use build_html::{self, Html, HtmlContainer};

#[derive(Clone, Debug)]
pub struct Form {
    method: String,
    encoding: Option<String>,
    elements: String,
}

impl Form {
    pub fn new() -> Self {
        Self {
            method: "get".to_owned(),
            encoding: None,
            elements: "".to_owned(),
        }
    }

    pub fn with_method(mut self, method: &str) -> Self {
        self.method = method.to_owned();
        self
    }

    pub fn with_encoding(mut self, encoding: &str) -> Self {
        self.encoding = Some(encoding.to_owned());
        self
    }
}

impl Html for Form {
    fn to_html_string(&self) -> String {
        let encoding = match self.encoding {
            Some(ref encoding) => format!("encoding={encoding}", encoding = encoding),
            None => format!(""),
        };
        format!(
            "<form method={method} {encoding}>\n{elements}\n</form>\n",
            method = self.method,
            encoding = encoding,
            elements = self.elements.to_html_string()
        )
    }
}

impl HtmlContainer for Form {
    fn add_html<H: Html>(&mut self, html: H) {
        self.elements.push_str(&html.to_html_string());
    }
}

#[derive(Clone, Debug)]
pub struct Input {
    ty: String,
    name: String,
    id: String,
    value: Option<String>,
}

impl Html for Input {
    fn to_html_string(&self) -> String {
        format!(
            "<input type=\"{ty}\" name=\"{name}\" id=\"{id}\">{value}</input>\n",
            ty = self.ty,
            name = self.name,
            id = self.id,
            value = self.value.clone().unwrap_or("".to_owned()),
        )
    }
}

impl Input {
    pub fn new(ty: &str, name: &str, id: &str) -> Self {
        Self {
            ty: ty.to_owned(),
            name: name.to_owned(),
            id: id.to_owned(),
            value: None,
        }
    }

    pub fn with_value(mut self, val: &str) -> Self {
        self.value = Some(val.to_owned());
        self
    }
}

#[derive(Clone, Debug)]
pub struct Label {
    target: String,
    text: String,
}

impl Label {
    pub fn new(target: &str, text: &str) -> Self {
        Self {
            target: target.to_owned(),
            text: text.to_owned(),
        }
    }
}

impl Html for Label {
    fn to_html_string(&self) -> String {
        format!(
            "<label for=\"{target}\">{text}</label>",
            target = self.target,
            text = self.text
        )
    }
}

#[derive(Clone, Debug)]
pub struct Button {
    name: String,
    text: String,
}

impl Button {
    pub fn new(name: &str, text: &str) -> Self {
        Self {
            name: name.to_owned(),
            text: text.to_owned(),
        }
    }
}

impl Html for Button {
    fn to_html_string(&self) -> String {
        format!(
            "<button name={name}>{text}</button>",
            name = self.name,
            text = self.text
        )
    }
}