package fzf

import (
	"math"
	"time"

	"github.com/junegunn/fzf/src/util"
)

const (
	// Core
	coordinatorDelayMax  time.Duration = 100 * time.Millisecond
	coordinatorDelayStep time.Duration = 10 * time.Millisecond

	// Reader
	readerBufferSize       = 64 * 1024
	readerSlabSize         = 128 * 1024
	readerPollIntervalMin  = 10 * time.Millisecond
	readerPollIntervalStep = 5 * time.Millisecond
	readerPollIntervalMax  = 50 * time.Millisecond

	// Terminal
	initialDelay      = 20 * time.Millisecond
	initialDelayTac   = 100 * time.Millisecond
	spinnerDuration   = 100 * time.Millisecond
	previewCancelWait = 500 * time.Millisecond
	previewChunkDelay = 100 * time.Millisecond
	previewDelayed    = 500 * time.Millisecond
	maxPatternLength  = 1000
	maxMulti          = math.MaxInt32

	// Background processes
	maxBgProcesses          = 30
	maxBgProcessesPerAction = 3

	// Matcher
	progressMinDuration = 200 * time.Millisecond

	// Capacity of each chunk
	chunkSize     int = 1024
	chunkBitWords     = (chunkSize + 63) / 64

	// Pre-allocated memory slices to minimize GC
	slab16Size int = 100 * 1024 // 200KB * 32 = 12.8MB
	slab32Size int = 2048       // 8KB * 32 = 256KB

	// Do not cache results of low selectivity queries
	queryCacheMax int = chunkSize / 2

	// Not to cache mergers with large lists
	mergerCacheMax int = 100000

	// History
	defaultHistoryMax int = 1000

	// Jump labels
	defaultJumpLabels string = "asdfghjklqwertyuiopzxcvbnm1234567890ASDFGHJKLQWERTYUIOPZXCVBNM`~;:,<.>/?'\"!@#$%^&*()[{]}-_=+"
)

// fzf events
const (
	EvtReadNew util.EventType = iota
	EvtReadFin
	EvtSearchNew
	EvtSearchProgress
	EvtSearchFin
	EvtReady
	EvtQuit
)

const (
	ExitOk        = 0
	ExitNoMatch   = 1
	ExitError     = 2
	ExitBecome    = 126
	ExitInterrupt = 130
)