/*
SPDX-License-Identifier: MIT OR Apache-2.0
SPDX-FileCopyrightText: © 2023-2026 Bruce D'Arcus and Citum contributors
*/

//! Embedded priority templates for common citation styles.

/// Embedded APA templates.
pub mod apa;
/// Embedded Chicago author-date templates.
pub mod chicago;
/// Embedded Harvard templates.
pub mod harvard;
/// Embedded IEEE templates.
pub mod ieee;
pub mod locales;
/// Embedded numeric citation templates.
pub mod numeric;
pub mod styles;
/// Embedded Vancouver templates.
pub mod vancouver;

use crate::registry::StyleRegistry;
use crate::template::TemplateComponent;
use std::collections::HashMap;

// Re-export for original API compatibility
pub use apa::bibliography as apa_bibliography;
pub use apa::citation as apa_citation;
pub use chicago::author_date_bibliography as chicago_author_date_bibliography;
pub use chicago::author_date_citation as chicago_author_date_citation;
pub use harvard::bibliography as harvard_bibliography;
pub use harvard::citation as harvard_citation;
pub use ieee::bibliography as ieee_bibliography;
pub use ieee::citation as ieee_citation;
pub use locales::{
    EMBEDDED_LOCALE_IDS, EMBEDDED_LOCALE_OVERRIDE_IDS, get_locale_bytes, get_locale_override_bytes,
};
pub use numeric::citation as numeric_citation;
pub use styles::{
    EMBEDDED_STYLE_ALIASES, EMBEDDED_STYLE_NAMES, get_embedded_style, resolve_embedded_style_name,
};
pub use vancouver::bibliography as vancouver_bibliography;
pub use vancouver::citation as vancouver_citation;

/// Get all available embedded citation templates.
pub fn citation_templates() -> HashMap<&'static str, Vec<TemplateComponent>> {
    let mut map = HashMap::new();
    map.insert("apa", apa_citation());
    map.insert("chicago-author-date", chicago_author_date_citation());
    map.insert("vancouver", vancouver_citation());
    map.insert("ieee", ieee_citation());
    map.insert("harvard", harvard_citation());
    map.insert("numeric-citation", numeric_citation());
    map
}

/// Get all available embedded bibliography templates.
pub fn bibliography_templates() -> HashMap<&'static str, Vec<TemplateComponent>> {
    let mut map = HashMap::new();
    map.insert("apa", apa_bibliography());
    map.insert("chicago-author-date", chicago_author_date_bibliography());
    map.insert("vancouver", vancouver_bibliography());
    map.insert("ieee", ieee_bibliography());
    map.insert("harvard", harvard_bibliography());
    map
}

/// Build the default style registry from the embedded YAML data.
pub fn default_registry() -> StyleRegistry {
    StyleRegistry::load_default()
}

#[cfg(test)]
#[allow(
    clippy::unwrap_used,
    clippy::expect_used,
    clippy::panic,
    clippy::indexing_slicing,
    clippy::todo,
    clippy::unimplemented,
    clippy::unreachable,
    clippy::get_unwrap,
    reason = "Panicking is acceptable and often desired in tests."
)]
mod tests {
    use super::*;
    use crate::options::AndOptions;
    use crate::template::{
        ContributorForm, ContributorRole, DateForm, DateVariable, NumberVariable, SimpleVariable,
        TemplateComponent, WrapConfig, WrapPunctuation,
    };

    #[test]
    fn test_apa_citation_structure() {
        let template = apa_citation();
        assert_eq!(template.len(), 3);

        match &template[0] {
            TemplateComponent::Contributor(c) => {
                assert_eq!(c.contributor, ContributorRole::Author);
                assert_eq!(c.form, ContributorForm::Short);
            }
            _ => panic!("Expected Contributor"),
        }

        match &template[1] {
            TemplateComponent::Date(d) => {
                assert_eq!(d.date, DateVariable::Issued);
                assert_eq!(d.form, DateForm::Year);
            }
            _ => panic!("Expected Date"),
        }

        match &template[2] {
            TemplateComponent::Variable(v) => {
                assert_eq!(v.variable, SimpleVariable::Locator);
            }
            _ => panic!("Expected Variable (locator)"),
        }
    }

    #[test]
    fn test_apa_bibliography_structure() {
        let template = apa_bibliography();
        assert!(
            template.len() >= 6,
            "APA bibliography should have multiple components"
        );

        // Check first component is author
        match &template[0] {
            TemplateComponent::Contributor(c) => {
                assert_eq!(c.contributor, ContributorRole::Author);
            }
            _ => panic!("First component should be Contributor"),
        }

        // Check second component is date with parentheses
        match &template[1] {
            TemplateComponent::Date(d) => {
                assert_eq!(
                    d.rendering.wrap,
                    Some(WrapConfig {
                        punctuation: WrapPunctuation::Parentheses,
                        inner_prefix: None,
                        inner_suffix: None,
                    })
                );
            }
            _ => panic!("Second component should be Date"),
        }
    }

    #[test]
    fn test_vancouver_citation_is_numeric() {
        let template = vancouver_citation();
        assert_eq!(template.len(), 1);

        match &template[0] {
            TemplateComponent::Number(n) => {
                assert_eq!(n.number, NumberVariable::CitationNumber);
                assert_eq!(
                    n.rendering.wrap,
                    Some(WrapConfig {
                        punctuation: WrapPunctuation::Brackets,
                        inner_prefix: None,
                        inner_suffix: None,
                    })
                );
            }
            _ => panic!("Vancouver citation should be a Number component"),
        }
    }

    #[test]
    fn test_chicago_uses_text_and() {
        let template = chicago_author_date_citation();

        match &template[0] {
            TemplateComponent::Contributor(c) => {
                assert_eq!(c.and, Some(AndOptions::Text));
            }
            _ => panic!("Expected Contributor"),
        }
    }

    #[test]
    fn test_citation_templates_map() {
        let templates = citation_templates();
        assert!(templates.contains_key("apa"));
        assert!(templates.contains_key("chicago-author-date"));
        assert!(templates.contains_key("vancouver"));
        assert!(templates.contains_key("ieee"));
        assert!(templates.contains_key("harvard"));
        assert!(templates.contains_key("numeric-citation"));
    }

    #[test]
    fn test_bibliography_templates_map() {
        let templates = bibliography_templates();
        assert!(templates.contains_key("apa"));
        assert!(templates.contains_key("chicago-author-date"));
        assert!(templates.contains_key("vancouver"));
        assert!(templates.contains_key("ieee"));
        assert!(templates.contains_key("harvard"));
    }

    #[test]
    fn test_ieee_bibliography_has_labels() {
        let template = ieee_bibliography();

        // Find volume component and check it has "vol." prefix
        let volume = template.iter().find(
            |c| matches!(c, TemplateComponent::Number(n) if n.number == NumberVariable::Volume),
        );
        assert!(volume.is_some());

        match volume.unwrap() {
            TemplateComponent::Number(n) => {
                assert_eq!(n.rendering.prefix, Some("vol. ".to_string()));
            }
            _ => unreachable!(),
        }
    }
}
