package common

import (
	"crypto/sha256"
	"encoding/hex"
	"encoding/json"
	"fmt"
	"slices"
)

type CurrencyWarsCraft struct {
	CraftID       uint32   `json:"CraftID"`
	CraftEquipID  uint32   `json:"CraftEquipID"`
	CostEquipList []uint32 `json:"CostEquipList"`
}

func LoadCurrencyWarsCrafts(catalog *CurrencyWarsCatalog) ([]CurrencyWarsCraft, error) {
	raw, err := ReadResourceFile("resources/CurrencyWarsCrafts.json")
	if err != nil {
		return nil, err
	}
	var data struct {
		Format   uint32              `json:"format_version"`
		Client   string              `json:"target_client_version"`
		Assembly string              `json:"target_assembly_sha256"`
		Hash     string              `json:"source_capture_sha256"`
		Entries  []CurrencyWarsCraft `json:"entries"`
	}
	if err = json.Unmarshal(raw, &data); err != nil {
		return nil, err
	}
	if catalog == nil || data.Format != 1 || data.Client != catalog.ClientVersion || data.Assembly != catalog.Provenance.GameAssemblySHA256 {
		return nil, fmt.Errorf("CW crafting resource revision differs")
	}
	digest, err := hex.DecodeString(data.Hash)
	if err != nil || len(digest) != sha256.Size || len(data.Entries) == 0 {
		return nil, fmt.Errorf("CW crafting provenance is missing")
	}
	seen := map[uint32]bool{}
	for _, r := range data.Entries {
		if r.CraftID == 0 || r.CraftEquipID == 0 || seen[r.CraftID] || len(r.CostEquipList) != 2 || slices.Contains(r.CostEquipList, uint32(0)) {
			return nil, fmt.Errorf("CW craft identity/material schema differs")
		}
		seen[r.CraftID] = true
	}
	return data.Entries, nil
}