#![allow(non_snake_case)]
use std::{cell::UnsafeCell, default::Default, ffi::c_void, mem, ptr};

use windows::{
    core::{Error, IUnknown, IUnknown_Vtbl, Interface, Result, HRESULT, PCWSTR, PWSTR},
    Win32::{
        Foundation::{BOOL, E_POINTER, E_UNEXPECTED, S_OK},
        System::Com::CoTaskMemAlloc,
    },
};

use windows_implement::implement;
use windows_interface::interface;

use crate::{
    pwstr::{pwstr_from_str, string_from_pcwstr},
    Microsoft::Web::WebView2::Win32::{
        ICoreWebView2CustomSchemeRegistration, ICoreWebView2CustomSchemeRegistration_Impl,
        ICoreWebView2EnvironmentOptions, ICoreWebView2EnvironmentOptions2,
        ICoreWebView2EnvironmentOptions2_Impl, ICoreWebView2EnvironmentOptions3,
        ICoreWebView2EnvironmentOptions3_Impl, ICoreWebView2EnvironmentOptions5,
        ICoreWebView2EnvironmentOptions5_Impl, ICoreWebView2EnvironmentOptions6,
        ICoreWebView2EnvironmentOptions6_Impl, ICoreWebView2EnvironmentOptions7,
        ICoreWebView2EnvironmentOptions7_Impl, ICoreWebView2EnvironmentOptions8,
        ICoreWebView2EnvironmentOptions8_Impl, ICoreWebView2EnvironmentOptions_Impl,
        COREWEBVIEW2_CHANNEL_SEARCH_KIND, COREWEBVIEW2_CHANNEL_SEARCH_KIND_MOST_STABLE,
        COREWEBVIEW2_RELEASE_CHANNELS, COREWEBVIEW2_RELEASE_CHANNELS_BETA,
        COREWEBVIEW2_RELEASE_CHANNELS_CANARY, COREWEBVIEW2_RELEASE_CHANNELS_DEV,
        COREWEBVIEW2_RELEASE_CHANNELS_STABLE, COREWEBVIEW2_SCROLLBAR_STYLE,
        COREWEBVIEW2_SCROLLBAR_STYLE_DEFAULT, CORE_WEBVIEW_TARGET_PRODUCT_VERSION,
    },
};

#[implement(
    ICoreWebView2EnvironmentOptions,
    ICoreWebView2EnvironmentOptions2,
    ICoreWebView2EnvironmentOptions3,
    IFixedEnvironmentOptions4,
    ICoreWebView2EnvironmentOptions5,
    ICoreWebView2EnvironmentOptions6,
    ICoreWebView2EnvironmentOptions7,
    ICoreWebView2EnvironmentOptions8
)]
pub struct CoreWebView2EnvironmentOptions {
    additional_browser_arguments: UnsafeCell<String>,
    language: UnsafeCell<String>,
    target_compatible_browser_version: UnsafeCell<String>,
    allow_single_sign_on_using_os_primary_account: UnsafeCell<bool>,
    exclusive_user_data_folder_access: UnsafeCell<bool>,
    is_custom_crash_reporting_enabled: UnsafeCell<bool>,
    scheme_registrations: UnsafeCell<Vec<Option<ICoreWebView2CustomSchemeRegistration>>>,
    enable_tracking_prevention: UnsafeCell<bool>,
    are_browser_extensions_enabled: UnsafeCell<bool>,
    channel_search_kind: UnsafeCell<COREWEBVIEW2_CHANNEL_SEARCH_KIND>,
    release_channels: UnsafeCell<COREWEBVIEW2_RELEASE_CHANNELS>,
    scroll_bar_style: UnsafeCell<COREWEBVIEW2_SCROLLBAR_STYLE>,
}

impl Default for CoreWebView2EnvironmentOptions {
    fn default() -> Self {
        Self {
            additional_browser_arguments: String::new().into(),
            language: String::new().into(),
            target_compatible_browser_version: unsafe {
                CORE_WEBVIEW_TARGET_PRODUCT_VERSION.to_string()
            }
            .unwrap_or_default()
            .into(),
            allow_single_sign_on_using_os_primary_account: false.into(),
            exclusive_user_data_folder_access: false.into(),
            is_custom_crash_reporting_enabled: false.into(),
            scheme_registrations: Vec::new().into(),
            enable_tracking_prevention: true.into(),
            are_browser_extensions_enabled: false.into(),
            channel_search_kind: COREWEBVIEW2_CHANNEL_SEARCH_KIND_MOST_STABLE.into(),
            release_channels: (COREWEBVIEW2_RELEASE_CHANNELS_BETA
                | COREWEBVIEW2_RELEASE_CHANNELS_CANARY
                | COREWEBVIEW2_RELEASE_CHANNELS_DEV
                | COREWEBVIEW2_RELEASE_CHANNELS_STABLE)
                .into(),
            scroll_bar_style: COREWEBVIEW2_SCROLLBAR_STYLE_DEFAULT.into(),
        }
    }
}

impl CoreWebView2EnvironmentOptions {
    /// Equivalent to `ICoreWebView2EnvironmentOptions::AdditionalBrowserArguments` without
    /// extra memory copies or type conversions.
    ///
    /// # Safety
    ///
    /// This method reads from the same [`UnsafeCell<String>`] as the COM method, but it does not
    /// write to a mutable pointer for the result.
    pub unsafe fn additional_browser_arguments(&self) -> &str {
        (*self.additional_browser_arguments.get()).as_str()
    }

