br-reqwest 0.0.2

use json::{array, object, JsonValue};
use log::debug;
use std::collections::HashMap;
use std::fmt::Debug;
use std::{env, fs, str};
use std::io::Write;
use std::path::Path;
use std::process::Command;
use std::str::Lines;

pub struct Client {
    pub url: String,
    debug: bool,
    method: Method,
    header: HashMap<String, String>,
    body_data: JsonValue,
    content_type: ContentType,
}
impl Default for Client {
    fn default() -> Self {
        Self::new()
    }
}

impl Client {
    pub fn new() -> Self {
        Self {
            url: "".to_string(),
            debug: false,
            method: Method::NONE,
            header: Default::default(),
            body_data: object! {},
            content_type: ContentType::Text,
        }
    }
    pub fn debug(&mut self) {
        self.debug = true;
    }
    pub fn post(&mut self, url: &str) -> &mut Self {
        self.url = url.to_string();
        self.method = Method::POST;
        self
    }
    pub fn get(&mut self, url: &str) -> &mut Self {
        self.url = url.to_string();
        self.method = Method::GET;
        self
    }
    pub fn put(&mut self, url: &str) -> &mut Self {
        self.url = url.to_string();
        self.method = Method::PUT;
        self
    }
    pub fn patch(&mut self, url: &str) -> &mut Self {
        self.url = url.to_string();
        self.method = Method::PATCH;
        self
    }
    pub fn delete(&mut self, url: &str) -> &mut Self {
        self.url = url.to_string();
        self.method = Method::DELETE;
        self
    }
    pub fn head(&mut self, url: &str) -> &mut Self {
        self.url = url.to_string();
        self.method = Method::HEAD;
        self
    }
    pub fn trace(&mut self, url: &str) -> &mut Self {
        self.url = url.to_string();
        self.method = Method::TRACE;
        self
    }
    pub fn header(&mut self, key: &str, value: &str) -> &mut Self {
        self.header.insert(key.to_string(), value.to_string());
        self
    }

    pub fn query(&mut self, params: JsonValue) -> &mut Self {
        let mut txt = vec![];
        for (key, value) in params.entries() {
            txt.push(format!("{}={}", key, value));
        }
        if self.url.contains('?') {
            if !txt.is_empty() {
                self.url = format!("{}&{}", self.url, txt.join("&"));
            }
        } else if !txt.is_empty() {
            self.url = format!("{}?{}", self.url, txt.join("&"));
        }
        self
    }


    /// JSON请求
    pub fn raw_json(&mut self, data: JsonValue) -> &mut Self {
        self.header("Content-Type", ContentType::Json.str().as_str());
        self.content_type = ContentType::Json;
        self.body_data = data;
        self
    }
    pub fn raw_stream(&mut self, data: Vec<u8>, content_type: &str) -> &mut Self {
        self.header("Content-Type", content_type);
        self.content_type = ContentType::Stream;
        self.body_data = data.into();
        self
    }
    /// FormData请求
    pub fn form_data(&mut self, data: JsonValue) -> &mut Self {
        self.header("Content-Type", ContentType::FormData.str().as_str());
        self.content_type = ContentType::FormData;
        self.body_data = data;
        self
    }
    /// FormData请求
    pub fn form_urlencoded(&mut self, data: JsonValue) -> &mut Self {
        self.header("Content-Type", ContentType::FormUrlencoded.str().as_str());
        self.content_type = ContentType::FormUrlencoded;
        self.body_data = data;
        self
    }
    pub fn send(&mut self) -> Result<Response, String> {
        let mut output = Command::new("curl");
        output.arg("-i");

        output.arg("-X");
        output.arg(self.method.to_str().to_uppercase());

        output.arg(self.url.as_str());
        if !self.header.is_empty() {
            for (key, value) in self.header.iter() {
                output.arg("-H");
                output.arg(format!("{}: {}", key, value));
            }
        }

        match self.content_type {
            ContentType::FormData => {
                for (_, value) in self.body_data.entries() {
                    output.arg("-F");
                    if value[2].is_empty() {
                        output.arg(format!("{}={}", value[0], value[1]));
                    } else {
                        output.arg(format!("{}={};{}", value[0], value[1], value[2]));
                    }
                }
            }
            ContentType::FormUrlencoded => {
                output.arg("-d");
                let mut d = vec![];
                for (key, value) in self.body_data.entries() {
                    d.push(format!("{}={}", key, value))
                }
                output.arg(d.join("&"));
            }
            ContentType::Json => {
                output.arg("-d");
                output.arg(format!("{}", self.body_data));
            }
            ContentType::Xml => {}
            ContentType::Javascript => {}
            ContentType::Text => {}
            ContentType::Html => {}
            ContentType::Other(_) => {}
            ContentType::Stream => {
                output.arg("-F");
                output.arg(format!("file={}", self.body_data));
                //output.arg("-H");
                //output.arg("Transfer-Encoding: chunked");
                //output.arg("--data-binary");
                //output.arg(format!("{}", self.body_data));
            }
        }

