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Fix simple_fsm

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This commit is contained in:
Temirkhan Myrzamadi 2020-02-03 20:53:12 +06:00
parent 7e34007a4d
commit 4002d8fbbc
1 changed files with 41 additions and 18 deletions
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59
examples/simple_fsm/src/main.rs
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@ -53,12 +53,39 @@ impl Display for User {
}
}
// ============================================================================
// [FSM - Finite-State Machine]
// ============================================================================
enum Fsm {
Start,
FullName,
Age,
FavouriteMusic,
}
impl Default for Fsm {
fn default() -> Self {
Self::Start
}
}
// ============================================================================
// [Our Session type]
// ============================================================================
#[derive(Default)]
struct Session {
user: User,
fsm: Fsm,
}
// ============================================================================
// [Control our FSM]
// ============================================================================
type Ctx = SessionHandlerCtx<Message, User>;
type Res = Result<SessionState<User>, RequestError>;
type Ctx = SessionHandlerCtx<Message, Session>;
type Res = Result<SessionState<Session>, RequestError>;
async fn send_favourite_music_types(ctx: &Ctx) -> Result<(), RequestError> {
ctx.bot
@ -72,12 +99,14 @@ async fn send_favourite_music_types(ctx: &Ctx) -> Result<(), RequestError> {
async fn start(ctx: Ctx) -> Res {
ctx.reply("Let's start! First, what's your full name?")
.await?;
ctx.session.state = Fsm::FullName;
Ok(SessionState::Next(ctx.session))
}
async fn full_name(mut ctx: Ctx) -> Res {
ctx.reply("What a wonderful name! Your age?").await?;
ctx.session.full_name = Some(ctx.update.text().unwrap().to_owned());
ctx.session.user.full_name = Some(ctx.update.text().unwrap().to_owned());
ctx.session.fsm = Fsm::Age;
Ok(SessionState::Next(ctx.session))
}
@ -85,7 +114,8 @@ async fn age(mut ctx: Ctx) -> Res {
match ctx.update.text().unwrap().parse() {
Ok(ok) => {
send_favourite_music_types(&ctx).await?;
ctx.session.age = Some(ok);
ctx.session.user.age = Some(ok);
ctx.session.fsm = Fsm::FavouriteMusic;
}
Err(_) => ctx.reply("Oh, please, enter a number!").await?,
}
@ -96,8 +126,8 @@ async fn age(mut ctx: Ctx) -> Res {
async fn favourite_music(mut ctx: Ctx) -> Res {
match ctx.update.text().unwrap().parse() {
Ok(ok) => {
ctx.session.favourite_music = Some(ok);
ctx.reply(format!("Fine. {}", ctx.session)).await?;
ctx.session.user.favourite_music = Some(ok);
ctx.reply(format!("Fine. {}", ctx.session.user)).await?;
Ok(SessionState::Exit)
}
Err(_) => {
@ -108,19 +138,12 @@ async fn favourite_music(mut ctx: Ctx) -> Res {
}
async fn handle_message(ctx: Ctx) -> Res {
if ctx.session.full_name.is_none() {
return full_name(ctx).await;
match ctx.session.fsm {
Fsm::Start => start(ctx).await,
Fsm::FullName => full_name(ctx).await,
Fsm::Age => age(ctx).await,
Fsm::FavouriteMusic => favourite_music(ctx).await,
}
if ctx.session.age.is_none() {
return age(ctx).await;
}
if ctx.session.favourite_music.is_none() {
return favourite_music(ctx).await;
}
Ok(SessionState::Exit)
}
// ============================================================================