#include "test_framework.hpp"
#include "lumacs/buffer.hpp"

using namespace lumacs;

TEST(Buffer_Insert) {
    Buffer b("test");
    b.insert({0, 0}, "Hello");
    ASSERT_EQ(std::string("Hello"), b.content());
    
    b.insert({0, 5}, " World");
    ASSERT_EQ(std::string("Hello World"), b.content());
}

TEST(Buffer_Erase) {
    Buffer b("test");
    b.insert({0, 0}, "Hello World");
    
    // Erase " World"
    b.erase({{0, 5}, {0, 11}});
    ASSERT_EQ(std::string("Hello"), b.content());
}

TEST(Buffer_Find_Basic) {
    Buffer b("test");
    b.insert({0, 0}, "Hello World\nLine 2\nTarget found");
    
    // Find "World"
    auto res = b.find("World", {0, 0});
    ASSERT_TRUE(res.has_value());
    ASSERT_EQ(static_cast<size_t>(0), res->start.line);
    ASSERT_EQ(static_cast<size_t>(6), res->start.column);
    ASSERT_EQ(static_cast<size_t>(0), res->end.line);
    ASSERT_EQ(static_cast<size_t>(11), res->end.column);
}

TEST(Buffer_Find_NotFound) {
    Buffer b("test");
    b.insert({0, 0}, "Hello World");
    
    auto res = b.find("Missing", {0, 0});
    ASSERT_TRUE(!res.has_value());
}

TEST(Buffer_Find_MultiLine) {
    Buffer b("test");
    b.insert({0, 0}, "First\nSecond\nThird");
    
    auto res = b.find("Second", {0, 0});
    ASSERT_TRUE(res.has_value());
    ASSERT_EQ(static_cast<size_t>(1), res->start.line);
    ASSERT_EQ(static_cast<size_t>(0), res->start.column);
}

int main() {
    return TestRunner::instance().run_all();
}