    /// Equivalent to `ICoreWebView2EnvironmentOptions::SetAdditionalBrowserArguments` without
    /// extra memory copies or type conversions.
    ///
    /// # Safety
    ///
    /// This method writes to the same [`UnsafeCell<String>`] as the COM method. It takes an
    /// immutable reference to `self` so that it can be reused in the COM method.
    pub unsafe fn set_additional_browser_arguments(&self, value: String) {
        *self.additional_browser_arguments.get() = value;
    }

    /// Equivalent to `ICoreWebView2EnvironmentOptions::Language` without extra memory copies or
    /// type conversions.
    ///
    /// # Safety
    ///
    /// This method reads from the same [`UnsafeCell<String>`] as the COM method, but it does not
    /// write to a mutable pointer for the result.
    pub unsafe fn language(&self) -> &str {
        (*self.language.get()).as_str()
    }

    /// Equivalent to `ICoreWebView2EnvironmentOptions::SetLanguage` without extra memory copies or
    /// type conversions.
    ///
    /// # Safety
    ///
    /// This method writes to the same [`UnsafeCell<String>`] as the COM method, but it does not
    /// dereference a pointer for the `value` parameter. It takes an immutable reference to `self`
    /// so that it can be reused in the COM method.
    pub unsafe fn set_language(&self, value: String) {
        *self.language.get() = value;
    }

    /// Equivalent to `ICoreWebView2EnvironmentOptions::TargetCompatibleBrowserVersion` without
    /// extra memory copies or type conversions.
    ///
    /// # Safety
    ///
    /// This method reads from the same [`UnsafeCell<String>`] as the COM method, but it does not
    /// write to a mutable pointer for the result.
    pub unsafe fn target_compatible_browser_version(&self) -> &str {
        (*self.target_compatible_browser_version.get()).as_str()
    }

    /// Equivalent to `ICoreWebView2EnvironmentOptions::SetTargetCompatibleBrowserVersion` without
    /// extra memory copies or type conversions.
    ///
    /// # Safety
    ///
    /// This method writes to the same [`UnsafeCell<String>`] as the COM method, but it does not
    /// dereference a pointer for the `value` parameter. It takes an immutable reference to `self`
    /// so that it can be reused in the COM method.
    pub unsafe fn set_target_compatible_browser_version(&self, value: String) {
        *self.target_compatible_browser_version.get() = value;
    }

    /// Equivalent to `ICoreWebView2EnvironmentOptions::AllowSingleSignOnUsingOSPrimaryAccount`
    /// without extra memory copies or type conversions.
    ///
    /// # Safety
    ///
    /// This method reads from the same [`UnsafeCell<bool>`] as the COM method, but it does not
    /// write to a mutable pointer for the result.
    pub unsafe fn allow_single_sign_on_using_os_primary_account(&self) -> bool {
        *self.allow_single_sign_on_using_os_primary_account.get()
    }

    /// Equivalent to `ICoreWebView2EnvironmentOptions::SetAllowSingleSignOnUsingOSPrimaryAccount`
    /// without extra memory copies or type conversions.
    ///
    /// # Safety
    ///
    /// This method writes to the same [`UnsafeCell<bool>`] as the COM method. It takes an
    /// immutable reference to `self` so that it can be reused in the COM method.
    pub unsafe fn set_allow_single_sign_on_using_os_primary_account(&self, value: bool) {
        *self.allow_single_sign_on_using_os_primary_account.get() = value;
    }

    /// Equivalent to `ICoreWebView2EnvironmentOptions2::ExclusiveUserDataFolderAccess` without
    /// extra memory copies or type conversions.
    ///
    /// # Safety
    ///
    /// This method reads from the same [`UnsafeCell<bool>`] as the COM method, but it does not
    /// write to a mutable pointer for the result.
    pub unsafe fn exclusive_user_data_folder_access(&self) -> bool {
        *self.exclusive_user_data_folder_access.get()
    }

    /// Equivalent to `ICoreWebView2EnvironmentOptions2::SetExclusiveUserDataFolderAccess` without
    /// extra memory copies or type conversions.
    ///
    /// # Safety
    ///
    /// This method writes to the same [`UnsafeCell<bool>`] as the COM method. It takes an
    /// immutable reference to `self` so that it can be reused in the COM method.
    pub unsafe fn set_exclusive_user_data_folder_access(&self, value: bool) {
        *self.exclusive_user_data_folder_access.get() = value;
    }

    /// Equivalent to `ICoreWebView2EnvironmentOptions3::IsCustomCrashReportingEnabled` without
    /// extra memory copies or type conversions.
    ///
    /// # Safety
    ///
    /// This method reads from the same [`UnsafeCell<bool>`] as the COM method, but it does not
    /// write to a mutable pointer for the result.
    pub unsafe fn is_custom_crash_reporting_enabled(&self) -> bool {
        *self.is_custom_crash_reporting_enabled.get()
    }

    /// Equivalent to `ICoreWebView2EnvironmentOptions3::SetIsCustomCrashReportingEnabled` without
    /// extra memory copies or type conversions.
    ///
    /// # Safety
    ///
    /// This method writes to the same [`UnsafeCell<bool>`] as the COM method. It takes an
    /// immutable reference to `self` so that it can be reused in the COM method.
    pub unsafe fn set_is_custom_crash_reporting_enabled(&self, value: bool) {
        *self.is_custom_crash_reporting_enabled.get() = value;
    }

    /// Equivalent to [`IFixedEnvironmentOptions4`]`::GetCustomSchemeRegistrations` without extra
    /// memory copies or type conversions.
    ///
    /// # Safety
    ///
    /// This method reads from the same [`UnsafeCell<Vec<>>`] as the COM method, but it does not
    /// allocate or write to a mutable pointer for the result.
    pub unsafe fn scheme_registrations(
        &self,
    ) -> Vec<Option<ICoreWebView2CustomSchemeRegistration>> {
        (*self.scheme_registrations.get()).clone()
    }

