35 lines
968 B
Nim
35 lines
968 B
Nim
import ../statemachine
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import ./error
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import ./finished
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import ./failed
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type PurchaseStarted* = ref object of PurchaseState
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method enterAsync*(state: PurchaseStarted) {.async.} =
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without purchase =? (state.context as Purchase):
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raiseAssert "invalid state"
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let clock = purchase.clock
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let market = purchase.market
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let failed = newFuture[void]()
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proc callback(_: RequestId) =
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failed.complete()
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let subscription = await market.subscribeRequestFailed(purchase.requestId, callback)
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let ended = clock.waitUntil(await market.getRequestEnd(purchase.requestId))
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try:
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let fut = await one(ended, failed)
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if fut.id == failed.id:
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ended.cancel()
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state.switch(PurchaseFailed())
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else:
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failed.cancel()
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state.switch(PurchaseFinished())
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await subscription.unsubscribe()
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except CatchableError as error:
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state.switch(PurchaseErrored(error: error))
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method description*(state: PurchaseStarted): string =
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"started"
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