//! Envelope compatibility between the apps (kv-ffi) and the web vault (kv-wasm), through two shared
//! fixtures in `tests/fixtures/`:
//!
//! * `native-vault.json`: made by kv-ffi (SQLite). The wasm tests (`src/wasm/tests.rs`, in Chrome)
//!   unlock it and read its items.
//! * `wasm-vault.json`: made by the real wasm package (`js/smoke.mjs`, in Node). Here kv-ffi unlocks it
//!   and reads its items.
//!
//! Both hold the replica entries in the web store's format (ciphertext only), the credentials and the
//! expected plaintext. Regenerate the native one with
//! `cargo test -p kv-wasm --test fixture -- --ignored generate_native_fixture`.
#![cfg(not(target_arch = "wasm32"))]

use std::{collections::BTreeMap, path::PathBuf, sync::Arc};

use kv_store::{SqliteStore, Store};
use kv_wasm::{
    dto::{ItemDto, ItemKindDto},
    store::WebStore,
    WebCore,
};
use serde::{Deserialize, Serialize};

#[derive(Serialize, Deserialize)]
#[serde(rename_all = "camelCase")]
struct Fixture {
    master_password: String,
    secret_key: String,
    /// Replica entries, values as UTF-8 (they are JSON or ASCII).
    entries: BTreeMap<String, String>,
    /// Expected plaintext, sorted by title.
    items: Vec<ItemDto>,
}

fn path(name: &str) -> PathBuf {
    PathBuf::from(env!("CARGO_MANIFEST_DIR")).join("tests/fixtures").join(name)
}

fn load(name: &str) -> Fixture {
    serde_json::from_slice(&std::fs::read(path(name)).unwrap()).unwrap()
}

/// Copies a native SQLite replica into the web store format.
fn sqlite_to_web(src: &SqliteStore) -> WebStore {
    let dst = WebStore::new();
    for key in ["account", "server", "session"] {
        if let Some(v) = src.get_meta(key).unwrap() {
            dst.put_meta(key, &v).unwrap();
        }
    }
    for v in src.vaults().unwrap() {
        dst.put_vault(&v).unwrap();
        for item in src.list(v.vault_id).unwrap() {
            dst.put(v.vault_id, &item).unwrap();
            for h in src.history(v.vault_id, item.record.item_id).unwrap().into_iter().rev() {
                dst.push_history(v.vault_id, item.record.item_id, &h).unwrap();
            }
        }
    }
    dst
}

/// The reverse: a web replica written into a fresh SQLite database kv-ffi can open.
fn web_to_sqlite(src: &WebStore, dst: &SqliteStore) {
    for key in ["account", "server", "session"] {
        if let Some(v) = src.get_meta(key).unwrap() {
            dst.put_meta(key, &v).unwrap();
        }
    }
    for v in src.vaults().unwrap() {
        dst.put_vault(&v).unwrap();
        for item in src.list(v.vault_id).unwrap() {
            dst.put(v.vault_id, &item).unwrap();
            for h in src.history(v.vault_id, item.record.item_id).unwrap().into_iter().rev() {
                dst.push_history(v.vault_id, item.record.item_id, &h).unwrap();
            }
        }
    }
}

fn web_store(f: &Fixture) -> WebStore {
    WebStore::load(f.entries.iter().map(|(k, v)| (k.clone(), v.as_bytes().to_vec()))).unwrap()
}

/// Items as kv-ffi sees them, sorted by title, `modified_at` included.
fn read_with_kv_ffi(f: &Fixture) -> Vec<ItemDto> {
    let dir = tempfile::tempdir().unwrap();
    let db = dir.path().join("vault.db");
    web_to_sqlite(&web_store(f), &SqliteStore::open(&db).unwrap());
    let core = kv_ffi::VaultCore::open(db.to_string_lossy().into_owned()).unwrap();
    assert!(core.is_locked());
    core.unlock(f.master_password.clone(), f.secret_key.clone()).unwrap();
    let mut out: Vec<ItemDto> = core
        .list_items()
        .unwrap()
        .into_iter()
        .map(|s| {
            let d = core.get_item(s.id).unwrap();
            ItemDto {
                id: d.id,
                kind: match d.kind {
                    kv_ffi::ItemKindDto::Login => ItemKindDto::Login,
                    kv_ffi::ItemKindDto::SecureNote => ItemKindDto::SecureNote,
                    kv_ffi::ItemKindDto::Card => ItemKindDto::Card,
                    kv_ffi::ItemKindDto::Identity => ItemKindDto::Identity,
                },
                title: d.title,
                username: d.username,
                password: d.password,
                urls: d.urls,
                totp: d.totp,
                notes: d.notes,
                favorite: d.favorite,
                tags: d.tags,
                modified_at: d.modified_at,
            }
        })
        .collect();
    out.sort_by(|a, b| a.title.cmp(&b.title));
    out
}

