// heromodels/examples/governance_proposal_example/main.rs

use chrono::{Duration, Utc};
use heromodels::db::{Collection, Db};
use heromodels::models::governance::{Ballot, Proposal, ProposalStatus, VoteEventStatus};

fn main() {
    println!("Governance Proposal Model Example\n");

    // Create a new DB instance, reset before every run
    let db_path = "/tmp/ourdb_governance_proposal_example";
    let db = heromodels::db::hero::OurDB::new(db_path, true).expect("Can create DB");

    // Create a new proposal with auto-generated ID
    let mut proposal = Proposal::new(
        None, // id (auto-generated)
        "user_creator_123",
        "Ahmed fared",                      // creator_id
        "Community Fund Allocation for Q3", // title
        "Proposal to allocate funds for community projects in the third quarter.", // description
        ProposalStatus::Draft,
        Utc::now(),                      // created_at
        Utc::now(),                      // updated_at
        Utc::now(),                      // vote_start_date
        Utc::now() + Duration::days(14), // vote_end_date (14 days from now)
    );

    println!(
        "Before saving - Created Proposal: '{}' (ID: {})",
        proposal.title, proposal.base_data.id
    );
    println!(
        "Before saving - Status: {:?}, Vote Status: {:?}",
        proposal.status, proposal.vote_status
    );
    println!(
        "Before saving - Vote Period: {} to {}\n",
        proposal.vote_start_date, proposal.vote_end_date
    );

    // Add vote options
    proposal = proposal.add_option(1, "Approve Allocation", Some("This is the approval option"));
    proposal = proposal.add_option(2, "Reject Allocation", Some("This is the rejection option"));
    proposal = proposal.add_option(3, "Abstain", Some("This is the abstain option"));

    println!("Added Vote Options:");
    for option in &proposal.options {
        println!(
            "- Option ID: {}, Text: '{}', Votes: {}",
            option.id, option.text, option.count
        );
    }
    println!("");

    // Save the proposal to the database
    let collection = db
        .collection::<Proposal>()
        .expect("can open proposal collection");
    let (proposal_id, saved_proposal) = collection.set(&proposal).expect("can save proposal");

    println!(
        "After saving - Proposal ID: {}",
        saved_proposal.base_data.id
    );
    println!("After saving - Returned ID: {}", proposal_id);

    // Use the saved proposal for further operations
    proposal = saved_proposal;

    // Simulate casting votes
    println!("Simulating Votes...");
    // User 1 votes for 'Approve Allocation' with 100 shares (with explicit ballot ID)
    proposal = proposal.cast_vote(Some(101), 1, 1, 100);
    // User 2 votes for 'Reject Allocation' with 50 shares (with explicit ballot ID)
    proposal = proposal.cast_vote(Some(102), 2, 2, 50);
    // User 3 votes for 'Approve Allocation' with 75 shares (with auto-generated ballot ID)
    proposal = proposal.cast_vote(None, 3, 1, 75);
    // User 4 abstains with 20 shares (with auto-generated ballot ID)
    proposal = proposal.cast_vote(None, 4, 3, 20);
    // User 5 attempts to vote for a non-existent option (should be handled gracefully)
    proposal = proposal.cast_vote(Some(105), 5, 99, 10);
    // User 1 tries to vote again (not explicitly prevented by current model, but could be a future enhancement)
    // proposal = proposal.cast_vote(Some(106), 1, 1, 10);

    println!("\nVote Counts After Simulation:");
    for option in &proposal.options {
        println!(
            "- Option ID: {}, Text: '{}', Votes: {}",
            option.id, option.text, option.count
        );
    }

    println!("\nBallots Cast:");
    for ballot in &proposal.ballots {
        println!(
            "- Ballot ID: {}, User ID: {}, Option ID: {}, Shares: {}",
            ballot.base_data.id, ballot.user_id, ballot.vote_option_id, ballot.shares_count
        );
    }
    println!("");

    // Example of voting with comments using the cast_vote_with_comment method
    println!("Adding votes with comments...");
    
    // User 7 votes for 'Approve Allocation' with a comment
    proposal = proposal.cast_vote_with_comment(
        Some(110), // ballot_id
        7,          // user_id
        1,          // chosen_option_id (Approve Allocation)
        80,         // shares
        "I strongly support this proposal because it aligns with our community values."
    );
    
    // User 8 votes for 'Reject Allocation' with a comment
    proposal = proposal.cast_vote_with_comment(
        Some(111), // ballot_id
        8,          // user_id
        2,          // chosen_option_id (Reject Allocation)
        60,         // shares
        "I have concerns about the allocation priorities."
    );

    println!("\nBallots with Comments:");
    for ballot in &proposal.ballots {
        if let Some(comment) = &ballot.comment {
            println!(
                "- Ballot ID: {}, User ID: {}, Option ID: {}, Shares: {}",
                ballot.base_data.id, ballot.user_id, ballot.vote_option_id, ballot.shares_count
            );
            println!("  Comment: \"{}\"", comment);
        }
    }

    println!("\nUpdated Vote Counts After Comments:");
    for option in &proposal.options {
        println!(
            "- Option ID: {}, Text: '{}', Votes: {}",
            option.id, option.text, option.count
        );
    }

    // Change proposal status
    proposal = proposal.change_proposal_status(ProposalStatus::Active);
    println!("Changed Proposal Status to: {:?}", proposal.status);