        if self.debug {
            println!("{}", self.url);
            println!("{:?}", output);
        }
        let req = match output.output() {
            Ok(e) => e,
            Err(e) => {
                return Err(e.to_string());
            }
        };

        if req.status.success() {
            let body = req.stdout.clone();
            if self.debug {
                let text = String::from_utf8_lossy(&req.stdout);
                println!("响应内容:\n{}", text);
            }
            Ok(Response::new(self.debug, body)?)
        } else {
            let err = String::from_utf8_lossy(&req.stderr).to_string();
            let txt = match err.find("ms:") {
                None => err,
                Some(e) => {
                    err[e + 3..].trim().to_string()
                }
            };
            Err(txt)
        }
    }
}


#[derive(Debug)]
pub struct Response {
    debug: bool,
    status: i32,
    method: Method,
    headers: JsonValue,
    cookies: JsonValue,
    /// 请求体
    body: Body,
}
impl Response {
    const CRLF2: [u8; 4] = [13, 10, 13, 10];

    fn new(debug: bool, body: Vec<u8>) -> Result<Self, String> {
        let mut that = Self {
            debug,
            status: 0,
            method: Method::NONE,
            headers: object! {},
            cookies: object! {},
            body: Default::default(),
        };

        let (header, body) = match body.windows(Self::CRLF2.len()).position(|window| window == Self::CRLF2) {
            None => (vec![], vec![]),
            Some(index) => {
                let header = body[..index].to_vec();
                let body = Vec::from(&body[index + Self::CRLF2.len()..]);
                (header, body)
            }
        };


        let text = String::from_utf8_lossy(header.as_slice());
        let lines = text.lines();

        that.get_request_line(lines.clone().next().unwrap())?;
        // Header处理
        that.get_header(lines.clone())?;

        that.body.set_content(body);
        Ok(that)
    }

    /// 获取请求行信息
    fn get_request_line(&mut self, line: &str) -> Result<(), String> {
        let lines = line.split_whitespace().collect::<Vec<&str>>();
        if lines.len() < 2 {
            return Err("请求行错误".to_string());
        }
        self.method = Method::from(lines[0]);
        self.status = lines[1].parse::<i32>().unwrap();
        Ok(())
    }
    /// Header处理
    fn get_header(&mut self, data: Lines) -> Result<(), String> {
        let mut header = object! {};
        let mut cookie = object! {};
        let mut body = Body::default();

        for text in data {
            let (key, value) = match text.trim().find(":") {
                None => continue,
                Some(e) => {
                    let key = text[..e].trim().to_lowercase().clone();
                    let value = text[e + 1..].trim().to_string();
                    (key, value)
                }
            };
            match key.as_str() {
                "content-type" => match value {
                    _ if value.contains("multipart/form-data") => {
                        let boundarys = value.split("boundary=").collect::<Vec<&str>>();
                        body.boundary = boundarys[1..].join("");
                        body.content_type = ContentType::from("multipart/form-data");
                        let _ = header.insert(key.as_str(), "multipart/form-data");
                    }
                    _ => {
                        let value = match value.find(";") {
                            None => value,
                            Some(e) => value[..e].trim().to_string(),
                        };
                        body.content_type = ContentType::from(value.as_str());
                        let _ = header.insert(key.as_str(), body.content_type.str());
                    }
                },
                "content-length" => {
                    body.content_length = value.to_string().parse::<usize>().unwrap_or(0);
                }
                "cookie" => {
                    let _ = value.split(";").collect::<Vec<&str>>().iter().map(|&x| {
                        match x.find("=") {
                            None => {}
                            Some(index) => {
                                let key = x[..index].trim().to_string();
                                let val = x[index + 1..].trim().to_string();
                                let _ = cookie.insert(key.as_str(), val);
                            }
                        };
                        ""
                    }).collect::<Vec<&str>>();
                }
                _ => {
                    if self.debug {
                        debug!("header: {} = {}", key,value);
                    }
                    let _ = header.insert(key.as_str(), value);
                }
            };
        }
        self.headers = header.clone();
        self.cookies = cookie.clone();
        self.body = body.clone();
        Ok(())
    }
    pub fn status(&self) -> i32 {
        self.status
    }
    pub fn headers(&self) -> JsonValue {
        self.headers.clone()
    }
    pub fn cookies(&self) -> JsonValue {
        self.cookies.clone()
    }
    pub fn content_type(&self) -> String {
        self.body.content_type.str().clone()
    }
    pub fn json(&self) -> Result<JsonValue, String> {
        match json::parse(self.body.content.to_string().as_str()) {
            Ok(e) => Ok(e),
            Err(e) => Err(e.to_string())
        }
    }
    pub fn body(&self) -> JsonValue {
        self.body.content.clone()
    }
}

