tried to start on the web part

Cargo.toml

@@ -8,6 +8,7 @@ edition = "2021"
 [dependencies]
 # for web server
 rocket = { version = "0.5.0", features = ["json", "uuid"] }
+rocket_dyn_templates = { version = "0.1.0", features = ["handlebars", "tera"] }
 # for json serialization
 serde = "1.0.196"
 # for random number generation
@@ -20,4 +21,7 @@ uuid = { version = "1.7.0", features = ["serde", "v4"] }
 structopt = "0.3.23"
 # for csv reading
 csv = "1.1.6"
-clap = { version = "4.5.3", features = ["derive"] }
+clap = { version = "4.3.24", features = ["derive"] }
+
+
+stv-rs = "0.3.0"

src/main.rs

@@ -1,188 +1,61 @@
-use std::fs::File;
+#[macro_use]
-use std::io::prelude::*;
+extern crate rocket;
-use std::fs::OpenOptions;
-use std::path::Path;
-//import for taking application flags
 
+use rocket::form::Form;
+use rocket::response::Redirect;
+use rocket::State; // Add this line
+use rocket::fs::FileServer;
+use rocket::serde::json::Json;
+use rocket_dyn_templates::Template;
+use std::sync::Mutex;
+use std::collections::HashMap;
+use csv::Writer;
 
-#[derive(Clone)]
+mod voting;
-struct Ballot {
+
-    weight: i32,
+#[derive(rocket::FromForm)]
-    candidates: Vec<i32>,
+struct Vote {
+    option: String,
 }
 
-struct Candidate {
+type Votes = Mutex<Writer<std::fs::File>>;
-    id: i32,
-    name: String,
 
+#[post("/vote", data = "<vote>")]
+fn vote(vote: Form<Vote>, votes: &State<Votes>) -> Redirect {
+    let mut writer = votes.lock().unwrap();
+    writer.write_record(&[vote.option.clone()]).unwrap();
+    writer.flush().unwrap();
+
+    Redirect::to("/")
 }
 
-struct ElectionData {
+#[post("/results")]
-    num_candidates: i32,
+fn results() -> Json<HashMap<String, String>> {
-    num_seats: i32,
+    let election_data = voting::csv_to_election_data("votes.csv", 1, "Election".to_string());
-    ballots: Vec<Ballot>,
+    let blt = voting::election_data_to_blt(election_data);
-    candidates: Vec<Candidate>,
+    let results = voting::run_blt(blt);
-    title: String,
+    Json(results)
 }
 
-
+#[get("/")]
-fn election_data_to_blt(election_data: ElectionData) -> String {
+fn index() -> Template {
-    //convert the election data to a blt file
+    let context: HashMap<&str, &str> = HashMap::new();
-    //format 
+    Template::render("index", &context)
-    // 7 4  # 7 candidates, 4 seats
-    //1 1 3 0 # weigth, candidate ids, 0
-    // ...
-    //0
-    //"a" # candidate name
-    //...
-    //"title" # election title
-
-    let mut blt = String::new();
-    //push the number of candidates and seats
-    blt.push_str(&format!("{} {}\n", election_data.num_candidates, election_data.num_seats));
-
-
-    for ballot in &election_data.ballots {
-        blt.push_str(&format!("{} ", ballot.weight));
-        for candidate in &ballot.candidates {
-            blt.push_str(&format!("{} ", candidate)); // Use candidate directly
-        }
-        blt.push_str("0\n");
-    }
-    blt.push_str("0\n");
-    for candidate in &election_data.candidates {
-        blt.push_str(&format!("\"{}\"\n", candidate.name));
-    }
-    blt.push_str(&format!("\"{}\"\n", election_data.title));
-
-    return blt;
 }
 
+#[launch]
+fn rocket() -> _ {
+    let file = std::fs::OpenOptions::new()
+        .create(true)
+        .append(true)
+        .open("votes.csv")
+        .unwrap();
 
-fn csv_to_election_data(csv: &str, num_seats: i32, title: String) -> ElectionData {
+    let writer = csv::Writer::from_writer(file);
-    //read the csv file and convert it to a ballot
-    let delimiter = ",";
 