    /// Equivalent to [`IFixedEnvironmentOptions4`]`::SetCustomSchemeRegistrations` without extra
    /// memory copies or type conversions.
    ///
    /// # Safety
    ///
    /// This method writes to the same [`UnsafeCell<Vec<>>`] as the COM method. It takes an
    /// immutable reference to `self` for consistency with the other public set methods, however
    /// the COM method implementation does not actually reuse it.
    pub unsafe fn set_scheme_registrations(
        &self,
        value: Vec<Option<ICoreWebView2CustomSchemeRegistration>>,
    ) {
        *self.scheme_registrations.get() = value;
    }

    /// Equivalent to `ICoreWebView2EnvironmentOptions5::EnableTrackingPrevention` without
    /// extra memory copies or type conversions.
    ///
    /// # Safety
    ///
    /// This method reads from the same [`UnsafeCell<bool>`] as the COM method, but it does not
    /// write to a mutable pointer for the result.
    pub unsafe fn enable_tracking_prevention(&self) -> bool {
        *self.enable_tracking_prevention.get()
    }

    /// Equivalent to `ICoreWebView2EnvironmentOptions5::SetEnableTrackingPrevention` without
    /// extra memory copies or type conversions.
    ///
    /// # Safety
    ///
    /// This method writes to the same [`UnsafeCell<bool>`] as the COM method. It takes an
    /// immutable reference to `self` so that it can be reused in the COM method.
    pub unsafe fn set_enable_tracking_prevention(&self, value: bool) {
        *self.enable_tracking_prevention.get() = value;
    }

    /// Equivalent to `ICoreWebView2EnvironmentOptions6::AreBrowserExtensionsEnabled` without
    /// extra memory copies or type conversions.
    ///
    /// # Safety
    ///
    /// This method reads from the same [`UnsafeCell<bool>`] as the COM method, but it does not
    /// write to a mutable pointer for the result.
    pub unsafe fn are_browser_extensions_enabled(&self) -> bool {
        *self.are_browser_extensions_enabled.get()
    }

    /// Equivalent to `ICoreWebView2EnvironmentOptions6::SetAreBrowserExtensionsEnabled` without
    /// extra memory copies or type conversions.
    ///
    /// # Safety
    ///
    /// This method writes to the same [`UnsafeCell<bool>`] as the COM method. It takes an
    /// immutable reference to `self` so that it can be reused in the COM method.
    pub unsafe fn set_are_browser_extensions_enabled(&self, value: bool) {
        *self.are_browser_extensions_enabled.get() = value;
    }

    /// Equivalent to `ICoreWebView2EnvironmentOptions7::ChannelSearchKind` without extra memory
    /// copies or type conversions.
    ///
    /// # Safety
    ///
    /// This method reads from the same [`UnsafeCell<COREWEBVIEW2_CHANNEL_SEARCH_KIND>`] as the COM
    /// method, but it does not write to a mutable pointer for the result.
    pub unsafe fn channel_search_kind(&self) -> COREWEBVIEW2_CHANNEL_SEARCH_KIND {
        *self.channel_search_kind.get()
    }

    /// Equivalent to `ICoreWebView2EnvironmentOptions7::SetChannelSearchKind` without extra memory
    /// copies or type conversions.
    ///
    /// # Safety
    ///
    /// This method writes to the same [`UnsafeCell<COREWEBVIEW2_CHANNEL_SEARCH_KIND>`] as the COM
    /// method. It takes an immutable reference to `self` so that it can be reused in the COM
    /// method.
    pub unsafe fn set_channel_search_kind(&self, value: COREWEBVIEW2_CHANNEL_SEARCH_KIND) {
        *self.channel_search_kind.get() = value;
    }

    /// Equivalent to `ICoreWebView2EnvironmentOptions7::ReleaseChannels` without extra memory
    /// copies or type conversions.
    ///
    /// # Safety
    ///
    /// This method reads from the same [`UnsafeCell<COREWEBVIEW2_RELEASE_CHANNELS>`] as the COM
    /// method, but it does not write to a mutable pointer for the result.
    pub unsafe fn release_channels(&self) -> COREWEBVIEW2_RELEASE_CHANNELS {
        *self.release_channels.get()
    }

    /// Equivalent to `ICoreWebView2EnvironmentOptions7::SetReleaseChannels` without extra memory
    /// copies or type conversions.
    ///
    /// # Safety
    ///
    /// This method writes to the same [`UnsafeCell<COREWEBVIEW2_RELEASE_CHANNELS>`] as the COM
    /// method. It takes an immutable reference to `self` so that it can be reused in the COM
    /// method.
    pub unsafe fn set_release_channels(&self, value: COREWEBVIEW2_RELEASE_CHANNELS) {
        *self.release_channels.get() = value;
    }

    /// Equivalent to `ICoreWebView2EnvironmentOptions8::ScrollBarStyle` without extra memory
    /// copies or type conversions.
    ///
    /// # Safety
    ///
    /// This method reads from the same [`UnsafeCell<COREWEBVIEW2_SCROLLBAR_STYLE>`] as the COM
    /// method, but it does not write to a mutable pointer for the result.
    pub unsafe fn scroll_bar_style(&self) -> COREWEBVIEW2_SCROLLBAR_STYLE {
        *self.scroll_bar_style.get()
    }

