package dnfbridge

import (
	"testing"
)

// TestDecodeCompanionToolRequestAcceptsToolCamelCase 是「GM 工具能存」的直接护栏。
//
// GM 工具页（GmTool90CN v2 的魔改页）发的是 camelCase + 字符串 ID；
// 服务端内部与 Server-90 用 snake_case + 数字。两者必须都能解析成功，
// 否则工具会得到 400 / character_id=0，表现为"保存失败"。
func TestDecodeCompanionToolRequestAcceptsToolCamelCase(t *testing.T) {
	body := []byte(`{
		"characterId":"1",
		"expectedRevision":7,
		"enabled":true,
		"balanceEnabled":true,
		"progressionEnabled":false,
		"randomEquipmentEnabled":true,
		"sourceCharacterId":"11",
		"sourceCharacterIds":["3","11"],
		"ai":{"buff_policy":"leader_first","combo_preset":"auto"},
		"aiProfiles":{"11":{"behavior":"protective"}}
	}`)
	request, err := DecodeCompanionToolRequest(body)
	if err != nil {
		t.Fatalf("decode camelCase: %v", err)
	}
	if request.CharacterID != 1 {
		t.Fatalf("character_id=%d want=1", request.CharacterID)
	}
	if request.ExpectedRevision != 7 {
		t.Fatalf("expected_revision=%d want=7", request.ExpectedRevision)
	}
	if !request.Enabled || !request.BalanceEnabled || request.ProgressionEnabled || !request.RandomEquipmentEnabled {
		t.Fatalf("switch decode wrong: %+v", request)
	}
	if request.SourceCharacterID != 11 {
		t.Fatalf("source_character_id=%d want=11", request.SourceCharacterID)
	}
	if len(request.SourceCharacterIDs) != 2 || request.SourceCharacterIDs[0] != 3 || request.SourceCharacterIDs[1] != 11 {
		t.Fatalf("source_character_ids=%v want=[3 11]", request.SourceCharacterIDs)
	}
	if request.AI.BuffPolicy != "leader_first" {
		t.Fatalf("ai buff_policy=%q want=leader_first", request.AI.BuffPolicy)
	}
	if profile, ok := request.AIProfiles["11"]; !ok || profile.Behavior != "protective" {
		t.Fatalf("ai_profiles=%+v want profile 11 protective", request.AIProfiles)
	}
}

// TestDecodeCompanionToolRequestAcceptsServerSnakeCase 保证内部/Server-90 协议不回归。
func TestDecodeCompanionToolRequestAcceptsServerSnakeCase(t *testing.T) {
	body := []byte(`{
		"character_id":1,
		"expected_revision":7,
		"enabled":true,
		"balance_enabled":true,
		"source_character_id":11,
		"source_character_ids":[3,11]
	}`)
	request, err := DecodeCompanionToolRequest(body)
	if err != nil {
		t.Fatalf("decode snake_case: %v", err)
	}
	if request.CharacterID != 1 || request.ExpectedRevision != 7 || request.SourceCharacterID != 11 {
		t.Fatalf("snake_case decode wrong: %+v", request)
	}
	if len(request.SourceCharacterIDs) != 2 || request.SourceCharacterIDs[1] != 11 {
		t.Fatalf("source_character_ids=%v want=[3 11]", request.SourceCharacterIDs)
	}
	if !request.BalanceEnabled {
		t.Fatalf("balance_enabled not decoded: %+v", request)
	}
}

// TestDecodeCompanionToolCharacterIDAcceptsBothSpellings 覆盖 GET 查询串。
func TestDecodeCompanionToolCharacterIDAcceptsBothSpellings(t *testing.T) {
	cases := map[string]uint16{
		"character_id=1":       1,
		"characterId=12":       12,
		"characterId=%31%32":   12,
		"a=1&characterId=65535": 65535,
	}
	for query, want := range cases {
		got, ok := DecodeCompanionToolCharacterID(query)
		if !ok || got != want {
			t.Fatalf("query %q -> (%d,%t) want %d", query, got, ok, want)
		}
	}
	for _, query := range []string{"", "characterId=0", "characterId=abc", "characterId=70000"} {
		if got, ok := DecodeCompanionToolCharacterID(query); ok {
			t.Fatalf("query %q should be rejected, got %d", query, got)
		}
	}
}

// TestDecodeCompanionToolRequestEmptyBodyIsZeroValue 保证空体不 panic，
// 由调用方按 character_id==0 走 400。
func TestDecodeCompanionToolRequestEmptyBodyIsZeroValue(t *testing.T) {
	request, err := DecodeCompanionToolRequest(nil)
	if err != nil {
		t.Fatalf("empty body: %v", err)
	}
	if request.CharacterID != 0 {
		t.Fatalf("empty body character_id=%d want=0", request.CharacterID)
	}
}