package eq2net

import (
	"fmt"
	"testing"
)

func TestGetOpcodeVersionV2(t *testing.T) {
	// Create a version map that matches the C++ implementation
	versionMap := OpcodeVersionMap{
		1:    546,
		547:  889,
		890:  1027,
		1028: 1048,
		1049: 1095,
		1096: 1184,
		1185: 1197,
		1198: 1207,
		1208: 1211,
		1212: 9999,
	}
	
	tests := []struct {
		clientVersion  uint16
		expectedOpcode uint16
	}{
		// Test first range
		{1, 1},
		{100, 1},
		{546, 1},
		
		// Test second range
		{547, 547},
		{700, 547},
		{889, 547},
		
		// Test middle ranges
		{890, 890},
		{1000, 890},
		{1027, 890},
		
		{1028, 1028},
		{1048, 1028},
		
		{1096, 1096},
		{1100, 1096},
		{1184, 1096},
		
		{1185, 1185},
		{1193, 1185},
		{1197, 1185},
		
		{1198, 1198},
		{1200, 1198},
		{1207, 1198},
		
		{1208, 1208},
		{1210, 1208},
		{1211, 1208},
		
		// Test last range
		{1212, 1212},
		{2000, 1212},
		{9999, 1212},
		
		// Test out of range (should return client version)
		{10000, 10000},
	}
	
	for _, tt := range tests {
		result := GetOpcodeVersion(tt.clientVersion, versionMap)
		if result != tt.expectedOpcode {
			t.Errorf("GetOpcodeVersion(%d) = %d, want %d", 
				tt.clientVersion, result, tt.expectedOpcode)
		}
	}
}

func TestRegularOpcodeManagerV2(t *testing.T) {
	manager := NewRegularOpcodeManager(1193)
	
	// Test loading opcodes (simulating database results)
	opcodes := map[string]uint16{
		"OP_LoginRequestMsg":   0x0001,
		"OP_LoginReplyMsg":     0x0002,
		"OP_WorldListMsg":      0x0003,
		"OP_PlayCharacterRequestMsg": 0x0004,
	}
	
	if !manager.LoadOpcodes(opcodes) {
		t.Fatal("Failed to load opcodes")
	}
	
	// Test EmuToEQ conversion
	eq := manager.EmuToEQ(OP_LoginRequestMsg)
	if eq != 0x0001 {
		t.Errorf("Expected EQ opcode 0x0001, got 0x%04x", eq)
	}
	
	// Test invalid opcode returns 0xCDCD
	eq = manager.EmuToEQ(OP_Unknown)
	if eq != 0xCDCD {
		t.Errorf("Expected 0xCDCD for unknown opcode, got 0x%04x", eq)
	}
	
	// Test EQToEmu conversion
	emu := manager.EQToEmu(0x0002)
	if emu != OP_LoginReplyMsg {
		t.Errorf("Expected emu opcode %v, got %v", OP_LoginReplyMsg, emu)
	}
	
	// Test unknown EQ opcode
	emu = manager.EQToEmu(0xFFFF)
	if emu != OP_Unknown {
		t.Errorf("Expected OP_Unknown for unknown EQ opcode, got %v", emu)
	}
	
	// Test name lookups
	name := manager.EmuToName(OP_LoginRequestMsg)
	if name != "OP_LoginRequestMsg" {
		t.Errorf("Expected 'OP_LoginRequestMsg', got '%s'", name)
	}
	
	name = manager.EQToName(0x0003)
	if name != "OP_WorldListMsg" {
		t.Errorf("Expected 'OP_WorldListMsg', got '%s'", name)
	}
}

func TestEQOpcodeManagerMapV2(t *testing.T) {
	// Create version map
	versions := OpcodeVersionMap{
		1185: 1197,
		1198: 1207,
		1208: 1211,
	}
	
	// Create opcodes for each version
	opcodesByVersion := map[uint16]map[string]uint16{
		1185: {
			"OP_LoginRequestMsg": 0x00B3,
			"OP_LoginReplyMsg":   0x00B6,
		},
		1198: {
			"OP_LoginRequestMsg": 0x00C1,
			"OP_LoginReplyMsg":   0x00C4,
		},
		1208: {
			"OP_LoginRequestMsg": 0x00D1,
			"OP_LoginReplyMsg":   0x00D4,
		},
	}
	
