// Read-only recovery inspection: decode a saved CW envelope without loading a
// player session, migrating data, contacting the Client or writing persistent.
package main

import (
	"encoding/json"
	"fmt"
	"os"
	"strconv"

	pb "gac-hkrpg-go/protocol/proto"
	"google.golang.org/protobuf/proto"
)

func main() {
	if len(os.Args) != 2 {
		fmt.Fprintln(os.Stderr, "usage: go run tools/inspect_saved_cw.go <persistent-backup>")
		os.Exit(2)
	}
	raw, err := os.ReadFile(os.Args[1])
	if err != nil {
		panic(err)
	}
	var root struct {
		CW map[string]struct {
			UID      uint32 `json:"uid"`
			Version  string `json:"client_version"`
			Assembly string `json:"assembly_sha256"`
			Revision uint64 `json:"revision"`
			Wire     []byte `json:"wire_data"`
		} `json:"currency_wars"`
	}
	if err := json.Unmarshal(raw, &root); err != nil {
		panic(err)
	}
	for key, save := range root.CW {
		if key != strconv.FormatUint(uint64(save.UID), 10) {
			panic("CW account key differs from envelope UID")
		}
		var data pb.GridFightGetDataScRsp
		if err := proto.Unmarshal(save.Wire, &data); err != nil {
			panic(err)
		}
		if data.Retcode != 0 || data.LFLCDNGALME == nil {
			panic("CW response lacks valid permanent metadata")
		}
		summary := map[string]any{"uid": save.UID, "revision": save.Revision, "client_version": save.Version, "assembly_sha256": save.Assembly, "active_run": data.DHFOFLFCLAH != nil}
		if run := data.DHFOFLFCLAH; run != nil {
			summary["run_id"] = run.UniqueId
			if pending := run.FMIGOKIDKJL; pending != nil {
				summary["queue"] = pending.QueuePosition
				summary["pending_kind"] = fmt.Sprintf("%T", pending.FGLIODAJFML)
				if offer := pending.GetIIDBLCFAAPC(); offer != nil {
					summary["bonfire_offer"] = offer
				}
			}
			for _, component := range run.NAGDJGMMCBE {
				if component == nil {
					continue
				}
				if stage := component.GetKLCPAAHDPJF(); stage != nil {
					summary["route"] = stage.EMOHLJHPOPC
					summary["chapter"] = stage.DCAHJELNJNP
					summary["section"] = stage.SectionId
					summary["boss_info"] = stage.BossInfo
					summary["camps"] = stage.HEKMEJLMGFF
				}
			}
		}
		out, err := json.Marshal(summary)
		if err != nil {
			panic(err)
		}
		fmt.Println(string(out))
	}
}