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/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

use super::{AsCodeType, CodeType};
use crate::backend::{Literal, Type};
use crate::ComponentInterface;

#[derive(Debug)]
pub struct OptionalCodeType {
    inner: Type,
}

impl OptionalCodeType {
    pub fn new(inner: Type) -> Self {
        Self { inner }
    }
    fn inner(&self) -> &Type {
        &self.inner
    }
}

impl CodeType for OptionalCodeType {
    fn type_label(&self, ci: &ComponentInterface) -> String {
        format!(
            "{}?",
            super::KotlinCodeOracle.find(self.inner()).type_label(ci)
        )
    }

    fn canonical_name(&self) -> String {
        format!(
            "Optional{}",
            super::KotlinCodeOracle.find(self.inner()).canonical_name()
        )
    }

    fn literal(&self, literal: &Literal, ci: &ComponentInterface) -> String {
        match literal {
            Literal::None => "null".into(),
            Literal::Some { inner } => super::KotlinCodeOracle.find(&self.inner).literal(inner, ci),
            _ => panic!("Invalid literal for Optional type: {literal:?}"),
        }
    }
}

#[derive(Debug)]
pub struct SequenceCodeType {
    inner: Type,
}

impl SequenceCodeType {
    pub fn new(inner: Type) -> Self {
        Self { inner }
    }
    fn inner(&self) -> &Type {
        &self.inner
    }
}

impl CodeType for SequenceCodeType {
    fn type_label(&self, ci: &ComponentInterface) -> String {
        format!(
            "List<{}>",
            super::KotlinCodeOracle.find(self.inner()).type_label(ci)
        )
    }

    fn canonical_name(&self) -> String {
        format!(
            "Sequence{}",
            super::KotlinCodeOracle.find(self.inner()).canonical_name()
        )
    }

    fn literal(&self, literal: &Literal, _ci: &ComponentInterface) -> String {
        match literal {
            Literal::EmptySequence => "listOf()".into(),
            _ => panic!("Invalid literal for List type: {literal:?}"),
        }
    }
}

#[derive(Debug)]
pub struct MapCodeType {
    key: Type,
    value: Type,
}

impl MapCodeType {
    pub fn new(key: Type, value: Type) -> Self {
        Self { key, value }
    }

    fn key(&self) -> &Type {
        &self.key
    }

    fn value(&self) -> &Type {
        &self.value
    }
}

impl CodeType for MapCodeType {
    fn type_label(&self, ci: &ComponentInterface) -> String {
        format!(
            "Map<{}, {}>",
            super::KotlinCodeOracle.find(self.key()).type_label(ci),
            super::KotlinCodeOracle.find(self.value()).type_label(ci),
        )
    }

    fn canonical_name(&self) -> String {
        format!(
            "Map{}{}",
            self.key().as_codetype().canonical_name(),
            self.value().as_codetype().canonical_name(),
        )
    }

    fn literal(&self, literal: &Literal, _ci: &ComponentInterface) -> String {
        match literal {
            Literal::EmptyMap => "mapOf()".into(),
            _ => panic!("Invalid literal for Map type: {literal:?}"),
        }
    }
}