fn read_with_web_core(f: &Fixture) -> Vec<ItemDto> {
    let core = WebCore::new(Arc::new(web_store(f))).unwrap();
    core.unlock(&f.master_password, &f.secret_key).unwrap();
    let mut out: Vec<ItemDto> = core.list_items().unwrap().into_iter().map(|s| core.get_item(&s.id).unwrap()).collect();
    out.sort_by(|a, b| a.title.cmp(&b.title));
    out
}

fn ffi_item(title: &str, kind: kv_ffi::ItemKindDto) -> kv_ffi::ItemDto {
    kv_ffi::ItemDto {
        id: String::new(),
        kind,
        title: title.into(),
        username: None,
        password: None,
        urls: vec![],
        totp: None,
        notes: None,
        favorite: false,
        tags: vec![],
        modified_at: 0,
    }
}

#[test]
#[ignore = "writes tests/fixtures/native-vault.json"]
fn generate_native_fixture() {
    let dir = tempfile::tempdir().unwrap();
    let db = dir.path().join("vault.db");
    let pw = "native fixture master password";
    let core = kv_ffi::VaultCore::open(db.to_string_lossy().into_owned()).unwrap();
    let secret_key = core.create_account(pw.into()).unwrap();
    let bank = core
        .save_item(kv_ffi::ItemDto {
            username: Some("ana@example.com".into()),
            password: Some("first password".into()),
            urls: vec!["https://bank.example.com/login".into()],
            totp: Some("otpauth://totp/Bank:ana?secret=JBSWY3DPEHPK3PXP&issuer=Bank".into()),
            tags: vec!["finance".into(), "ünïcode ✓".into()],
            favorite: true,
            ..ffi_item("Bank", kv_ffi::ItemKindDto::Login)
        })
        .unwrap();
    // A second version, so the history entry crosses over too.
    let mut edit = core.get_item(bank.clone()).unwrap();
    edit.password = Some("second password".into());
    core.save_item(edit).unwrap();
    core.save_item(kv_ffi::ItemDto {
        notes: Some("multi\nline\nnote with emoji 🔐".into()),
        ..ffi_item("Recovery codes", kv_ffi::ItemKindDto::SecureNote)
    })
    .unwrap();
    drop(core);

    let web = sqlite_to_web(&SqliteStore::open(&db).unwrap());
    let mut f = Fixture {
        master_password: pw.into(),
        secret_key,
        entries: web.entries().into_iter().map(|(k, v)| (k, String::from_utf8(v).unwrap())).collect(),
        items: vec![],
    };
    f.items = read_with_kv_ffi(&f);
    std::fs::write(path("native-vault.json"), serde_json::to_string_pretty(&f).unwrap() + "\n").unwrap();
}

#[test]
fn native_fixture_opens_in_kv_ffi_and_web_core() {
    let f = load("native-vault.json");
    assert_eq!(f.items.len(), 2);
    assert_eq!(read_with_kv_ffi(&f), f.items);
    assert_eq!(read_with_web_core(&f), f.items);
    // History made by kv-ffi decrypts in the web core.
    let core = WebCore::new(Arc::new(web_store(&f))).unwrap();
    core.unlock(&f.master_password, &f.secret_key).unwrap();
    let bank = f.items.iter().find(|i| i.title == "Bank").unwrap();
    let h = core.item_history(&bank.id).unwrap();
    assert_eq!(h[0].password.as_deref(), Some("first password"));
}

/// Made by the wasm build (`node crates/kv-wasm/js/smoke.mjs`), opened by kv-ffi.
#[test]
fn wasm_fixture_opens_in_kv_ffi() {
    let f = load("wasm-vault.json");
    assert!(!f.items.is_empty());
    assert_eq!(read_with_kv_ffi(&f), f.items);
    // kv-ffi can keep using the vault: edit, and the web core reads the edit back.
    let dir = tempfile::tempdir().unwrap();
    let db = dir.path().join("vault.db");
    web_to_sqlite(&web_store(&f), &SqliteStore::open(&db).unwrap());
    let core = kv_ffi::VaultCore::open(db.to_string_lossy().into_owned()).unwrap();
    core.unlock(f.master_password.clone(), f.secret_key.clone()).unwrap();
    let first = core.list_items().unwrap().remove(0);
    let mut d = core.get_item(first.id.clone()).unwrap();
    d.notes = Some("edited natively".into());
    core.save_item(d).unwrap();
    drop(core);
    let back = sqlite_to_web(&SqliteStore::open(&db).unwrap());
    let web = WebCore::new(Arc::new(back)).unwrap();
    web.unlock(&f.master_password, &f.secret_key).unwrap();
    assert_eq!(web.get_item(&first.id).unwrap().notes.as_deref(), Some("edited natively"));
}