use crate::cxx::ffi;
use std::fmt;

/// Safe Rust wrapper for VerseKey with proper memory management
pub struct VerseKey {
    ptr: *mut ffi::VerseKey,
}

impl VerseKey {
    /// Create a new VerseKey
    pub fn new() -> Self {
        let ptr = ffi::new_verse_key();
        if ptr.is_null() {
            panic!("Failed to create VerseKey");
        }
        Self { ptr }
    }

    /// Create a new VerseKey from text
    pub fn from_text(text: &str) -> Self {
        let ptr = ffi::new_verse_key_from_text(text.to_string());
        if ptr.is_null() {
            panic!("Failed to create VerseKey from text");
        }
        Self { ptr }
    }

    /// Create from a raw pointer (for internal use)
    pub(crate) fn from_raw_ptr(ptr: *mut ffi::VerseKey) -> Self {
        if ptr.is_null() {
            panic!("Cannot create VerseKey from null pointer");
        }
        Self { ptr }
    }

    /// Get a reference to the underlying VerseKey
    fn as_ref(&self) -> &ffi::VerseKey {
        unsafe { &*self.ptr }
    }

    /// Get a pinned mutable reference to the underlying VerseKey
    fn as_pin_mut(&mut self) -> std::pin::Pin<&mut ffi::VerseKey> {
        unsafe { std::pin::Pin::new_unchecked(&mut *self.ptr) }
    }

    /// Check if the VerseKey is valid
    pub fn is_valid(&self) -> bool {
        !self.ptr.is_null() && self.as_ref().is_valid()
    }

    // Read-only methods
    pub fn get_error(&self) -> u8 {
        self.as_ref().get_error()
    }

    pub fn get_locale(&self) -> String {
        self.as_ref().get_locale()
    }

    pub fn get_range_text(&self) -> String {
        self.as_ref().get_range_text()
    }

    pub fn get_short_text(&self) -> String {
        self.as_ref().get_short_text()
    }

    pub fn get_text(&self) -> String {
        self.as_ref().get_text()
    }

    pub fn get_book_name(&self) -> String {
        self.as_ref().get_book_name()
    }

    pub fn get_book_abbrev(&self) -> String {
        self.as_ref().get_book_abbrev()
    }

    pub fn get_osis_book_name(&self) -> String {
        self.as_ref().get_osis_book_name()
    }

    pub fn get_osis_ref(&self) -> String {
        self.as_ref().get_osis_ref()
    }

    pub fn get_osis_ref_range_text(&self) -> String {
        self.as_ref().get_osis_ref_range_text()
    }

    pub fn get_short_range_text(&self) -> String {
        self.as_ref().get_short_range_text()
    }

    pub fn get_testament(&self) -> u8 {
        self.as_ref().get_testament()
    }

    pub fn get_testament_max(&self) -> u8 {
        self.as_ref().get_testament_max()
    }

    pub fn get_book(&self) -> u8 {
        self.as_ref().get_book()
    }

    pub fn get_book_max(&self) -> u8 {
        self.as_ref().get_book_max()
    }

    pub fn get_chapter(&self) -> u8 {
        self.as_ref().get_chapter()
    }

    pub fn get_chapter_max(&self) -> u8 {
        self.as_ref().get_chapter_max()
    }

    pub fn get_verse(&self) -> u8 {
        self.as_ref().get_verse()
    }

    pub fn get_verse_max(&self) -> u8 {
        self.as_ref().get_verse_max()
    }

    pub fn is_autonormalize(&self) -> bool {
        self.as_ref().is_autonormalize()
    }

    pub fn is_intros(&self) -> bool {
        self.as_ref().is_intros()
    }

    // Mutable methods
    pub fn normalize(&mut self, autocheck: bool) {
        self.as_pin_mut().normalize(autocheck)
    }

    pub fn pop_error(&mut self) -> u8 {
        self.as_pin_mut().pop_error()
    }

    pub fn set_locale(&mut self, locale: &str) {
        self.as_pin_mut().set_locale(&locale.to_string())
    }

    pub fn set_text(&mut self, text: &str) {
        self.as_pin_mut().set_text(&text.to_string())
    }

    pub fn set_autonormalize(&mut self, auto_normalize: bool) {
        self.as_pin_mut().set_autonormalize(auto_normalize)
    }

    pub fn set_book_name(&mut self, book_name: &str) {
        self.as_pin_mut().set_book_name(&book_name.to_string())
    }

    pub fn set_intros(&mut self, intros: bool) {
        self.as_pin_mut().set_intros(intros)
    }

    pub fn set_testament(&mut self, testament: u8) {
        self.as_pin_mut().set_testament(testament)
    }

    pub fn set_book(&mut self, book: u8) {
        self.as_pin_mut().set_book(book)
    }

    pub fn set_chapter(&mut self, chapter: u8) {
        self.as_pin_mut().set_chapter(chapter)
    }

    pub fn set_verse(&mut self, verse: u8) {
        self.as_pin_mut().set_verse(verse)
    }
}

impl Default for VerseKey {
    fn default() -> Self {
        Self::new()
    }
}

impl Clone for VerseKey {
    fn clone(&self) -> Self {
        let cloned_ptr = ffi::clone_verse_key(self.as_ref());
        if cloned_ptr.is_null() {
            panic!("Failed to clone VerseKey");
        }
        Self { ptr: cloned_ptr }
    }
}

impl Drop for VerseKey {
    fn drop(&mut self) {
        if !self.ptr.is_null() {
            unsafe {
                ffi::delete_verse_key(self.ptr);
            }
        }
    }
}

impl fmt::Debug for VerseKey {
    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
        if self.is_valid() {
            f.debug_struct("VerseKey")
                .field("text", &self.get_text())
                .field("osis_ref", &self.get_osis_ref())
                .finish()
        } else {
            f.debug_struct("VerseKey").field("valid", &false).finish()
        }
    }
}

impl fmt::Display for VerseKey {
    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
        if self.is_valid() {
            write!(f, "{}", self.get_text())
        } else {
            write!(f, "<invalid>")
        }
    }
}

unsafe impl Send for VerseKey {}
unsafe impl Sync for VerseKey {}