#[derive(Clone, Debug)]
pub enum Method {
    GET,
    POST,
    OPTIONS,
    PATCH,
    HEAD,
    DELETE,
    TRACE,
    PUT,
    NONE,
}

impl Method {
    pub fn to_str(&self) -> String {
        match self {
            Method::GET => "GET",
            Method::POST => "POST",
            Method::OPTIONS => "OPTIONS",
            Method::PATCH => "PATCH",
            Method::HEAD => "HEAD",
            Method::DELETE => "DELETE",
            Method::TRACE => "TRACE",
            Method::PUT => "PUT",
            Method::NONE => "NONE",
        }.to_string()
    }
    pub fn from(name: &str) -> Self {
        match name.to_lowercase().as_str() {
            "post" => Self::POST,
            "get" => Self::GET,
            "head" => Self::HEAD,
            "put" => Self::PUT,
            "delete" => Self::DELETE,
            "options" => Self::OPTIONS,
            "patch" => Self::PATCH,
            "trace" => Self::TRACE,
            _ => Self::NONE,
        }
    }
}
#[derive(Clone, Debug)]
pub enum Version {
    Http09,
    Http10,
    Http11,
    H2,
    H3,
    None,
}

impl Version {
    pub fn str(&mut self) -> String {
        match self {
            Version::Http09 => "HTTP/0.9",
            Version::Http10 => "HTTP/1.0",
            Version::Http11 => "HTTP/1.1",
            Version::H2 => "HTTP/2.0",
            Version::H3 => "HTTP/3.0",
            Version::None => "",
        }.to_string()
    }
    pub fn from(name: &str) -> Version {
        match name {
            "HTTP/0.9" => Self::Http09,
            "HTTP/1.0" => Self::Http10,
            "HTTP/1.1" => Self::Http11,
            "HTTP/2.0" => Self::H2,
            "HTTP/3.0" => Self::H3,
            _ => Self::None,
        }
    }
    pub fn set_version(name: &str) -> Version {
        match name {
            "0.9" => Self::Http09,
            "1.0" => Self::Http10,
            "1.1" => Self::Http11,
            "2.0" => Self::H2,
            "3.0" => Self::H3,
            _ => Self::None,
        }
    }
}


#[derive(Clone, Debug)]
pub enum FormData {
    /// KEY
    /// value
    /// 文本类型
    Text(String, JsonValue, String),
    /// 文件名
    /// 文件路径
    /// 文件类型
    File(String, String, String),
    None,
}


#[derive(Debug, Clone)]
pub struct Body {
    pub content_type: ContentType,
    pub boundary: String,
    pub content_length: usize,
    pub content: JsonValue,
}
impl Body {
    /// 解码
    pub fn decode(input: &str) -> Result<String, String> {
        let mut decoded = String::new();
        let bytes = input.as_bytes();
        let mut i = 0;

        while i < bytes.len() {
            if bytes[i] == b'%' {
                if i + 2 >= bytes.len() {
                    return Err("Incomplete percent-encoding".into());
                }
                let hex = &input[i + 1..i + 3];
                match u8::from_str_radix(hex, 16) {
                    Ok(byte) => decoded.push(byte as char),
                    Err(_) => return Err(format!("Invalid percent-encoding: %{}", hex)),
                }
                i += 3;
            } else if bytes[i] == b'+' {
                decoded.push(' ');
                i += 1;
            } else {
                decoded.push(bytes[i] as char);
                i += 1;
            }
        }

        Ok(decoded)
    }
    pub fn set_content(&mut self, data: Vec<u8>) {
        match self.content_type.clone() {
            ContentType::FormData => {
                let mut fields = object! {};
                let boundary_marker = format!("--{}", self.boundary);
                let text = unsafe { String::from_utf8_unchecked(data) };
                let parts = text.split(&boundary_marker).collect::<Vec<&str>>();
                for part in parts {
                    let part = part.trim();
                    if part.is_empty() || part == "--" {
                        continue; // 跳过无效部分
                    }

                    let mut headers_and_body = part.splitn(2, "\r\n\r\n");
                    if let (Some(headers), Some(body)) = (headers_and_body.next(), headers_and_body.next())
                    {
                        // 解析头部，查找 Content-Disposition
                        let headers = headers.split("\r\n");

                        let mut field_name = "";
                        let mut filename = "";
                        let mut content_type = ContentType::Text;

