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use serenity::framework::standard::{macros::command, Args, CommandResult};
use serenity::model::prelude::*;
use serenity::prelude::*;
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use serde_json::Value;
use std::fs::File;
use std::io::Read;
use rand::seq::IteratorRandom;
fn random_from_string(string: &str) -> char {
string.chars().choose(&mut rand::thread_rng()).unwrap()
}
async fn display_kanji(ctx: &Context, msg: &Message, kanji: char, comment: &str) -> CommandResult {
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msg.reply(&ctx.http, format!("{}{}", kanji, comment))
.await?;
let url = format!(
"https://raw.githubusercontent.com/mistval/kanji_images/master/gifs/{}.gif",
format!("{:x}", kanji as i32)
);
let client = reqwest::Client::new();
let request = client.head(&url).build().unwrap();
let response = client.execute(request).await?.status();
let link_validated = response != reqwest::StatusCode::NOT_FOUND;
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msg.channel_id
.say(
&ctx.http,
if link_validated {
&url
} else {
"The stroke order diagram for this kanji is unavailable."
},
)
.await?;
Ok(())
}
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async fn random_kanji(
category: &str,
ctx: &Context,
msg: &Message,
mut args: Args,
) -> CommandResult {
let mut lists_file = File::open("kanji_lists.json").unwrap();
let mut lists_json = String::new();
lists_file.read_to_string(&mut lists_json).unwrap();
let lists_data: Value = serde_json::from_str(&lists_json).unwrap();
let category = &lists_data[category];
let default_version = category["default"].as_str().unwrap();
let list = &category["versions"][default_version]["characters"];
match list.as_str() {
Some(string) => {
let kanji = random_from_string(string);
display_kanji(&ctx, &msg, kanji, "").await?;
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}
None => {
let subcategory = args.single::<String>();
let subcategories = list.as_object().unwrap();
let subcategory_list = {
let mut string = String::from("\n");
let mut total_count = 0;
for subcategory in subcategories.keys() {
let subcategory = subcategory.as_str();
// One has to do .chars().count() as opposed to .len() here,
// because .len() returns the byte length NOT the number of characters.
// For kanji, they are always multi-byte Unicode characters.
let count = &subcategories[subcategory].as_str().unwrap().chars().count();
total_count += count;
string.push_str(&format!("**{}** ({} kanji),\n", subcategory, count));
}
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string.push_str(&format!(
"or **all** ({} kanji total) for all subcategories",
total_count
));
string
};
match subcategory {
Ok(string) => {
let string = string.to_uppercase();
if string == "ALL" {
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let subcategory_key = subcategories
.keys()
.choose(&mut rand::thread_rng())
.unwrap();
let list = subcategories[subcategory_key].as_str().unwrap();
let kanji = random_from_string(&list);
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display_kanji(&ctx, &msg, kanji, &format!(", **{}**", subcategory_key))
.await?;
} else if subcategories.contains_key(&string) {
let list = list[&string].as_str().unwrap();
let kanji = random_from_string(&list);
display_kanji(&ctx, &msg, kanji, "").await?;
} else {
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let message = format!(
"That is an invalid subcategory. Please use {}.",
&subcategory_list
);
msg.reply(&ctx.http, message).await?;
}
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}
Err(_) => {
let mut message = String::from("Please specify a subcategory: ");
message.push_str(&subcategory_list);
msg.reply(&ctx.http, message).await?;
}
}
}
}
Ok(())
}
#[command]
async fn joyo(ctx: &Context, msg: &Message, args: Args) -> CommandResult {
random_kanji("JOYO", ctx, msg, args).await
}
#[command]
async fn jinmeiyo(ctx: &Context, msg: &Message, args: Args) -> CommandResult {
random_kanji("JINMEIYO", ctx, msg, args).await
}
#[command]
async fn kyoiku(ctx: &Context, msg: &Message, args: Args) -> CommandResult {
random_kanji("KYOIKU", ctx, msg, args).await
}
#[command]
async fn jlpt(ctx: &Context, msg: &Message, args: Args) -> CommandResult {
random_kanji("JLPT", ctx, msg, args).await
}
#[command]
async fn hyogai(ctx: &Context, msg: &Message, args: Args) -> CommandResult {
random_kanji("HYOGAI", ctx, msg, args).await
}
#[command]
async fn so(ctx: &Context, msg: &Message, args: Args) -> CommandResult {
const MAX_CHARS: i32 = 4;
let text = args.rest();
if text.is_empty() {
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msg.reply(
&ctx.http,
"Please provide some text you want the stroke order for.",
)
.await?;
return Ok(());
}
let mut displayed_characters: Vec<char> = Vec::new();
let mut displayed_character_count = 0;
for character in text.chars() {
if displayed_character_count >= MAX_CHARS {
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msg.channel_id
.say(
&ctx.http,
":warning: Maximum number of stroke order diagrams per command reached.",
)
.await?;
break;
}
if character.is_whitespace() || displayed_characters.contains(&character) {
continue;
}
// Don't show same character twice
displayed_characters.push(character);
displayed_character_count += 1;
display_kanji(&ctx, &msg, character, "").await?;
}
Ok(())
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}