-    //read the csv file
+    rocket::build()
-    let mut file = File::open(csv).expect("file not found");
+        .attach(Template::fairing())
-
+        .manage(Mutex::new(writer))
-    //convert the csv file to a list of lists [ ['a', 'c', 'b'], ['b', 'a', 'd'] ] where each line is a array like ['a', 'c', 'b']
+        .mount("/", routes![index, vote])
-    let mut contents = String::new();
+        .mount("/static", FileServer::from("static"))
-    file.read_to_string(&mut contents).expect("something went wrong reading the file");
-    let lines: Vec<&str> = contents.split("\n").collect();
-    
-    let mut votes: Vec<Vec<&str>> = Vec::new();
-    for line in lines {
-        let vote: Vec<&str> = line.split(delimiter).collect();
-        votes.push(vote);
-    }
-
-    //get all the unique candidates from all the votes and create a list of candidates
-    let mut names: Vec<&str> = Vec::new();
-    for vote in &votes {
-        for name in vote {
-            if !names.contains(name) {
-                names.push(name);
-            }
-        }
-    }
-    let num_candidates = names.len() as i32;
-
-    let mut candidates: Vec<Candidate> = Vec::new();
-    for (i, name) in names.iter().enumerate() {
-        let candidate = Candidate {
-            id: (i + 1) as i32, // Add 1 to make it 1-indexed
-            name: name.to_string(),
-        };
-        candidates.push(candidate);
-    }
-
-    //generate the ballots
-    let mut ballots: Vec<Ballot> = Vec::new();
-    for vote in &votes {
-        let mut ballot = Ballot {
-            weight: 1,
-            candidates: Vec::new(),
-        };
-        for name in vote {
-            for candidate in &candidates {
-                if candidate.name == *name {
-                    ballot.candidates.push(candidate.id);
-                }
-            }
-        }
-        ballots.push(ballot);
-    }
-
-    //deduplicate the ballots
-    let mut deduped_ballots: Vec<Ballot> = Vec::new();
-    for ballot in ballots {
-        let mut found = false;
-        for deduped_ballot in &deduped_ballots {
-            if deduped_ballot.candidates == ballot.candidates {
-                found = true;
-                break;
-            }
-        }
-        if !found {
-            deduped_ballots.push(ballot);
-        }
-    }
-    ballots = deduped_ballots;
-
-    let election_data = ElectionData {
-        num_candidates: num_candidates,
-        num_seats: num_seats,
-        ballots: ballots,
-        candidates: candidates,
-        title: title,
-    };
-    return election_data;
-}
-
-
-
-
-
-
-use clap::Parser;
-#[derive(Parser, Debug)]
-#[command(version, about, long_about = None)]
-struct Args {
-    //number of seats to be elected
-    #[clap(short, long, default_value = "1")]
-    seats: i32,
-    //title of the election
-    #[clap(short, long)]
-    title: String,
-    //csv file containing the votes
-    #[clap(short, long)]
-    csv: String,
-    //output file
-    #[clap(short, long, default_value = "")]
-    output: String,
-}
-
-fn main() {
-    let args: Args = Args::parse();
-    
-    let election_data = csv_to_election_data(&args.csv, args.seats, args.title);
-    let blt = election_data_to_blt(election_data);
-    //if output is not specified, print to stdout
-    if args.output == "" {
-        println!("{}", blt);
-        return;
-    }
-
-    let file_path = &args.output;
-    if Path::new(file_path).exists() {
-        panic!("File already exists");
-    } else {
-        let mut file = OpenOptions::new()
-            .write(true)
-            .create_new(true)
-            .open(file_path)
-            .expect("Failed to create file");
-        file.write_all(blt.as_bytes()).expect("write failed");
-    }
 }

src/templates/main.html

@@ -0,0 +1,37 @@
+<!DOCTYPE html>
+<html>
+<head>
+    <title>Voting List</title>
+    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/jqueryui/1.12.1/jquery-ui.min.css">
+    <style>
+        #sortable { list-style-type: none; margin: 0; padding: 0; width: 60%; }
+        #sortable li { margin: 5px; padding: 5px; font-size: 1.2em; height: 2em; }
+    </style>
+</head>
+<body>
+    <h2>Vote List</h2>
+    <ul id="sortable">
+        <li class="ui-state-default"><input type="checkbox"> Item 1</li>
+        <li class="ui-state-default"><input type="checkbox"> Item 2</li>
+    </ul>
+    <button id="add">Add Item</button>
+
+    <script src="https://code.jquery.com/jquery-1.12.4.js"></script>
+    <script src="https://code.jquery.com/ui/1.12.1/jquery-ui.js"></script>
+    <script>
+        $( function() {
+            $( "#sortable" ).sortable();
+            $( "#sortable" ).disableSelection();
+
+            let count = 3;
+            $('#add').click(function() {
+                if ($('#sortable li').length < 10) {
+                    $('#sortable').append('<li class="ui-state-default"><input type="checkbox"> Item ' + count++ + '</li>');
+                } else {
+                    alert('Threshold reached');
+                }
+            });
+        } );
+    </script>
+</body>
+</html>

