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|
pub mod records;
mod sqlite;
use miette::Diagnostic;
use sqlite::SQLiteStore;
use thiserror::Error;
use records::{EquityChangeEvent, EquitySymbol, FiduciaryAccount};
type Result<T> = miette::Result<T, ContextError>;
pub enum Context {
SQLite(SQLiteStore),
}
#[derive(Debug, Diagnostic, Error)]
pub enum ContextError {
#[error("Data storage error")]
DataError(#[from] ::sqlite::Error),
#[error("Migration error")]
MigrationError(#[from] crate::db::MigrationError),
#[error("Int conversion error")]
IntConversionError(#[from] std::num::TryFromIntError),
#[error("Timestamp conversion error")]
ChronoConversionError(#[from] chrono::ParseError),
#[error("BigDecimal conversion error")]
DecimalConversionError(#[from] bigdecimal::ParseBigDecimalError),
#[error("Enum not translatable error")]
EnumTranslationError(String),
}
impl Default for Context {
fn default() -> Self {
Context::SQLite(SQLiteStore::default())
}
}
impl std::fmt::Display for Context {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
write!(
f,
"{}",
match self {
Self::SQLite(_) => "SQLite",
}
)
}
}
pub struct AppContext {
context: Context,
accounts: Vec<FiduciaryAccount>,
symbols: Vec<EquitySymbol>,
events: Vec<EquityChangeEvent>,
}
impl Default for AppContext {
fn default() -> Self {
AppContext {
context: Context::default(),
// these defaults get overwritten when #init_context is run
accounts: vec![],
symbols: vec![],
events: vec![],
}
}
}
pub trait Store {
fn init(&mut self) -> Result<()>;
fn get_accounts(&self) -> Result<Vec<FiduciaryAccount>>;
fn get_symbols(&self) -> Result<Vec<EquitySymbol>>;
fn get_events(&self) -> Result<Vec<EquityChangeEvent>>;
fn add_account(&mut self, account: &FiduciaryAccount) -> Result<()>;
fn add_symbol(&mut self, symbol: &EquitySymbol) -> Result<()>;
fn add_event(&mut self, event: &EquityChangeEvent) -> Result<()>;
}
impl AppContext {
/// Returns a mutable version of the generic implementation of the store
/// along with references to the objects in context. Both store and context
/// need to be updated in tandem, so a tuple must be returned to be able to
/// produce mutable references in the same lifetime
fn unwrap_store(
&mut self,
) -> (
&mut impl Store,
&mut Vec<FiduciaryAccount>,
&mut Vec<EquitySymbol>,
&mut Vec<EquityChangeEvent>,
) {
(
match &mut self.context {
Context::SQLite(store) => store,
},
&mut self.accounts,
&mut self.symbols,
&mut self.events,
)
}
fn get_store(&self) -> &impl Store {
match &self.context {
Context::SQLite(store) => store,
}
}
pub fn init_context(&mut self) -> Result<()> {
self.unwrap_store().0.init()?;
tracing::event!(
tracing::Level::DEBUG,
context = self.context.to_string(),
"Store initialized."
);
self.accounts = self.get_store().get_accounts()?;
self.symbols = self.get_store().get_symbols()?;
self.events = self.get_store().get_events()?;
Ok(())
}
pub fn get_accounts(&self) -> &Vec<FiduciaryAccount> {
&self.accounts
}
pub fn get_symbols(&self) -> &Vec<EquitySymbol> {
&self.symbols
}
pub fn get_events(&self) -> &Vec<EquityChangeEvent> {
&self.events
}
pub fn add_account(&mut self, account: FiduciaryAccount) -> Result<()> {
let (store, accounts, ..) = self.unwrap_store();
let acc = accounts.push_mut(account);
tracing::event!(
tracing::Level::TRACE,
fiduciary_account_id = acc.fiduciary_account_id,
"Added account to context."
);
store.add_account(acc)?;
Ok(())
}
pub fn add_symbol(&mut self, symbol: EquitySymbol) -> Result<()> {
let (store, _, symbols, ..) = self.unwrap_store();
let sym = symbols.push_mut(symbol);
tracing::event!(
tracing::Level::TRACE,
equity_symbol_id = sym.equity_symbol_id,
"Added symbol to context."
);
store.add_symbol(sym)?;
Ok(())
}
pub fn add_event(&mut self, event: EquityChangeEvent) -> Result<()> {
let (store, .., events) = self.unwrap_store();
let ev = events.push_mut(event);
tracing::event!(
tracing::Level::TRACE,
equity_change_event_id = ev.equity_change_event_id,
"Added event to context."
);
store.add_event(ev)?;
Ok(())
}
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn context_default() {
let context = Context::default();
let res = match context {
Context::SQLite(_) => true,
};
assert!(res);
}
}
|
