end", nil, 1}
	gOpts.cmdkeys["<c-u>"] = &callExpr{"cmd-delete-home", nil, 1}
	gOpts.cmdkeys["<c-k>"] = &callExpr{"cmd-delete-end", nil, 1}
	gOpts.cmdkeys["<c-w>"] = &callExpr{"cmd-delete-unix-word", nil, 1}
	gOpts.cmdkeys["<c-y>"] = &callExpr{"cmd-yank", nil, 1}
	gOpts.cmdkeys["<c-t>"] = &callExpr{"cmd-transpose", nil, 1}
	gOpts.cmdkeys["<c-c>"] = &callExpr{"cmd-interrupt", nil, 1}
	gOpts.cmdkeys["<a-f>"] = &callExpr{"cmd-word", nil, 1}
	gOpts.cmdkeys["<a-b>"] = &callExpr{"cmd-word-back", nil, 1}
	gOpts.cmdkeys["<a-c>"] = &callExpr{"cmd-capitalize-word", nil, 1}
	gOpts.cmdkeys["<a-d>"] = &callExpr{"cmd-delete-word", nil, 1}
	gOpts.cmdkeys["<a-u>"] = &callExpr{"cmd-uppercase-word", nil, 1}
	gOpts.cmdkeys["<a-l>"] = &callExpr{"cmd-lowercase-word", nil, 1}
	gOpts.cmdkeys["<a-t>"] = &callExpr{"cmd-transpose-word", nil, 1}

	gOpts.cmds = make(map[string]expr)

	setDefaults()
}