    /// Equivalent to `ICoreWebView2EnvironmentOptions8::SetScrollBarStyle` without extra memory
    /// copies or type conversions.
    ///
    /// # Safety
    ///
    /// This method writes to the same [`UnsafeCell<COREWEBVIEW2_SCROLLBAR_STYLE>`] as the COM
    /// method. It takes an immutable reference to `self` so that it can be reused in the COM
    /// method.
    pub unsafe fn set_scroll_bar_style(&self, value: COREWEBVIEW2_SCROLLBAR_STYLE) {
        *self.scroll_bar_style.get() = value;
    }
}

#[allow(clippy::not_unsafe_ptr_arg_deref)]
impl ICoreWebView2EnvironmentOptions_Impl for CoreWebView2EnvironmentOptions_Impl {
    fn AdditionalBrowserArguments(&self, result: *mut PWSTR) -> Result<()> {
        if result.is_null() {
            E_POINTER.ok()
        } else {
            unsafe { *result = pwstr_from_str(self.additional_browser_arguments()) };
            Ok(())
        }
    }

    fn SetAdditionalBrowserArguments(&self, value: &PCWSTR) -> Result<()> {
        unsafe { self.set_additional_browser_arguments(string_from_pcwstr(value)) };
        Ok(())
    }

    fn Language(&self, result: *mut PWSTR) -> Result<()> {
        if result.is_null() {
            E_POINTER.ok()
        } else {
            unsafe { *result = pwstr_from_str(self.language()) };
            Ok(())
        }
    }

    fn SetLanguage(&self, value: &PCWSTR) -> Result<()> {
        unsafe { self.set_language(string_from_pcwstr(value)) };
        Ok(())
    }

    fn TargetCompatibleBrowserVersion(&self, result: *mut PWSTR) -> Result<()> {
        if result.is_null() {
            E_POINTER.ok()
        } else {
            unsafe { *result = pwstr_from_str(self.target_compatible_browser_version()) };
            Ok(())
        }
    }

    fn SetTargetCompatibleBrowserVersion(&self, value: &PCWSTR) -> Result<()> {
        unsafe { self.set_target_compatible_browser_version(string_from_pcwstr(value)) };
        Ok(())
    }

    fn AllowSingleSignOnUsingOSPrimaryAccount(&self, result: *mut BOOL) -> Result<()> {
        if result.is_null() {
            E_POINTER.ok()
        } else {
            unsafe { *result = self.allow_single_sign_on_using_os_primary_account().into() };
            Ok(())
        }
    }

    fn SetAllowSingleSignOnUsingOSPrimaryAccount(&self, value: BOOL) -> Result<()> {
        unsafe {
            self.set_allow_single_sign_on_using_os_primary_account(value.into());
        }
        Ok(())
    }
}

#[allow(clippy::not_unsafe_ptr_arg_deref)]
impl ICoreWebView2EnvironmentOptions2_Impl for CoreWebView2EnvironmentOptions_Impl {
    fn ExclusiveUserDataFolderAccess(&self, result: *mut BOOL) -> Result<()> {
        if result.is_null() {
            E_POINTER.ok()
        } else {
            unsafe { *result = self.exclusive_user_data_folder_access().into() };
            Ok(())
        }
    }

    fn SetExclusiveUserDataFolderAccess(&self, value: BOOL) -> Result<()> {
        unsafe {
            self.set_exclusive_user_data_folder_access(value.into());
        }
        Ok(())
    }
}

#[allow(clippy::not_unsafe_ptr_arg_deref)]
impl ICoreWebView2EnvironmentOptions3_Impl for CoreWebView2EnvironmentOptions_Impl {
    fn IsCustomCrashReportingEnabled(&self, result: *mut BOOL) -> Result<()> {
        if result.is_null() {
            E_POINTER.ok()
        } else {
            unsafe { *result = self.is_custom_crash_reporting_enabled().into() };
            Ok(())
        }
    }

    fn SetIsCustomCrashReportingEnabled(&self, value: BOOL) -> Result<()> {
        unsafe {
            self.set_is_custom_crash_reporting_enabled(value.into());
        }
        Ok(())
    }
}

/// This is an alternate declaration of the [`crate::Microsoft::Web::WebView2::Win32::ICoreWebView2EnvironmentOptions4`]
/// interface, which matches the parameters for `SetCustomSchemeRegistrations`. The `windows`
/// crate mistakenly interprets the array of interface pointers as a pointer to an out-param,
/// and it converts that into a `Result<Option<ICoreWebView2CustomSchemeRegistration>>`.
#[interface("AC52D13F-0D38-475A-9DCA-876580D6793E")]
pub unsafe trait IFixedEnvironmentOptions4: IUnknown {
    fn GetCustomSchemeRegistrations(
        &self,
        count: *mut u32,
        scheme_registrations: *mut *mut *mut c_void,
    ) -> HRESULT;

    fn SetCustomSchemeRegistrations(
        &self,
        count: u32,
        scheme_registrations: *const *mut c_void,
    ) -> HRESULT;
}