	// Initialize the manager map
	managerMap := NewEQOpcodeManager()
	err := managerMap.LoadFromDatabase(versions, opcodesByVersion)
	if err != nil {
		t.Fatalf("Failed to load from database: %v", err)
	}
	
	// Test getting manager for client version 1193 (should use 1185 opcodes)
	manager := managerMap.GetManagerForClient(1193, versions)
	if manager == nil {
		t.Fatal("Failed to get manager for client version 1193")
	}
	
	eq := manager.EmuToEQ(OP_LoginRequestMsg)
	if eq != 0x00B3 {
		t.Errorf("Expected 0x00B3 for version 1193, got 0x%04x", eq)
	}
	
	// Test getting manager for client version 1200 (should use 1198 opcodes)
	manager = managerMap.GetManagerForClient(1200, versions)
	if manager == nil {
		t.Fatal("Failed to get manager for client version 1200")
	}
	
	eq = manager.EmuToEQ(OP_LoginRequestMsg)
	if eq != 0x00C1 {
		t.Errorf("Expected 0x00C1 for version 1200, got 0x%04x", eq)
	}
	
	// Test getting manager for client version 1210 (should use 1208 opcodes)
	manager = managerMap.GetManagerForClient(1210, versions)
	if manager == nil {
		t.Fatal("Failed to get manager for client version 1210")
	}
	
	eq = manager.EmuToEQ(OP_LoginRequestMsg)
	if eq != 0x00D1 {
		t.Errorf("Expected 0x00D1 for version 1210, got 0x%04x", eq)
	}
}

func TestNameSearch(t *testing.T) {
	// Test finding opcodes by name
	opcode := NameSearch("OP_LoginRequestMsg")
	if opcode != OP_LoginRequestMsg {
		t.Errorf("Expected %v, got %v", OP_LoginRequestMsg, opcode)
	}
	
	opcode = NameSearch("OP_WorldListMsg")
	if opcode != OP_WorldListMsg {
		t.Errorf("Expected %v, got %v", OP_WorldListMsg, opcode)
	}
	
	// Test unknown name
	opcode = NameSearch("OP_NonExistent")
	if opcode != OP_Unknown {
		t.Errorf("Expected OP_Unknown for non-existent name, got %v", opcode)
	}
}

// BenchmarkOpcodeConversionV2 benchmarks the new implementation
func BenchmarkOpcodeConversionV2(b *testing.B) {
	manager := NewRegularOpcodeManager(1193)
	opcodes := make(map[string]uint16)
	
	// Add many opcodes for benchmarking
	for i := uint16(1); i <= 100; i++ {
		name := OpcodeNames[EmuOpcode(i)]
		if name == "" {
			name = fmt.Sprintf("OP_Test%d", i)
			OpcodeNames[EmuOpcode(i)] = name
		}
		opcodes[name] = i
	}
	
	manager.LoadOpcodes(opcodes)
	
	b.ResetTimer()
	
	b.Run("EmuToEQ", func(b *testing.B) {
		for i := 0; i < b.N; i++ {
			_ = manager.EmuToEQ(EmuOpcode(i%100 + 1))
		}
	})
	
	b.Run("EQToEmu", func(b *testing.B) {
		for i := 0; i < b.N; i++ {
			_ = manager.EQToEmu(uint16(i%100 + 1))
		}
	})
	
	b.Run("GetOpcodeVersion", func(b *testing.B) {
		versionMap := OpcodeVersionMap{
			1: 546,
			547: 889,
			890: 1027,
			1028: 1048,
			1049: 1095,
			1096: 1184,
			1185: 1197,
			1198: 1207,
			1208: 1211,
			1212: 9999,
		}
		
		for i := 0; i < b.N; i++ {
			_ = GetOpcodeVersion(uint16(i%2000+1), versionMap)
		}
	})
}