//! QR 编码文本构造工具
//!
//! 集中管理各模式的文本格式（与 gui 前端 `utils/qrText.ts` 功能一致）

/// 构造 WiFi 连接字符串
pub fn build_wifi_text(ssid: &str, password: &str, encryption: &str, hidden: bool) -> String {
    let h = if hidden { "H:true;" } else { "" };
    format!("WIFI:T:{encryption};S:{ssid};P:{password};{h};")
}

/// 构造 vCard 3.0 字符串（含扩展字段）
#[allow(clippy::too_many_arguments)]
pub fn build_vcard_text(
    name: &str,
    phone: &str,
    email: &str,
    company: &str,
    address: &str,
    title: &str,
    url: &str,
    birthday: &str,
    note: &str,
    photo: &str,
) -> String {
    let mut s =
        format!("BEGIN:VCARD\nVERSION:3.0\nFN:{name}\nTEL:{phone}\nEMAIL:{email}\nORG:{company}");
    if !title.is_empty() {
        s.push_str(&format!("\nTITLE:{title}"));
    }
    if !address.is_empty() {
        s.push_str(&format!("\nADR:{address}"));
    }
    if !url.is_empty() {
        s.push_str(&format!("\nURL:{url}"));
    }
    if !birthday.is_empty() {
        s.push_str(&format!("\nBDAY:{birthday}"));
    }
    if !note.is_empty() {
        s.push_str(&format!("\nNOTE:{note}"));
    }
    if !photo.is_empty() {
        s.push_str(&format!("\nPHOTO:{photo}"));
    }
    s.push_str("\nEND:VCARD");
    s
}

/// 构造 mailto 链接
pub fn build_email_text(to: &str, subject: &str, body: &str) -> String {
    let subject_enc = urlencoding(subject);
    let body_enc = urlencoding(body);
    format!("mailto:{to}?subject={subject_enc}&body={body_enc}")
}

/// 构造电话链接
pub fn build_phone_text(number: &str) -> String {
    format!("tel:{number}")
}

/// 构造短信链接
pub fn build_sms_text(number: &str, message: &str) -> String {
    format!("smsto:{number}:{message}")
}

/// 简易 URL 编码（仅编码特殊字符）
fn urlencoding(s: &str) -> String {
    s.chars()
        .map(|c| match c {
            ' ' => "%20".into(),
            '&' => "%26".into(),
            '=' => "%3D".into(),
            '#' => "%23".into(),
            '%' => "%25".into(),
            '+' => "%2B".into(),
            '\n' => "%0A".into(),
            '\r' => "%0D".into(),
            _ => c.to_string(),
        })
        .collect()
}

#[cfg(test)]
mod tests {
    use super::*;

    #[test]
    fn test_build_wifi_text() {
        let text = build_wifi_text("MyWiFi", "pass123", "WPA", false);
        assert!(text.contains("WIFI:T:WPA;S:MyWiFi;P:pass123;"));
    }

    #[test]
    fn test_build_wifi_hidden() {
        let text = build_wifi_text("HiddenNet", "secret", "WPA2", true);
        assert!(text.contains("H:true;"));
    }

    #[test]
    fn test_build_vcard_text() {
        let text = build_vcard_text(
            "张三",
            "13800138000",
            "a@b.com",
            "公司",
            "北京",
            "",
            "",
            "",
            "",
            "",
        );
        assert!(text.contains("BEGIN:VCARD"));
        assert!(text.contains("FN:张三"));
        assert!(text.contains("END:VCARD"));
        assert!(!text.contains("TITLE:")); // 空字段不输出
    }

    #[test]
    fn test_build_vcard_full() {
        let text = build_vcard_text(
            "张三",
            "13800138000",
            "a@b.com",
            "公司",
            "北京",
            "工程师",
            "https://z.com",
            "1990-01-01",
            "备注",
            "https://z.com/p.jpg",
        );
        assert!(text.contains("TITLE:工程师"));
        assert!(text.contains("URL:https://z.com"));
        assert!(text.contains("BDAY:1990-01-01"));
        assert!(text.contains("NOTE:备注"));
        assert!(text.contains("PHOTO:https://z.com/p.jpg"));
    }

    #[test]
    fn test_build_email_text() {
        let text = build_email_text("a@b.com", "Hello World", "Test body");
        assert!(text.starts_with("mailto:a@b.com"));
        assert!(text.contains("Hello%20World"));
    }

    #[test]
    fn test_build_phone_text() {
        assert_eq!(build_phone_text("13800138000"), "tel:13800138000");
    }

    #[test]
    fn test_build_sms_text() {
        let text = build_sms_text("13800138000", "Hi");
        assert_eq!(text, "smsto:13800138000:Hi");
    }
}