// Copyright (c) 2026 Storm Dragon
// Authors: Storm Dragon, Angus Kola
// SPDX-License-Identifier: GPL-3.0-or-later

package input

const (
	OCRObject            Command = "ocr-object"
	OCRWindow            Command = "ocr-window"
	OCRDesktop           Command = "ocr-desktop"
	OCRClipboard         Command = "ocr-clipboard"
	OCRPreviousCharacter Command = "ocr-previous-character"
	OCRNextCharacter     Command = "ocr-next-character"
	OCRPreviousWord      Command = "ocr-previous-word"
	OCRNextWord          Command = "ocr-next-word"
	OCRPreviousLine      Command = "ocr-previous-line"
	OCRNextLine          Command = "ocr-next-line"
	OCRLineStart         Command = "ocr-line-start"
	OCRLineEnd           Command = "ocr-line-end"
	OCRDocumentStart     Command = "ocr-document-start"
	OCRDocumentEnd       Command = "ocr-document-end"
	OCRPreviousPage      Command = "ocr-previous-page"
	OCRNextPage          Command = "ocr-next-page"
	OCRSelectAll         Command = "ocr-select-all"
	OCRCopySelection     Command = "ocr-copy-selection"
	OCRActivate          Command = "ocr-activate"
	OCRRefresh           Command = "ocr-refresh"
	OCRDismiss           Command = "ocr-dismiss"
	OCRDismissAndPass    Command = "ocr-dismiss-and-pass"
)

// OCRPendingBindings claims cancellation only while capture/recognition runs.
func OCRPendingBindings(global CommandBindings) CommandBindings {
	bindings := make(CommandBindings, len(global)+1)
	for chord, command := range global {
		bindings[chord] = command
	}
	bindings[CommandChord{Symbol: 0xff1b}] = OCRDismiss
	return bindings
}

// OCRCommandBindings overlays the temporary document controls on configured
// global commands. It never imports browser structural bindings. Chord retains
// Shift for the future selection owner; no extra persisted binding scope exists.
func OCRCommandBindings(global CommandBindings) CommandBindings {
	bindings := make(CommandBindings, len(global)+32)
	for chord, command := range global {
		bindings[chord] = command
	}
	for _, binding := range []struct {
		symbol    uint32
		modifiers uint16
		command   Command
	}{
		{leftKeySymbol, 0, OCRPreviousCharacter}, {rightKeySymbol, 0, OCRNextCharacter},
		{leftKeySymbol, controlModifier, OCRPreviousWord}, {rightKeySymbol, controlModifier, OCRNextWord},
		{upKeySymbol, 0, OCRPreviousLine}, {downKeySymbol, 0, OCRNextLine},
		{0xff50, 0, OCRLineStart}, {0xff57, 0, OCRLineEnd},
		{0xff50, controlModifier, OCRDocumentStart}, {0xff57, controlModifier, OCRDocumentEnd},
		{0xff55, 0, OCRPreviousPage}, {0xff56, 0, OCRNextPage},
	} {
		for _, shift := range []uint16{0, 1} {
			bindings[CommandChord{Symbol: binding.symbol, Modifiers: binding.modifiers | shift}] = binding.command
		}
	}
	bindings[CommandChord{Symbol: 'a', Modifiers: controlModifier}] = OCRSelectAll
	bindings[CommandChord{Symbol: 'c', Modifiers: controlModifier}] = OCRCopySelection
	bindings[CommandChord{Symbol: returnKeySymbol}] = OCRActivate
	bindings[CommandChord{Symbol: ' '}] = OCRActivate
	bindings[CommandChord{Symbol: 0xffc2, CthulhuModifier: true}] = OCRRefresh
	bindings[CommandChord{Symbol: 0xff1b}] = OCRDismiss
	bindings[CommandChord{Symbol: 0xff09}] = OCRDismissAndPass
	bindings[CommandChord{Symbol: 0xff09, Modifiers: 1}] = OCRDismissAndPass
	return bindings
}