start porting model specs into heromodels
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timurgordon
189
heromodels/examples/governance_rhai/example.rs
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189
heromodels/examples/governance_rhai/example.rs
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use heromodels::db::hero::OurDB;
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use heromodels::models::governance::{Proposal, ProposalStatus, VoteEventStatus, VoteOption, Ballot};
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use rhai::Engine;
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use rhai_wrapper::wrap_vec_return;
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use std::sync::Arc;
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use std::{fs, path::Path};
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use chrono::{Utc, Duration};
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fn main() -> Result<(), Box<dyn std::error::Error>> {
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// Initialize Rhai engine
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let mut engine = Engine::new();
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// Initialize database
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let db = Arc::new(OurDB::new("temp_governance_db", true).expect("Failed to create database"));
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// Register the Proposal type with Rhai
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// This function is generated by the #[rhai_model_export] attribute
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Proposal::register_rhai_bindings_for_proposal(&mut engine, db.clone());
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// Register the Ballot type with Rhai
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Ballot::register_rhai_bindings_for_ballot(&mut engine, db.clone());
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// Register a function to get the database instance
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engine.register_fn("get_db", move || db.clone());
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// Register builder functions for Proposal and related types
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engine.register_fn("create_proposal", |id: i64, creator_id: String, title: String, description: String| {
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let start_date = Utc::now();
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let end_date = start_date + Duration::days(14);
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Proposal::new(id as u32, creator_id, title, description, start_date, end_date)
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});
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engine.register_fn("create_vote_option", |id: i64, text: String| {
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VoteOption::new(id as u8, text)
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});
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engine.register_fn("create_ballot", |id: i64, user_id: i64, vote_option_id: i64, shares_count: i64| {
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Ballot::new(id as u32, user_id as u32, vote_option_id as u8, shares_count)
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});
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// Register getter and setter methods for Proposal properties
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engine.register_fn("get_title", |proposal: Proposal| -> String {
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proposal.title.clone()
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});
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engine.register_fn("get_description", |proposal: Proposal| -> String {
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proposal.description.clone()
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});
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engine.register_fn("get_creator_id", |proposal: Proposal| -> String {
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proposal.creator_id.clone()
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});
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engine.register_fn("get_id", |proposal: Proposal| -> i64 {
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proposal.base_data.id as i64
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});
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engine.register_fn("get_status", |proposal: Proposal| -> String {
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format!("{:?}", proposal.status)
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});
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engine.register_fn("get_vote_status", |proposal: Proposal| -> String {
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format!("{:?}", proposal.vote_status)
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});
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// Register methods for proposal operations
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engine.register_fn("add_option_to_proposal", |mut proposal: Proposal, option_id: i64, option_text: String| -> Proposal {
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proposal.add_option(option_id as u8, option_text)
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});
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engine.register_fn("cast_vote_on_proposal", |mut proposal: Proposal, ballot_id: i64, user_id: i64, option_id: i64, shares: i64| -> Proposal {
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proposal.cast_vote(ballot_id as u32, user_id as u32, option_id as u8, shares)
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});
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engine.register_fn("change_proposal_status", |mut proposal: Proposal, status_str: String| -> Proposal {
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let new_status = match status_str.as_str() {
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"Draft" => ProposalStatus::Draft,
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"Active" => ProposalStatus::Active,
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"Approved" => ProposalStatus::Approved,
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"Rejected" => ProposalStatus::Rejected,
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"Cancelled" => ProposalStatus::Cancelled,
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_ => ProposalStatus::Draft,
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};
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proposal.change_proposal_status(new_status)
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});
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engine.register_fn("change_vote_event_status", |mut proposal: Proposal, status_str: String| -> Proposal {
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let new_status = match status_str.as_str() {
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"Open" => VoteEventStatus::Open,
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"Closed" => VoteEventStatus::Closed,
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"Cancelled" => VoteEventStatus::Cancelled,
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_ => VoteEventStatus::Open,
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};
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proposal.change_vote_event_status(new_status)
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});
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// Register functions for database operations
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engine.register_fn("save_proposal", |_db: Arc<OurDB>, proposal: Proposal| {
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println!("Proposal saved: {}", proposal.title);
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});
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engine.register_fn("get_proposal_by_id", |_db: Arc<OurDB>, id: i64| -> Proposal {
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// In a real implementation, this would retrieve the proposal from the database
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let start_date = Utc::now();
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let end_date = start_date + Duration::days(14);
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Proposal::new(id as u32, "Retrieved Creator", "Retrieved Proposal", "Retrieved Description", start_date, end_date)
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});
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// Register a function to check if a proposal exists
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engine.register_fn("proposal_exists", |_db: Arc<OurDB>, id: i64| -> bool {
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// In a real implementation, this would check if the proposal exists in the database
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id == 1 || id == 2
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});
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// Define the function for get_all_proposals
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fn get_all_proposals(_db: Arc<OurDB>) -> Vec<Proposal> {
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// In a real implementation, this would retrieve all proposals from the database
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let start_date = Utc::now();
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let end_date = start_date + Duration::days(14);
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vec![
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Proposal::new(1, "Creator 1", "Proposal 1", "Description 1", start_date, end_date),
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Proposal::new(2, "Creator 2", "Proposal 2", "Description 2", start_date, end_date)
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]
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}
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// Register the function with the wrap_vec_return macro
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engine.register_fn("get_all_proposals", wrap_vec_return!(get_all_proposals, Arc<OurDB> => Proposal));
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engine.register_fn("delete_proposal_by_id", |_db: Arc<OurDB>, _id: i64| {
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// In a real implementation, this would delete the proposal from the database
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println!("Proposal deleted with ID: {}", _id);
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});
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// Register helper functions for accessing proposal options and ballots
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engine.register_fn("get_option_count", |proposal: Proposal| -> i64 {
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proposal.options.len() as i64
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});
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engine.register_fn("get_option_at", |proposal: Proposal, index: i64| -> VoteOption {
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if index >= 0 && index < proposal.options.len() as i64 {
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proposal.options[index as usize].clone()
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} else {
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VoteOption::new(0, "Invalid Option")
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}
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});
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engine.register_fn("get_option_text", |option: VoteOption| -> String {
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option.text.clone()
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});
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engine.register_fn("get_option_votes", |option: VoteOption| -> i64 {
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option.count
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});
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engine.register_fn("get_ballot_count", |proposal: Proposal| -> i64 {
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proposal.ballots.len() as i64
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});
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engine.register_fn("get_ballot_at", |proposal: Proposal, index: i64| -> Ballot {
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if index >= 0 && index < proposal.ballots.len() as i64 {
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proposal.ballots[index as usize].clone()
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} else {
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Ballot::new(0, 0, 0, 0)
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}
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});
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engine.register_fn("get_ballot_user_id", |ballot: Ballot| -> i64 {
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ballot.user_id as i64
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});
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engine.register_fn("get_ballot_option_id", |ballot: Ballot| -> i64 {
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ballot.vote_option_id as i64
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});
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engine.register_fn("get_ballot_shares", |ballot: Ballot| -> i64 {
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ballot.shares_count
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});
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// Load and evaluate the Rhai script
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let script_path = Path::new("examples/governance_rhai/governance.rhai");
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let script = fs::read_to_string(script_path)?;
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match engine.eval::<()>(&script) {
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Ok(_) => println!("Script executed successfully!"),
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Err(e) => eprintln!("Script execution failed: {}", e),
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}
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Ok(())
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}
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