src/voting.rs

@@ -0,0 +1,210 @@
+use std::fs::File;
+use std::io::prelude::*;
+use std::fs::OpenOptions;
+use std::path::Path;
+
+
+// https://docs.rs/stv-rs/0.3.0/stv_rs/all.html
+
+
+
+
+use stv_rs::parse::parse_election;
+use stv_rs::meek::stv_droop;
+use stv_rs::types::Election;
+use stv_rs::types::ElectionResult;
+
+pub fn blt_to_string_results(blt: String) -> String {
+    // Parse the blt string into an Election object
+    let election: Election = parse_election(&blt).unwrap();
+
+    // Run the meek election
+    let result: ElectionResult = stv_droop(&election).unwrap();
+
+    // Convert the ElectionResult object to a String
+    let string_result = format!("{:?}", result);
+
+    string_result
+}
+
+
+
+
+
+
+#[derive(Clone)]
+struct Ballot {
+    weight: i32,
+    candidates: Vec<i32>,
+}
+
+struct Candidate {
+    id: i32,
+    name: String,
+
+}
+
+struct ElectionData {
+    num_candidates: i32,
+    num_seats: i32,
+    ballots: Vec<Ballot>,
+    candidates: Vec<Candidate>,
+    title: String,
+}
+
+
+pub fn election_data_to_blt(election_data: ElectionData) -> String {
+    //convert the election data to a blt file
+    //format 
+    // 7 4  # 7 candidates, 4 seats
+    //1 1 3 0 # weigth, candidate ids, 0
+    // ...
+    //0
+    //"a" # candidate name
+    //...
+    //"title" # election title
+
+    let mut blt = String::new();
+    //push the number of candidates and seats
+    blt.push_str(&format!("{} {}\n", election_data.num_candidates, election_data.num_seats));
+
+
+    for ballot in &election_data.ballots {
+        blt.push_str(&format!("{} ", ballot.weight));
+        for candidate in &ballot.candidates {
+            blt.push_str(&format!("{} ", candidate)); // Use candidate directly
+        }
+        blt.push_str("0\n");
+    }
+    blt.push_str("0\n");
+    for candidate in &election_data.candidates {
+        blt.push_str(&format!("\"{}\"\n", candidate.name));
+    }
+    blt.push_str(&format!("\"{}\"\n", election_data.title));
+
+    return blt;
+}
+
+pub fn csv_to_election_data(csv: &str, num_seats: i32, title: String) -> ElectionData {
+    //read the csv file and convert it to a ballot
+    let delimiter = ",";
+    
+    //read the csv file
+    let mut file = File::open(csv).expect("file not found");
+
+    //convert the csv file to a list of lists [ ['a', 'c', 'b'], ['b', 'a', 'd'] ] where each line is a array like ['a', 'c', 'b']
+    let mut contents = String::new();
+    file.read_to_string(&mut contents).expect("something went wrong reading the file");
+    let lines: Vec<&str> = contents.split("\n").collect();
+    
+    let mut votes: Vec<Vec<&str>> = Vec::new();
+    for line in lines {
+        let vote: Vec<&str> = line.split(delimiter).collect();
+        votes.push(vote);
+    }
+
+    //get all the unique candidates from all the votes and create a list of candidates
+    let mut names: Vec<&str> = Vec::new();
+    for vote in &votes {
+        for name in vote {
+            if !names.contains(name) {
+                names.push(name);
+            }
+        }
+    }
+    let num_candidates = names.len() as i32;
+
+    let mut candidates: Vec<Candidate> = Vec::new();
+    for (i, name) in names.iter().enumerate() {
+        let candidate = Candidate {
+            id: (i + 1) as i32, // Add 1 to make it 1-indexed
+            name: name.to_string(),
+        };
+        candidates.push(candidate);
+    }
+
+    //generate the ballots
+    let mut ballots: Vec<Ballot> = Vec::new();
+    for vote in &votes {
+        let mut ballot = Ballot {
+            weight: 1,
+            candidates: Vec::new(),
+        };
+        for name in vote {
+            for candidate in &candidates {
+                if candidate.name == *name {
+                    ballot.candidates.push(candidate.id);
+                }
+            }
+        }
+        ballots.push(ballot);
+    }
+
+    //deduplicate the ballots
+    let mut deduped_ballots: Vec<Ballot> = Vec::new();
+    for ballot in ballots {
+        let mut found = false;
+        for deduped_ballot in &deduped_ballots {
+            if deduped_ballot.candidates == ballot.candidates {
+                found = true;
+                break;
+            }
+        }
+        if !found {
+            deduped_ballots.push(ballot);
+        }
+    }
+    ballots = deduped_ballots;
+
+    let election_data = ElectionData {
+        num_candidates: num_candidates,
+        num_seats: num_seats,
+        ballots: ballots,
+        candidates: candidates,
+        title: title,
+    };
+    return election_data;
+}
+
+
+use clap::Parser;
+#[derive(Parser, Debug)]
+#[command(version, about, long_about = None)]
+struct Args {
+    //number of seats to be elected
+    #[clap(short, long, default_value = "1")]
+    seats: i32,
+    //title of the election
+    #[clap(short, long)]
+    title: String,
+    //csv file containing the votes
+    #[clap(short, long)]
+    csv: String,
+    //output file
+    #[clap(short, long, default_value = "")]
+    output: String,
+}
+
+fn main() {
+    let args: Args = Args::parse();
+    
+    let election_data = csv_to_election_data(&args.csv, args.seats, args.title);
+    let blt = election_data_to_blt(election_data);
+    //if output is not specified, print to stdout
+    if args.output == "" {
+        println!("{}", blt);
+        return;
+    }
+
+    let file_path = &args.output;
+    if Path::new(file_path).exists() {
+        panic!("File already exists");
+    } else {
+        let mut file = OpenOptions::new()
+            .write(true)
+            .create_new(true)
+            .open(file_path)
+            .expect("Failed to create file");
+        file.write_all(blt.as_bytes()).expect("write failed");
+    }
+}