                        for header in headers {
                            if header.to_lowercase().starts_with("content-disposition:") {
                                match header.find("filename=\"") {
                                    None => {}
                                    Some(filename_start) => {
                                        let filename_len = filename_start + 10;
                                        let filename_end = header[filename_len..].find('"').unwrap() + filename_len;
                                        filename = &header[filename_len..filename_end];
                                    }
                                }

                                match header.find("name=\"") {
                                    None => {}
                                    Some(name_start) => {
                                        let name_start = name_start + 6;
                                        let name_end = header[name_start..].find('"').unwrap() + name_start;
                                        field_name = &header[name_start..name_end];
                                    }
                                }
                            }
                            if header.to_lowercase().starts_with("content-type:") {
                                content_type = ContentType::from(
                                    header.to_lowercase().trim_start_matches("content-type:").trim(),
                                );
                            }
                        }

                        if filename.is_empty() {
                            fields[field_name.to_string()] = JsonValue::from(body);
                        } else {
                            // 获取系统临时目录
                            let mut temp_dir = env::temp_dir();
                            // 构造临时文件的完整路径
                            temp_dir.push(filename);
                            // 打开（创建）临时文件
                            let mut temp_file = match fs::File::create(&temp_dir) {
                                Ok(e) => e,
                                Err(_) => continue,
                            };
                            if temp_file.write(body.as_bytes()).is_ok() {
                                if fields[field_name.to_string()].is_empty() {
                                    fields[field_name.to_string()] = array![]
                                }

                                let extension = Path::new(filename).extension() // 可能返回 None
                                                                   .and_then(|ext| ext.to_str()); // 转换为 &str

                                let suffix = extension.unwrap_or("txt");

                                fields[field_name.to_string()].push(object! {
                                        //id:sha_256(body.as_bytes().to_vec()),
                                        name:filename,
                                        suffix:suffix,
                                        size:body.len(),
                                        "type":content_type.str(),
                                        file:temp_dir.to_str()
                                    }).unwrap();
                            };
                        }
                    }
                }
                self.content = fields;
            }
            ContentType::FormUrlencoded => {
                let text = unsafe { String::from_utf8_unchecked(data) };
                let params = text.split("&").collect::<Vec<&str>>();
                let mut list = object! {};
                for param in params.iter() {
                    let t = param.split("=").collect::<Vec<&str>>().iter().map(|&x| Body::decode(x).unwrap_or(x.to_string())).collect::<Vec<String>>();
                    list[t[0].to_string()] = t[1].clone().into();
                }
                self.content = list;
            }
            ContentType::Json => {
                let text = unsafe { String::from_utf8_unchecked(data) };
                self.content = json::parse(text.as_str()).unwrap_or(object! {});
            }
            ContentType::Xml => {
                let text = unsafe { String::from_utf8_unchecked(data) };
                self.content = text.into();
            }
            ContentType::Html | ContentType::Text | ContentType::Javascript => {
                let text = unsafe { String::from_utf8_unchecked(data) };
                self.content = text.into();
            }
            ContentType::Other(name) => match name.as_str() {
                "application/pdf" => {
                    let text = unsafe { String::from_utf8_unchecked(data) };
                    self.content = text.into();
                }
                _ => {
                    let text = unsafe { String::from_utf8_unchecked(data) };
                    self.content = text.into();
                }
            },
            ContentType::Stream => {}
        }
    }
}

impl Default for Body {
    fn default() -> Self {
        Self {
            content_type: ContentType::Other("text/plain".to_string()),
            boundary: "".to_string(),
            content_length: 0,
            content: object! {},
        }
    }
}

/// 内容类型
#[derive(Debug, Clone)]
pub enum ContentType {
    FormData,
    FormUrlencoded,
    Json,
    Xml,
    Javascript,
    Text,
    Html,
    Stream,
    Other(String),
}
impl ContentType {
    pub fn from(name: &str) -> Self {
        match name {
            "multipart/form-data" => Self::FormData,
            "application/x-www-form-urlencoded" => Self::FormUrlencoded,
            "application/json" => Self::Json,
            "application/xml" | "text/xml" => Self::Xml,
            "application/javascript" => Self::Javascript,
            "text/html" => Self::Html,
            "text/plain" => Self::Text,
            "application/octet-stream" => Self::Stream,
            _ => Self::Other(name.to_string()),
        }
    }
    pub fn str(&self) -> String {
        match self {
            Self::FormData => "multipart/form-data",
            Self::FormUrlencoded => "application/x-www-form-urlencoded",
            Self::Json => "application/json",
            Self::Xml => "application/xml",
            Self::Javascript => "application/javascript",
            Self::Text => "text/plain",
            Self::Html => "text/html",
            Self::Other(name) => name,
            Self::Stream => "application/octet-stream",
        }.to_string()
    }
}