    // Simulate closing the vote
    proposal = proposal.change_vote_event_status(VoteEventStatus::Closed);
    println!("Changed Vote Event Status to: {:?}", proposal.vote_status);

    // Attempt to cast a vote after closing (should be handled)
    println!("\nAttempting to cast vote after voting is closed...");
    proposal = proposal.cast_vote(None, 6, 1, 25);

    // Final proposal state
    println!("\nFinal Proposal State:");
    println!("Title: '{}'", proposal.title);
    println!("Status: {:?}", proposal.status);
    println!("Vote Status: {:?}", proposal.vote_status);
    println!("Options:");
    for option in &proposal.options {
        println!(
            "  - {}: {} (Votes: {})",
            option.id, option.text, option.count
        );
    }
    println!("Total Ballots: {}", proposal.ballots.len());

    // Example of a private proposal (not fully implemented in cast_vote eligibility yet)
    let mut private_proposal = Proposal::new(
        None, // auto-generated ID
        "user_admin_001",
        "Wael Ghonem",
        "Internal Team Restructure Vote",
        "Vote on proposed internal team changes.",
        ProposalStatus::Draft,
        Utc::now(),
        Utc::now(),
        Utc::now(),
        Utc::now() + Duration::days(7),
    );
    private_proposal.private_group = Some(vec![10, 20, 30]); // Only users 10, 20, 30 can vote
    private_proposal = private_proposal.add_option(
        1,
        "Accept Restructure",
        Some("This is the accept restructure option".to_string()),
    );
    private_proposal = private_proposal.add_option(
        2,
        "Reject Restructure",
        Some("This is the reject restructure option".to_string()),
    );

    println!(
        "\nBefore saving - Created Private Proposal: '{}'",
        private_proposal.title
    );
    println!(
        "Before saving - Eligible Voters (Group): {:?}",
        private_proposal.private_group
    );

    // Save the private proposal to the database
    let (private_proposal_id, saved_private_proposal) = collection
        .set(&private_proposal)
        .expect("can save private proposal");
    private_proposal = saved_private_proposal;

    println!(
        "After saving - Private Proposal ID: {}",
        private_proposal.base_data.id
    );
    println!("After saving - Returned ID: {}", private_proposal_id);

    // User 10 (eligible) votes with explicit ballot ID
    private_proposal = private_proposal.cast_vote(Some(201), 10, 1, 100);
    // User 40 (ineligible) tries to vote with auto-generated ballot ID
    private_proposal = private_proposal.cast_vote(None, 40, 1, 50);

    // Example of voting with comments on a private proposal
    println!("\nAdding votes with comments to private proposal...");
    
    // User 20 (eligible) votes with a comment
    private_proposal = private_proposal.cast_vote_with_comment(
        Some(202),  // ballot_id
        20,         // user_id (eligible)
        1,          // chosen_option_id
        75,         // shares
        "I support this restructuring plan with some reservations."
    );
    
    // User 30 (eligible) votes with a comment
    private_proposal = private_proposal.cast_vote_with_comment(
        Some(203),  // ballot_id
        30,         // user_id (eligible)
        2,          // chosen_option_id
        90,         // shares
        "I believe we should reconsider the timing of these changes."
    );
    
    // User 40 (ineligible) tries to vote with a comment
    private_proposal = private_proposal.cast_vote_with_comment(
        Some(204),  // ballot_id
        40,         // user_id (ineligible)
        1,          // chosen_option_id
        50,         // shares
        "This restructuring seems unnecessary."
    );
    
    println!("Eligible users 20 and 30 added votes with comments.");
    println!("Ineligible user 40 attempted to vote with a comment (should be rejected).");

    println!("\nPrivate Proposal Ballots with Comments:");
    for ballot in &private_proposal.ballots {
        if let Some(comment) = &ballot.comment {
            println!(
                "- Ballot ID: {}, User ID: {}, Option ID: {}, Shares: {}",
                ballot.base_data.id, ballot.user_id, ballot.vote_option_id, ballot.shares_count
            );
            println!("  Comment: \"{}\"", comment);
        }
    }

    println!("Private Proposal Vote Counts:");
    for option in &private_proposal.options {
        println!(
            "  - {}: {} (Votes: {})",
            option.id, option.text, option.count
        );
    }

    println!("\nExample finished. DB stored at {}", db_path);
    println!(
        "To clean up, you can manually delete the directory: {}",
        db_path
    );

    // --- Additional Example: Listing and Filtering Proposals ---
    println!("\n--- Listing All Proposals ---");
    // List all proposals from the DB
    let all_proposals = collection.get_all().expect("can list all proposals");
    for proposal in &all_proposals {
        println!(
            "- Proposal ID: {}, Title: '{}', Status: {:?}",
            proposal.base_data.id, proposal.title, proposal.status
        );
    }
    println!("Total proposals in DB: {}", all_proposals.len());

    // Filter proposals by status (e.g., only Active proposals)
    let active_proposals: Vec<_> = all_proposals
        .iter()
        .filter(|p| p.status == ProposalStatus::Active)
        .collect();
    println!("\n--- Filtering Proposals by Status: Active ---");
    for proposal in &active_proposals {
        println!(
            "- Proposal ID: {}, Title: '{}', Status: {:?}",
            proposal.base_data.id, proposal.title, proposal.status
        );
    }
    println!("Total ACTIVE proposals: {}", active_proposals.len());
}