package common

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

type CurrencyWarsSpotlight struct {
	ID             uint32   `json:"ID"`
	SuitableRoles  []uint32 `json:"SuitableAvatarList"`
	IsCarry        bool     `json:"IsCarry"`
	IsOCEffective  bool     `json:"IsOCEffective"`
	EnemyDiffLvAdd int32    `json:"EnemyDiffLvAdd"`
	TraitID        uint32   `json:"TraitID"`
	JsonPath       string   `json:"JsonPath"`
	EffectParams   []string `json:"EffectParamList"`
}

type CurrencyWarsSpotlightPolicy struct {
	Format           uint32 `json:"format_version"`
	Client           string `json:"target_client_version"`
	Assembly         string `json:"target_assembly_sha256"`
	OfferCount       uint32 `json:"offer_count"`
	FreeRefreshCount uint32 `json:"free_refresh_count"`
}

func (c *CurrencyWarsCatalog) SpotlightData() (map[uint32]CurrencyWarsSpotlight, CurrencyWarsSpotlightPolicy, error) {
	var policy CurrencyWarsSpotlightPolicy
	var resource struct {
		Format   uint32                  `json:"format_version"`
		Client   string                  `json:"target_client_version"`
		Assembly string                  `json:"target_assembly_sha256"`
		Capture  string                  `json:"source_capture_sha256"`
		Entries  []CurrencyWarsSpotlight `json:"entries"`
	}
	raw, e := ReadResourceFile("resources/CurrencyWarsSpotlights.json")
	if e != nil {
		return nil, policy, e
	}
	if e = json.Unmarshal(raw, &resource); e != nil {
		return nil, policy, e
	}
	digest, e := hex.DecodeString(resource.Capture)
	if e != nil || len(digest) != sha256.Size || resource.Format != 1 || resource.Client != c.ClientVersion || resource.Assembly != c.Provenance.GameAssemblySHA256 || len(resource.Entries) == 0 {
		return nil, policy, fmt.Errorf("CW Spotlight capture revision differs")
	}
	rows := make(map[uint32]CurrencyWarsSpotlight, len(resource.Entries))
	for _, r := range resource.Entries {
		// Native rows can have an empty JsonPath; some effects are resolved by
		// their own engine rather than an external level graph. Retain that
		// distinction instead of rejecting the entire valid handbook capture.
		if _, exists := rows[r.ID]; exists || r.ID == 0 {
			return nil, policy, fmt.Errorf("CW Spotlight configuration identity invalid: %d", r.ID)
		}
		for _, v := range r.EffectParams {
			if !currencyWarsDecimal.MatchString(v) {
				return nil, policy, fmt.Errorf("CW Spotlight effect parameter invalid")
			}
		}
		rows[r.ID] = r
	}
	raw, e = ReadResourceFile("resources/CurrencyWarsSpotlightPolicy.json")
	if e != nil {
		return nil, policy, e
	}
	if e = json.Unmarshal(raw, &policy); e != nil {
		return nil, policy, e
	}
	if policy.Format != 1 || policy.Client != c.ClientVersion || policy.Assembly != c.Provenance.GameAssemblySHA256 || policy.OfferCount == 0 || policy.OfferCount > uint32(len(rows)) {
		return nil, policy, fmt.Errorf("CW Spotlight selection policy invalid")
	}
	return rows, policy, nil
}