#[allow(clippy::not_unsafe_ptr_arg_deref)]
impl IFixedEnvironmentOptions4_Impl for CoreWebView2EnvironmentOptions_Impl {
    #[allow(clippy::crosspointer_transmute)]
    unsafe fn GetCustomSchemeRegistrations(
        &self,
        count: *mut u32,
        results: *mut *mut *mut c_void,
    ) -> HRESULT {
        if count.is_null() || results.is_null() {
            E_POINTER
        } else {
            let scheme_registrations = &*self.scheme_registrations.get();
            if let Ok(length) = scheme_registrations.len().try_into() {
                *count = length;
                if !scheme_registrations.is_empty() {
                    *results = CoTaskMemAlloc(
                        mem::size_of::<*mut c_void>() * (*scheme_registrations).len(),
                    ) as *mut *mut _;
                    let results =
                        ptr::slice_from_raw_parts_mut(*results, scheme_registrations.len());
                    for (i, scheme) in scheme_registrations.iter().enumerate() {
                        (*results)[i] = scheme
                            .clone()
                            .map_or(ptr::null_mut(), |scheme| scheme.into_raw())
                    }
                } else {
                    *results = ptr::null_mut();
                }
                S_OK
            } else {
                E_UNEXPECTED
            }
        }
    }

    unsafe fn SetCustomSchemeRegistrations(
        &self,
        count: u32,
        values: *const *mut c_void,
    ) -> HRESULT {
        if let Ok(count) = count.try_into() {
            let scheme_registrations = &mut *self.scheme_registrations.get();
            scheme_registrations.clear();
            scheme_registrations.reserve_exact(count);
            let values = &*ptr::slice_from_raw_parts(values, count);
            for &scheme in values.iter() {
                scheme_registrations.push(
                    ICoreWebView2CustomSchemeRegistration::from_raw_borrowed(&scheme).cloned(),
                );
            }
            S_OK
        } else {
            E_UNEXPECTED
        }
    }
}

impl ICoreWebView2EnvironmentOptions5_Impl for CoreWebView2EnvironmentOptions_Impl {
    #[allow(clippy::not_unsafe_ptr_arg_deref)]
    fn EnableTrackingPrevention(&self, value: *mut BOOL) -> windows_core::Result<()> {
        unsafe {
            let value = value.as_mut().ok_or(Error::from(E_POINTER))?;
            *value = self.enable_tracking_prevention().into()
        };
        Ok(())
    }

    fn SetEnableTrackingPrevention(
        &self,
        value: windows::Win32::Foundation::BOOL,
    ) -> windows_core::Result<()> {
        unsafe {
            self.set_enable_tracking_prevention(value.into());
        }
        Ok(())
    }
}

impl ICoreWebView2EnvironmentOptions6_Impl for CoreWebView2EnvironmentOptions_Impl {
    #[allow(clippy::not_unsafe_ptr_arg_deref)]
    fn AreBrowserExtensionsEnabled(&self, value: *mut BOOL) -> windows_core::Result<()> {
        unsafe {
            let value = value.as_mut().ok_or(Error::from(E_POINTER))?;
            *value = self.are_browser_extensions_enabled().into()
        };
        Ok(())
    }

    fn SetAreBrowserExtensionsEnabled(
        &self,
        value: windows::Win32::Foundation::BOOL,
    ) -> windows_core::Result<()> {
        unsafe {
            self.set_are_browser_extensions_enabled(value.into());
        }
        Ok(())
    }
}

impl ICoreWebView2EnvironmentOptions7_Impl for CoreWebView2EnvironmentOptions_Impl {
    #[allow(clippy::not_unsafe_ptr_arg_deref)]
    fn ChannelSearchKind(
        &self,
        value: *mut COREWEBVIEW2_CHANNEL_SEARCH_KIND,
    ) -> windows_core::Result<()> {
        unsafe {
            let value = value.as_mut().ok_or(Error::from(E_POINTER))?;
            *value = self.channel_search_kind()
        };
        Ok(())
    }

    fn SetChannelSearchKind(
        &self,
        value: COREWEBVIEW2_CHANNEL_SEARCH_KIND,
    ) -> windows_core::Result<()> {
        unsafe {
            self.set_channel_search_kind(value);
        }
        Ok(())
    }

    #[allow(clippy::not_unsafe_ptr_arg_deref)]
    fn ReleaseChannels(
        &self,
        value: *mut COREWEBVIEW2_RELEASE_CHANNELS,
    ) -> windows_core::Result<()> {
        unsafe {
            let value = value.as_mut().ok_or(Error::from(E_POINTER))?;
            *value = self.release_channels()
        };
        Ok(())
    }

    fn SetReleaseChannels(&self, value: COREWEBVIEW2_RELEASE_CHANNELS) -> windows_core::Result<()> {
        unsafe {
            self.set_release_channels(value);
        }
        Ok(())
    }
}

impl ICoreWebView2EnvironmentOptions8_Impl for CoreWebView2EnvironmentOptions_Impl {
    #[allow(clippy::not_unsafe_ptr_arg_deref)]
    fn ScrollBarStyle(&self, value: *mut COREWEBVIEW2_SCROLLBAR_STYLE) -> windows_core::Result<()> {
        unsafe {
            let value = value.as_mut().ok_or(Error::from(E_POINTER))?;
            *value = self.scroll_bar_style()
        };
        Ok(())
    }

    fn SetScrollBarStyle(&self, value: COREWEBVIEW2_SCROLLBAR_STYLE) -> windows_core::Result<()> {
        unsafe {
            self.set_scroll_bar_style(value);
        }
        Ok(())
    }
}

#[implement(ICoreWebView2CustomSchemeRegistration)]
pub struct CoreWebView2CustomSchemeRegistration {
    scheme_name: String,
    treat_as_secure: UnsafeCell<bool>,
    allowed_origins: UnsafeCell<Vec<String>>,
    has_authority_component: UnsafeCell<bool>,
}

impl CoreWebView2CustomSchemeRegistration {
    pub fn new(scheme_name: String) -> Self {
        Self {
            scheme_name,
            treat_as_secure: false.into(),
            allowed_origins: Vec::new().into(),
            has_authority_component: false.into(),
        }
    }

    /// Equivalent to `ICoreWebView2CustomSchemeRegistration::SchemeName` without extra memory
    /// copies or type conversions.
    pub fn scheme_name(&self) -> &str {
        self.scheme_name.as_str()
    }

