use crate::icon::Icon;

/// Application metadata for the [`PredefinedMenuItem::about`].
#[derive(Debug, Clone, Default)]
pub struct AboutMetadata {
    /// Sets the application name.
    pub name: Option<String>,
    /// The application version.
    pub version: Option<String>,
    /// The short version, e.g. "1.0".
    ///
    /// ## Platform-specific
    ///
    /// - **Windows / Linux:** Appended to the end of `version` in parentheses.
    pub short_version: Option<String>,
    /// The authors of the application.
    ///
    /// ## Platform-specific
    ///
    /// - **macOS:** Unsupported.
    pub authors: Option<Vec<String>>,
    /// Application comments.
    ///
    /// ## Platform-specific
    ///
    /// - **macOS:** Unsupported.
    pub comments: Option<String>,
    /// The copyright of the application.
    pub copyright: Option<String>,
    /// The license of the application.
    ///
    /// ## Platform-specific
    ///
    /// - **macOS:** Unsupported.
    pub license: Option<String>,
    /// The application website.
    ///
    /// ## Platform-specific
    ///
    /// - **macOS:** Unsupported.
    pub website: Option<String>,
    /// The website label.
    ///
    /// ## Platform-specific
    ///
    /// - **macOS:** Unsupported.
    pub website_label: Option<String>,
    /// The credits.
    ///
    /// ## Platform-specific
    ///
    /// - **Windows / Linux:** Unsupported.
    pub credits: Option<String>,
    /// The application icon.
    ///
    /// ## Platform-specific
    ///
    /// - **Windows:** Unsupported.
    pub icon: Option<Icon>,
}

impl AboutMetadata {
    #[allow(unused)]
    pub(crate) fn full_version(&self) -> Option<String> {
        Some(format!(
            "{}{}",
            (self.version.as_ref())?,
            (self.short_version.as_ref())
                .map(|v| format!(" ({v})"))
                .unwrap_or_default()
        ))
    }
}

/// A builder type for [`AboutMetadata`].
#[derive(Clone, Debug, Default)]
pub struct AboutMetadataBuilder(AboutMetadata);

impl AboutMetadataBuilder {
    pub fn new() -> Self {
        Default::default()
    }

    /// Sets the application name.
    pub fn name<S: Into<String>>(mut self, name: Option<S>) -> Self {
        self.0.name = name.map(|s| s.into());
        self
    }
    /// Sets the application version.
    pub fn version<S: Into<String>>(mut self, version: Option<S>) -> Self {
        self.0.version = version.map(|s| s.into());
        self
    }
    /// Sets the short version, e.g. "1.0".
    ///
    /// ## Platform-specific
    ///
    /// - **Windows / Linux:** Appended to the end of `version` in parentheses.
    pub fn short_version<S: Into<String>>(mut self, short_version: Option<S>) -> Self {
        self.0.short_version = short_version.map(|s| s.into());
        self
    }
    /// Sets the authors of the application.
    ///
    /// ## Platform-specific
    ///
    /// - **macOS:** Unsupported.
    pub fn authors(mut self, authors: Option<Vec<String>>) -> Self {
        self.0.authors = authors;
        self
    }
    /// Application comments.
    ///
    /// ## Platform-specific
    ///
    /// - **macOS:** Unsupported.
    pub fn comments<S: Into<String>>(mut self, comments: Option<S>) -> Self {
        self.0.comments = comments.map(|s| s.into());
        self
    }
    /// Sets the copyright of the application.
    pub fn copyright<S: Into<String>>(mut self, copyright: Option<S>) -> Self {
        self.0.copyright = copyright.map(|s| s.into());
        self
    }
    /// Sets the license of the application.
    ///
    /// ## Platform-specific
    ///
    /// - **macOS:** Unsupported.
    pub fn license<S: Into<String>>(mut self, license: Option<S>) -> Self {
        self.0.license = license.map(|s| s.into());
        self
    }
    /// Sets the application website.
    ///
    /// ## Platform-specific
    ///
    /// - **macOS:** Unsupported.
    pub fn website<S: Into<String>>(mut self, website: Option<S>) -> Self {
        self.0.website = website.map(|s| s.into());
        self
    }
    /// Sets the website label.
    ///
    /// ## Platform-specific
    ///
    /// - **macOS:** Unsupported.
    pub fn website_label<S: Into<String>>(mut self, website_label: Option<S>) -> Self {
        self.0.website_label = website_label.map(|s| s.into());
        self
    }
    /// Sets the credits.
    ///
    /// ## Platform-specific
    ///
    /// - **Windows / Linux:** Unsupported.
    pub fn credits<S: Into<String>>(mut self, credits: Option<S>) -> Self {
        self.0.credits = credits.map(|s| s.into());
        self
    }
    /// Sets the application icon.
    ///
    /// ## Platform-specific
    ///
    /// - **Windows:** Unsupported.
    pub fn icon(mut self, icon: Option<Icon>) -> Self {
        self.0.icon = icon;
        self
    }

    /// Construct the final [`AboutMetadata`]
    pub fn build(self) -> AboutMetadata {
        self.0
    }
}