/*
    This file is part of jellything (https://codeberg.org/metamuffin/jellything)
    which is licensed under the GNU Affero General Public License (version 3); see /COPYING.
    Copyright (C) 2026 metamuffin <metamuffin.org>
*/

use jellycommon::{
    jellyobject::{Object, ObjectBuffer, Tag, TypedTag, ValueStore},
    *,
};
use std::marker::PhantomData;

pub struct SourceRanks {
    list: Vec<Tag>,
}

#[derive(Clone, Copy)]
pub struct ImportSource<'a> {
    pub tag: Tag,
    pub ranks: &'a SourceRanks,
}

pub trait ObjectImportSourceExt {
    fn insert_s<T: ValueStore>(&self, is: ImportSource, key: TypedTag<T>, value: T)
    -> ObjectBuffer;
}
impl<'a> ObjectImportSourceExt for Object<'a> {
    fn insert_s<T: ValueStore>(
        &self,
        is: ImportSource,
        key: TypedTag<T>,
        value: T,
    ) -> ObjectBuffer {
        let ms = self.get(NO_METASOURCE).unwrap_or_default();
        let ms_key = TypedTag::<Tag>(key.0, PhantomData);

        if let Some(current_source) = ms.get(ms_key) {
            if !is.ranks.compare(key.0, current_source, is.tag) {
                return self.dump();
            }
        }

        self.insert(key, value)
            .as_object()
            .update(NO_METASOURCE, |ms| ms.insert(ms_key, is.tag))
    }
}

impl SourceRanks {
    pub fn new() -> Self {
        Self {
            list: [
                MSOURCE_EXPLICIT,
                MSOURCE_TRAKT,
                MSOURCE_MUSICBRAINZ,
                MSOURCE_MEDIA,
                MSOURCE_TAGS,
                MSOURCE_IMAGE_ATT,
                MSOURCE_TMDB,
                MSOURCE_WIKIDATA,
                MSOURCE_VGMDB,
                MSOURCE_ACOUSTID,
                MSOURCE_INFOJSON,
                MSOURCE_OMDB,
            ]
            .to_vec(),
        }
    }
    pub fn compare(&self, key: Tag, old: Tag, new: Tag) -> bool {
        let _ = key;

        let old_index = self
            .list
            .iter()
            .position(|e| *e == old)
            .unwrap_or(usize::MAX);
        let new_index = self
            .list
            .iter()
            .position(|e| *e == new)
            .unwrap_or(usize::MAX);

        new_index <= old_index
    }
}