    /// Equivalent to `ICoreWebView2CustomSchemeRegistration::TreatAsSecure` without extra memory
    /// copies or type conversions.
    ///
    /// # Safety
    ///
    /// This method reads from the same [`UnsafeCell<bool>`] as the COM method, but it does not
    /// write to a mutable pointer for the result.
    pub unsafe fn treat_as_secure(&self) -> bool {
        *self.treat_as_secure.get()
    }

    /// Equivalent to `ICoreWebView2CustomSchemeRegistration::SetTreatAsSecure` without extra
    /// memory copies or type conversions.
    ///
    /// # Safety
    ///
    /// This method writes to the same [`UnsafeCell<bool>`] as the COM method. It takes an
    /// immutable reference to `self` so that it can be reused in the COM method.
    pub unsafe fn set_treat_as_secure(&self, value: bool) {
        *self.treat_as_secure.get() = value;
    }

    /// Equivalent to `ICoreWebView2CustomSchemeRegistration::GetAllowedOrigins` without extra
    /// memory copies or type conversions.
    ///
    /// # Safety
    ///
    /// This method reads from the same [`UnsafeCell<Vec<>>`] as the COM method, but it does not
    /// allocate or write to a mutable pointer for the result.
    pub unsafe fn allowed_origins(&self) -> Vec<String> {
        (*self.allowed_origins.get()).clone()
    }

    /// Equivalent to `ICoreWebView2CustomSchemeRegistration::SetAllowedOrigins` without extra
    /// memory copies or type conversions.
    ///
    /// # Safety
    ///
    /// This method writes to the same [`UnsafeCell<Vec<>>`] as the COM method. It takes an
    /// immutable reference to `self` for consistency with the other public set methods, however
    /// the COM method implementation does not actually reuse it.
    pub unsafe fn set_allowed_origins(&self, value: Vec<String>) {
        *self.allowed_origins.get() = value;
    }

    /// Equivalent to `ICoreWebView2CustomSchemeRegistration::HasAuthorityComponent` without extra
    /// memory copies or type conversions.
    ///
    /// # Safety
    ///
    /// This method reads from the same [`UnsafeCell<bool>`] as the COM method, but it does not
    /// write to a mutable pointer for the result.
    pub unsafe fn has_authority_component(&self) -> bool {
        *self.has_authority_component.get()
    }

    /// Equivalent to `ICoreWebView2CustomSchemeRegistration::SetHasAuthorityComponent` without
    /// extra memory copies or type conversions.
    ///
    /// # Safety
    ///
    /// This method writes to the same [`UnsafeCell<bool>`] as the COM method. It takes an
    /// immutable reference to `self` so that it can be reused in the COM method.
    pub unsafe fn set_has_authority_component(&self, value: bool) {
        *self.has_authority_component.get() = value;
    }
}

#[allow(clippy::not_unsafe_ptr_arg_deref)]
impl ICoreWebView2CustomSchemeRegistration_Impl for CoreWebView2CustomSchemeRegistration_Impl {
    fn SchemeName(&self, result: *mut PWSTR) -> Result<()> {
        if result.is_null() {
            E_POINTER.ok()
        } else {
            unsafe { *result = pwstr_from_str(&self.scheme_name) };
            Ok(())
        }
    }

    fn TreatAsSecure(&self, result: *mut BOOL) -> Result<()> {
        if result.is_null() {
            E_POINTER.ok()
        } else {
            unsafe { *result = self.treat_as_secure().into() };
            Ok(())
        }
    }

    fn SetTreatAsSecure(&self, value: BOOL) -> Result<()> {
        unsafe {
            self.set_treat_as_secure(value.into());
        }
        Ok(())
    }

    fn GetAllowedOrigins(&self, count: *mut u32, results: *mut *mut PWSTR) -> Result<()> {
        unsafe {
            let allowed_origins = &*self.allowed_origins.get();
            *count = allowed_origins
                .len()
                .try_into()
                .map_err(|_| Error::from(E_UNEXPECTED))?;
            if !allowed_origins.is_empty() {
                *results = CoTaskMemAlloc(mem::size_of::<*mut PWSTR>() * (*allowed_origins).len())
                    as *mut _;
                let results = ptr::slice_from_raw_parts_mut(*results, allowed_origins.len());
                for (i, scheme) in allowed_origins.iter().enumerate() {
                    (*results)[i] = pwstr_from_str(scheme);
                }
            } else {
                *results = ptr::null_mut();
            }
        }
        Ok(())
    }

    fn SetAllowedOrigins(&self, count: u32, values: *const PCWSTR) -> Result<()> {
        unsafe {
            let count = count.try_into().map_err(|_| Error::from(E_UNEXPECTED))?;
            let allowed_origins = &mut *self.allowed_origins.get();
            allowed_origins.clear();
            allowed_origins.reserve_exact(count);
            let values = &*ptr::slice_from_raw_parts(values, count);
            for origin in values.iter() {
                allowed_origins.push(string_from_pcwstr(origin));
            }
        }
        Ok(())
    }

    fn HasAuthorityComponent(&self, result: *mut BOOL) -> Result<()> {
        if result.is_null() {
            E_POINTER.ok()
        } else {
            unsafe { *result = self.has_authority_component().into() };
            Ok(())
        }
    }

    fn SetHasAuthorityComponent(&self, value: BOOL) -> Result<()> {
        unsafe {
            self.set_has_authority_component(value.into());
        }
        Ok(())
    }
}

