84 lines
2.4 KiB
Clojure
84 lines
2.4 KiB
Clojure
(ns examples.timer
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"Countdown timer example - demonstrates async commands.
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Mirrors bubbletea's stopwatch/timer examples."
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(:require [tui.core :as tui]
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[tui.events :as ev]))
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;; === Model ===
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(def initial-model
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{:seconds 10
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:running true
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:done false})
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;; === Update ===
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(defn update-fn [{:keys [model event]}]
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(cond
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;; Quit
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(or (ev/key= event \q)
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(ev/key= event \c #{:ctrl}))
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{:model model :events [(ev/quit)]}
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;; Timer tick - decrement timer
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(= (:type event) :timer-tick)
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(if (:running model)
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(let [new-seconds (dec (:seconds model))]
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(if (<= new-seconds 0)
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;; Timer done
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{:model (assoc model :seconds 0 :done true :running false)}
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;; Continue countdown
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{:model (assoc model :seconds new-seconds)
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:events [(ev/delayed-event 1000 {:type :timer-tick})]}))
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{:model model})
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;; Space - pause/resume
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(ev/key= event \space)
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(let [new-running (not (:running model))]
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{:model (assoc model :running new-running)
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:events (when new-running [(ev/delayed-event 1000 {:type :timer-tick})])})
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;; r - reset
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(ev/key= event \r)
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{:model (assoc model :seconds 10 :done false :running true)
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:events [(ev/delayed-event 1000 {:type :timer-tick})]}
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:else
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{:model model}))
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;; === View ===
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(defn format-time [seconds]
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(let [mins (quot seconds 60)
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secs (mod seconds 60)]
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(format "%02d:%02d" mins secs)))
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(defn view [{:keys [seconds running done]} _size]
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[:col {:gap 1}
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[:box {:border :rounded :padding [1 2]}
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[:col
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[:text {:bold true} "Countdown Timer"]
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[:text ""]
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[:text {:fg (cond
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done :green
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(< seconds 5) :red
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:else :cyan)
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:bold true}
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(if done
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"Time's up!"
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(format-time seconds))]
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[:text ""]
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[:text {:fg :gray}
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(cond
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done "Press r to restart"
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running "Running..."
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:else "Paused")]]]
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[:text {:fg :gray} "space: pause/resume r: reset q: quit"]])
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;; === Main ===
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(defn -main [& _args]
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(println "Starting timer...")
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(let [final-model (tui/run {:init initial-model
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:update update-fn
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:view view
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:init-events [(ev/delayed-event 1000 {:type :timer-tick})]})]
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(when (:done final-model)
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(println "Timer completed!"))))
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