#![allow(dead_code)]

use clap::Parser;
use std::path::Path;

use actix_web::http::StatusCode;
use byte_unit::{Byte, ByteUnit};
use meilisearch_auth::AuthController;
use meilisearch_http::setup_meilisearch;
use meilisearch_lib::options::{IndexerOpts, MaxMemory};
use once_cell::sync::Lazy;
use serde_json::Value;
use tempfile::TempDir;

use meilisearch_http::option::Opt;

use super::index::Index;
use super::service::Service;

pub struct Server {
    pub service: Service,
    // hold ownership to the tempdir while we use the server instance.
    _dir: Option<TempDir>,
}

pub static TEST_TEMP_DIR: Lazy<TempDir> = Lazy::new(|| TempDir::new().unwrap());

impl Server {
    pub async fn new() -> Self {
        let dir = TempDir::new().unwrap();

        if cfg!(windows) {
            std::env::set_var("TMP", TEST_TEMP_DIR.path());
        } else {
            std::env::set_var("TMPDIR", TEST_TEMP_DIR.path());
        }

        let options = default_settings(dir.path());

        let meilisearch = setup_meilisearch(&options).unwrap();
        let auth = AuthController::new(&options.db_path, &options.master_key).unwrap();
        let service = Service {
            meilisearch,
            auth,
            options,
            api_key: None,
        };

        Server {
            service,
            _dir: Some(dir),
        }
    }

    pub async fn new_auth() -> Self {
        let dir = TempDir::new().unwrap();

        if cfg!(windows) {
            std::env::set_var("TMP", TEST_TEMP_DIR.path());
        } else {
            std::env::set_var("TMPDIR", TEST_TEMP_DIR.path());
        }

        let mut options = default_settings(dir.path());
        options.master_key = Some("MASTER_KEY".to_string());

        let meilisearch = setup_meilisearch(&options).unwrap();
        let auth = AuthController::new(&options.db_path, &options.master_key).unwrap();
        let service = Service {
            meilisearch,
            auth,
            options,
            api_key: None,
        };

        Server {
            service,
            _dir: Some(dir),
        }
    }

    pub async fn new_with_options(options: Opt) -> Self {
        let meilisearch = setup_meilisearch(&options).unwrap();
        let auth = AuthController::new(&options.db_path, &options.master_key).unwrap();
        let service = Service {
            meilisearch,
            auth,
            options,
            api_key: None,
        };

        Server {
            service,
            _dir: None,
        }
    }

    /// Returns a view to an index. There is no guarantee that the index exists.
    pub fn index(&self, uid: impl AsRef<str>) -> Index<'_> {
        Index {
            uid: uid.as_ref().to_string(),
            service: &self.service,
        }
    }

    pub async fn list_indexes(&self) -> (Value, StatusCode) {
        self.service.get("/indexes").await
    }

    pub async fn version(&self) -> (Value, StatusCode) {
        self.service.get("/version").await
    }

    pub async fn stats(&self) -> (Value, StatusCode) {
        self.service.get("/stats").await
    }

    pub async fn tasks(&self) -> (Value, StatusCode) {
        self.service.get("/tasks").await
    }

    pub async fn get_dump_status(&self, uid: &str) -> (Value, StatusCode) {
        self.service.get(format!("/dumps/{}/status", uid)).await
    }
}

pub fn default_settings(dir: impl AsRef<Path>) -> Opt {
    Opt {
        db_path: dir.as_ref().join("db"),
        dumps_dir: dir.as_ref().join("dump"),
        env: "development".to_owned(),
        #[cfg(all(not(debug_assertions), feature = "analytics"))]
        no_analytics: true,
        max_index_size: Byte::from_unit(4.0, ByteUnit::GiB).unwrap(),
        max_task_db_size: Byte::from_unit(4.0, ByteUnit::GiB).unwrap(),
        http_payload_size_limit: Byte::from_unit(10.0, ByteUnit::MiB).unwrap(),
        snapshot_dir: ".".into(),
        ..Parser::parse_from(None as Option<&str>)
    }
}