#[cfg(test)]
mod test {
    use std::{collections::BTreeSet, ptr};

    use regex::Regex;
    use windows::Win32::System::Com::CoTaskMemFree;
    use windows_core::w;

    use webview2_com_sys::declared_interfaces;

    use crate::{
        pwstr::take_pwstr,
        Microsoft::Web::WebView2::Win32::{
            ICoreWebView2EnvironmentOptions, CORE_WEBVIEW_TARGET_PRODUCT_VERSION,
        },
    };

    use super::*;

    #[test]
    fn all_implemented() {
        let contents = include_str!("options.rs");
        let pattern =
            Regex::new(r#"(ICoreWebView2EnvironmentOptions[0-9]*)"#).expect("valid regex");
        let implemented: BTreeSet<&str> = contents
            .lines()
            .filter_map(|line| pattern.captures(line))
            .filter_map(|captures| captures.get(1))
            .map(|match_1| match_1.as_str())
            .collect();
        let all_declared_options = declared_interfaces::all_declared_options();
        let missing: Vec<_> = all_declared_options
            .iter()
            .filter_map(|name| {
                if implemented.contains(name) {
                    None
                } else {
                    Some(name.to_string())
                }
            })
            .collect();
        let extra: Vec<_> = implemented
            .iter()
            .filter_map(|name| {
                if all_declared_options.contains(name) {
                    None
                } else {
                    Some(name.to_string())
                }
            })
            .collect();
        assert!(
            missing.is_empty() && extra.is_empty(),
            "missing: {missing:?}\nextra: {extra:?}"
        );
    }

    #[test]
    fn additional_arguments() {
        let options: ICoreWebView2EnvironmentOptions =
            CoreWebView2EnvironmentOptions::default().into();
        unsafe { options.SetAdditionalBrowserArguments(w!("FakeArguments")) }.unwrap();
        let mut result = PWSTR(ptr::null_mut());
        unsafe { options.AdditionalBrowserArguments(&mut result) }.unwrap();
        let result = take_pwstr(result);
        assert_eq!(&result, "FakeArguments");
    }

    #[test]
    fn override_language() {
        let options: ICoreWebView2EnvironmentOptions =
            CoreWebView2EnvironmentOptions::default().into();
        unsafe { options.SetLanguage(w!("FakeLanguage")) }.unwrap();
        let mut result = PWSTR(ptr::null_mut::<u16>());
        unsafe { options.Language(&mut result) }.unwrap();
        let result = take_pwstr(result);
        assert_eq!(&result, "FakeLanguage");
    }

    #[test]
    fn default_version() {
        let options: ICoreWebView2EnvironmentOptions =
            CoreWebView2EnvironmentOptions::default().into();
        let mut result = PWSTR(ptr::null_mut::<u16>());
        unsafe { options.TargetCompatibleBrowserVersion(&mut result) }.unwrap();
        let result = take_pwstr(result);
        assert_eq!(
            result,
            unsafe { CORE_WEBVIEW_TARGET_PRODUCT_VERSION.to_string() }.unwrap()
        );
    }

    #[test]
    fn override_version() {
        assert_ne!(
            "FakeVersion",
            unsafe { CORE_WEBVIEW_TARGET_PRODUCT_VERSION.to_string() }
                .unwrap()
                .as_str()
        );
        let options: ICoreWebView2EnvironmentOptions =
            CoreWebView2EnvironmentOptions::default().into();
        unsafe { options.SetTargetCompatibleBrowserVersion(w!("FakeVersion")) }.unwrap();
        let mut result = PWSTR(ptr::null_mut::<u16>());
        unsafe { options.TargetCompatibleBrowserVersion(&mut result) }.unwrap();
        let result = take_pwstr(result);
        assert_eq!(&result, "FakeVersion");
    }

    #[test]
    fn default_allow_sso() {
        let options: ICoreWebView2EnvironmentOptions =
            CoreWebView2EnvironmentOptions::default().into();
        let mut result = BOOL(1);
        unsafe { options.AllowSingleSignOnUsingOSPrimaryAccount(&mut result) }.unwrap();
        assert_eq!(result.0, 0);
    }

    #[test]
    fn override_allow_sso() {
        let options: ICoreWebView2EnvironmentOptions =
            CoreWebView2EnvironmentOptions::default().into();
        unsafe { options.SetAllowSingleSignOnUsingOSPrimaryAccount(BOOL(1)) }.unwrap();
        let mut result = BOOL(0);
        unsafe { options.AllowSingleSignOnUsingOSPrimaryAccount(&mut result) }.unwrap();
        assert_eq!(result.0, 1);
    }

    #[test]
    fn default_exclusive_data_folder() {
        let options: ICoreWebView2EnvironmentOptions2 =
            CoreWebView2EnvironmentOptions::default().into();
        let mut result = BOOL(1);
        unsafe { options.ExclusiveUserDataFolderAccess(&mut result) }.unwrap();
        assert_eq!(result.0, 0);
    }

    #[test]
    fn override_exclusive_data_folder() {
        let options: ICoreWebView2EnvironmentOptions2 =
            CoreWebView2EnvironmentOptions::default().into();
        unsafe { options.SetExclusiveUserDataFolderAccess(BOOL(1)) }.unwrap();
        let mut result = BOOL(0);
        unsafe { options.ExclusiveUserDataFolderAccess(&mut result) }.unwrap();
        assert_eq!(result.0, 1);
    }

    #[test]
    fn default_custom_crash_reporting() {
        let options: ICoreWebView2EnvironmentOptions3 =
            CoreWebView2EnvironmentOptions::default().into();
        let mut result = BOOL(1);
        unsafe { options.IsCustomCrashReportingEnabled(&mut result) }.unwrap();
        assert_eq!(result.0, 0);
    }

