#include <stdio.h>
#include<string.h>
#include "./include/function.h"
#include "./include/ui.h"
void Login(char *username,char*password,int *recall,char *errmsg){
    sqlite3 *db;
    int rc;

    // 打开数据库
    rc = sqlite3_open("./data/msg.db", &db);
    if (rc) {
        strcpy(errmsg,"Error:database error.");
        *recall=-1;
        return;
    }

    // SQL 查询语句：查找用户及其密码
    const char *sql = "SELECT user, password FROM users WHERE user = ?;";

    sqlite3_stmt *stmt;

    // 编译 SQL 语句
    rc = sqlite3_prepare_v2(db, sql, -1, &stmt, 0);
    if (rc != SQLITE_OK) {
        strcpy(errmsg,"Error:database error.");
        *recall=-1;
        sqlite3_close(db);
        return;
    }

    // 绑定查询参数
    sqlite3_bind_text(stmt, 1, username, -1, SQLITE_STATIC);

    rc = sqlite3_step(stmt);
    if (rc == SQLITE_ROW) {
        // 查找到用户，获取密码
        const char *db_password = (const char *)sqlite3_column_text(stmt, 1);

        // 如果密码匹配
        if (db_password && strcmp(db_password, password) == 0) {
            *recall=0;
        } else {
            strcpy(errmsg,"Incorrect username or password.");
            *recall=-1;
        }
    } else {
        strcpy(errmsg,"Incorrect username or password.");
        *recall=-1;
    }
    // 绑定查询参数
    // 清理资源
    sqlite3_finalize(stmt);
    sqlite3_close(db);

    return;
}