use derive_builder::Builder;
use sqlx::query_as;
use uuid::Uuid;

use crate::client::AppDbClient;

#[derive(Clone, Debug)]
pub struct Base {
    pub id: Uuid,
    pub name: String,
    pub url: String,
    pub owner_id: Uuid,
    pub user_role_prefix: String,
}

impl Base {
    pub fn insertable_builder() -> InsertableBaseBuilder {
        InsertableBaseBuilder::default()
    }

    pub fn with_id(id: Uuid) -> WithIdQuery {
        WithIdQuery { id }
    }

    pub fn with_permission_in<I: IntoIterator<Item = &'static str>>(
        perms: I,
    ) -> WithPermissionInQueryPartial {
        let perms: Vec<String> = perms.into_iter().map(ToOwned::to_owned).collect();
        WithPermissionInQueryPartial { perms }
    }
}

pub struct WithPermissionInQueryPartial {
    perms: Vec<String>,
}

impl WithPermissionInQueryPartial {
    pub fn for_user(self, user_id: Uuid) -> WithPermissionInQuery {
        WithPermissionInQuery {
            perms: self.perms,
            user_id,
        }
    }
}

pub struct WithPermissionInQuery {
    perms: Vec<String>,
    user_id: Uuid,
}

impl WithPermissionInQuery {
    pub async fn fetch_all(self, app_db: &mut AppDbClient) -> Result<Vec<Base>, sqlx::Error> {
        query_as!(
            Base,
            "
select bases.*
from bases inner join base_user_perms as p
    on p.base_id = bases.id
where p.user_id = $1 and perm = ANY($2)
",
            self.user_id,
            self.perms.as_slice(),
        )
        .fetch_all(&mut *app_db.conn)
        .await
    }
}

pub struct WithIdQuery {
    id: Uuid,
}

impl WithIdQuery {
    pub async fn fetch_optional(
        self,
        app_db: &mut AppDbClient,
    ) -> Result<Option<Base>, sqlx::Error> {
        query_as!(Base, "select * from bases where id = $1", &self.id)
            .fetch_optional(&mut *app_db.conn)
            .await
    }

    pub async fn fetch_one(self, app_db: &mut AppDbClient) -> Result<Base, sqlx::Error> {
        query_as!(Base, "select * from bases where id = $1", &self.id)
            .fetch_one(&mut *app_db.conn)
            .await
    }
}

#[derive(Builder)]
pub struct InsertableBase {
    url: String,
    owner_id: Uuid,
}

impl InsertableBase {
    pub async fn insert(self, app_db: &mut AppDbClient) -> Result<Base, sqlx::Error> {
        query_as!(
            Base,
            "
insert into bases
(id, url, owner_id)
values ($1, $2, $3)
returning *
",
            Uuid::now_v7(),
            self.url,
            self.owner_id
        )
        .fetch_one(&mut *app_db.conn)
        .await
    }
}