    #[test]
    fn override_custom_crash_reporting() {
        let options: ICoreWebView2EnvironmentOptions3 =
            CoreWebView2EnvironmentOptions::default().into();
        unsafe { options.SetIsCustomCrashReportingEnabled(BOOL(1)) }.unwrap();
        let mut result = BOOL(0);
        unsafe { options.IsCustomCrashReportingEnabled(&mut result) }.unwrap();
        assert_eq!(result.0, 1);
    }

    #[test]
    fn default_scheme_registrations() {
        let options: IFixedEnvironmentOptions4 = CoreWebView2EnvironmentOptions::default().into();
        let mut count = 1;
        let mut scheme_registrations = ptr::null_mut();
        assert!(unsafe {
            options.GetCustomSchemeRegistrations(&mut count, &mut scheme_registrations)
        }
        .is_ok());
        assert_eq!(0, count);
        assert_eq!(ptr::null_mut(), scheme_registrations);
    }

    #[test]
    fn override_scheme_registrations() {
        let options: IFixedEnvironmentOptions4 = CoreWebView2EnvironmentOptions::default().into();
        let scheme: ICoreWebView2CustomSchemeRegistration =
            CoreWebView2CustomSchemeRegistration::new(String::new()).into();
        assert!(
            unsafe { options.SetCustomSchemeRegistrations(1, &[scheme.as_raw()] as *const _) }
                .is_ok()
        );
        let mut count = 0;
        let mut scheme_registrations = ptr::null_mut();
        assert!(unsafe {
            options.GetCustomSchemeRegistrations(&mut count, &mut scheme_registrations)
        }
        .is_ok());
        assert_eq!(1, count);
        unsafe {
            let scheme_registration =
                ICoreWebView2CustomSchemeRegistration::from_raw(*scheme_registrations);
            assert_eq!(scheme.as_raw(), scheme_registration.as_raw());
            CoTaskMemFree(Some(scheme_registrations as *const _));
        }
    }

    #[test]
    fn scheme_name() {
        const SCHEME_NAME: &str = "custom";
        let scheme: ICoreWebView2CustomSchemeRegistration =
            CoreWebView2CustomSchemeRegistration::new(SCHEME_NAME.to_string()).into();
        let mut result = PWSTR(ptr::null_mut::<u16>());
        unsafe { scheme.SchemeName(&mut result) }.unwrap();
        let result = take_pwstr(result);
        assert_eq!(result, SCHEME_NAME);
    }

    #[test]
    fn default_treat_as_secure() {
        let scheme: ICoreWebView2CustomSchemeRegistration =
            CoreWebView2CustomSchemeRegistration::new(String::new()).into();
        let mut result = BOOL(1);
        unsafe { scheme.TreatAsSecure(&mut result) }.unwrap();
        assert_eq!(result.0, 0);
    }

    #[test]
    fn override_treat_as_secure() {
        let scheme: ICoreWebView2CustomSchemeRegistration =
            CoreWebView2CustomSchemeRegistration::new(String::new()).into();
        unsafe { scheme.SetTreatAsSecure(BOOL(1)) }.unwrap();
        let mut result = BOOL(0);
        unsafe { scheme.TreatAsSecure(&mut result) }.unwrap();
        assert_eq!(result.0, 1);
    }

    #[test]
    fn default_allowed_origins() {
        let scheme: ICoreWebView2CustomSchemeRegistration =
            CoreWebView2CustomSchemeRegistration::new(String::new()).into();
        let mut count = 1_u32;
        let mut origin = pwstr_from_str("origin");
        let mut results = &mut origin as *mut _;
        let _ = take_pwstr(origin);
        unsafe { scheme.GetAllowedOrigins(&mut count, &mut results) }.unwrap();
        assert_eq!(count, 0);
        assert_eq!(results, ptr::null_mut());
    }

    #[test]
    fn override_allowed_origins() {
        const ORIGIN: &str = "origin";
        let scheme: ICoreWebView2CustomSchemeRegistration =
            CoreWebView2CustomSchemeRegistration::new(String::new()).into();
        let origin = pwstr_from_str(ORIGIN);
        unsafe { scheme.SetAllowedOrigins(1, &PCWSTR(origin.0)) }.unwrap();

        let mut count = 0_u32;
        let mut results = ptr::null_mut();
        unsafe { scheme.GetAllowedOrigins(&mut count, &mut results) }.unwrap();
        assert_eq!(count, 1);

        assert_ne!(results, ptr::null_mut());
        let mut origin = PWSTR(ptr::null_mut());
        unsafe { mem::swap(&mut origin, &mut *results) };
        let origin = take_pwstr(origin);
        unsafe { CoTaskMemFree(Some(mem::transmute(results))) };
        assert_eq!(origin, ORIGIN);
    }

    #[test]
    fn default_has_authority_component() {
        let scheme: ICoreWebView2CustomSchemeRegistration =
            CoreWebView2CustomSchemeRegistration::new(String::new()).into();
        let mut result = BOOL(1);
        unsafe { scheme.HasAuthorityComponent(&mut result) }.unwrap();
        assert_eq!(result.0, 0);
    }

    #[test]
    fn override_has_authority_component() {
        let scheme: ICoreWebView2CustomSchemeRegistration =
            CoreWebView2CustomSchemeRegistration::new(String::new()).into();
        unsafe { scheme.SetHasAuthorityComponent(BOOL(1)) }.unwrap();
        let mut result = BOOL(0);
        unsafe { scheme.HasAuthorityComponent(&mut result) }.unwrap();
        assert_eq!(result.0, 1);
    }
}