use oiseau::cache::Cache;
use crate::model::{auth::User, journals::Note, permissions::FinePermission, Error, Result};
use crate::{auto_method, DataManager};
use oiseau::{PostgresRow, execute, get, query_rows, params};

impl DataManager {
    /// Get a [`Note`] from an SQL row.
    pub(crate) fn get_note_from_row(x: &PostgresRow) -> Note {
        Note {
            id: get!(x->0(i64)) as usize,
            created: get!(x->1(i64)) as usize,
            owner: get!(x->2(i64)) as usize,
            title: get!(x->3(String)),
            journal: get!(x->4(i64)) as usize,
            content: get!(x->5(String)),
            edited: get!(x->6(i64)) as usize,
        }
    }

    auto_method!(get_note_by_id(usize as i64)@get_note_from_row -> "SELECT * FROM notes WHERE id = $1" --name="note" --returns=Note --cache-key-tmpl="atto.note:{}");

    /// Get all notes by journal.
    ///
    /// # Arguments
    /// * `id` - the ID of the journal to fetch notes for
    pub async fn get_notes_by_journal(&self, id: usize) -> Result<Vec<Note>> {
        let conn = match self.0.connect().await {
            Ok(c) => c,
            Err(e) => return Err(Error::DatabaseConnection(e.to_string())),
        };

        let res = query_rows!(
            &conn,
            "SELECT * FROM notes WHERE journal = $1 ORDER BY edited",
            &[&(id as i64)],
            |x| { Self::get_note_from_row(x) }
        );

        if res.is_err() {
            return Err(Error::GeneralNotFound("note".to_string()));
        }

        Ok(res.unwrap())
    }

    /// Create a new note in the database.
    ///
    /// # Arguments
    /// * `data` - a mock [`Note`] object to insert
    pub async fn create_note(&self, data: Note) -> Result<Note> {
        // check values
        if data.title.len() < 2 {
            return Err(Error::DataTooShort("title".to_string()));
        } else if data.title.len() > 64 {
            return Err(Error::DataTooLong("title".to_string()));
        }

        if data.content.len() < 2 {
            return Err(Error::DataTooShort("content".to_string()));
        } else if data.content.len() > 16384 {
            return Err(Error::DataTooLong("content".to_string()));
        }

        // ...
        let conn = match self.0.connect().await {
            Ok(c) => c,
            Err(e) => return Err(Error::DatabaseConnection(e.to_string())),
        };

        let res = execute!(
            &conn,
            "INSERT INTO notes VALUES ($1, $2, $3, $4, $5, $6, $7)",
            params![
                &(data.id as i64),
                &(data.created as i64),
                &(data.owner as i64),
                &data.title,
                &(data.journal as i64),
                &data.content,
                &(data.edited as i64),
            ]
        );

        if let Err(e) = res {
            return Err(Error::DatabaseError(e.to_string()));
        }

        Ok(data)
    }

    pub async fn delete_note(&self, id: usize, user: &User) -> Result<()> {
        let note = self.get_note_by_id(id).await?;

        // check user permission
        if user.id != note.owner && !user.permissions.check(FinePermission::MANAGE_NOTES) {
            return Err(Error::NotAllowed);
        }

        // ...
        let conn = match self.0.connect().await {
            Ok(c) => c,
            Err(e) => return Err(Error::DatabaseConnection(e.to_string())),
        };

        let res = execute!(&conn, "DELETE FROM notes WHERE id = $1", &[&(id as i64)]);

        if let Err(e) = res {
            return Err(Error::DatabaseError(e.to_string()));
        }

        // delete notes
        let res = execute!(&conn, "DELETE FROM notes WHERE note = $1", &[&(id as i64)]);

        if let Err(e) = res {
            return Err(Error::DatabaseError(e.to_string()));
        }

        // ...
        self.0.1.remove(format!("atto.note:{}", id)).await;
        Ok(())
    }

    auto_method!(update_note_title(&str)@get_note_by_id:MANAGE_NOTES -> "UPDATE notes SET title = $1 WHERE id = $2" --cache-key-tmpl="atto.note:{}");
}