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"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.compose = void 0;
const context_1 = require("./context");
// Based on the code in the MIT licensed `koa-compose` package.
const compose = (middleware, onError, onNotFound) => {
const middlewareLength = middleware.length;
return (context, next) => {
let index = -1;
return dispatch(0);
async function dispatch(i) {
if (i <= index) {
throw new Error('next() called multiple times');
}
let handler = middleware[i];
index = i;
if (i === middlewareLength && next)
handler = next;
if (!handler) {
if (context instanceof context_1.HonoContext && context.finalized === false && onNotFound) {
context.res = await onNotFound(context);
}
return context;
}
let res;
let isError = false;
try {
const tmp = handler(context, () => dispatch(i + 1));
res = tmp instanceof Promise ? await tmp : tmp;
}
catch (err) {
if (context instanceof context_1.HonoContext && onError) {
if (err instanceof Error) {
isError = true;
res = onError(err, context);
}
}
if (!res) {
throw err;
}
}
if (res && context instanceof context_1.HonoContext && (!context.finalized || isError)) {
context.res = res;
}
return context;
}
};
};
exports.compose = compose;
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