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| 1 | +import { shallowRef, watch, onUnmounted } from 'vue'; |
| 2 | +import { useSpacetimeDB } from './useSpacetimeDB'; |
| 3 | +import type { UntypedProcedureDef } from '../sdk/procedures'; |
| 4 | +import type { |
| 5 | + ProcedureParamsType, |
| 6 | + ProcedureReturnType, |
| 7 | +} from '../sdk/type_utils'; |
| 8 | + |
| 9 | +export function useProcedure<ProcedureDef extends UntypedProcedureDef>( |
| 10 | + procedureDef: ProcedureDef |
| 11 | +): ( |
| 12 | + ...params: ProcedureParamsType<ProcedureDef> |
| 13 | +) => Promise<ProcedureReturnType<ProcedureDef>> { |
| 14 | + const conn = useSpacetimeDB(); |
| 15 | + const procedureName = procedureDef.accessorName; |
| 16 | + |
| 17 | + const queueRef = shallowRef< |
| 18 | + { |
| 19 | + params: ProcedureParamsType<ProcedureDef>; |
| 20 | + resolve: (val: any) => void; |
| 21 | + reject: (err: unknown) => void; |
| 22 | + }[] |
| 23 | + >([]); |
| 24 | + |
| 25 | + const stopWatch = watch( |
| 26 | + () => conn.isActive, |
| 27 | + () => { |
| 28 | + const connection = conn.getConnection(); |
| 29 | + if (!connection) return; |
| 30 | + |
| 31 | + const fn = (connection.procedures as any)[procedureName] as ( |
| 32 | + ...p: ProcedureParamsType<ProcedureDef> |
| 33 | + ) => Promise<ProcedureReturnType<ProcedureDef>>; |
| 34 | + if (queueRef.value.length) { |
| 35 | + const pending = queueRef.value.splice(0); |
| 36 | + for (const item of pending) { |
| 37 | + fn(...item.params).then(item.resolve, item.reject); |
| 38 | + } |
| 39 | + } |
| 40 | + }, |
| 41 | + { immediate: true } |
| 42 | + ); |
| 43 | + |
| 44 | + onUnmounted(() => { |
| 45 | + stopWatch(); |
| 46 | + }); |
| 47 | + |
| 48 | + return (...params: ProcedureParamsType<ProcedureDef>) => { |
| 49 | + const connection = conn.getConnection(); |
| 50 | + if (!connection) { |
| 51 | + return new Promise<ProcedureReturnType<ProcedureDef>>( |
| 52 | + (resolve, reject) => { |
| 53 | + queueRef.value.push({ params, resolve, reject }); |
| 54 | + } |
| 55 | + ); |
| 56 | + } |
| 57 | + const fn = (connection.procedures as any)[procedureName] as ( |
| 58 | + ...p: ProcedureParamsType<ProcedureDef> |
| 59 | + ) => Promise<ProcedureReturnType<ProcedureDef>>; |
| 60 | + return fn(...params); |
| 61 | + }; |
| 62 | +} |
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