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collection-field.ts
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collection-field.ts
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import { predicates } from "@sealcode/ts-predicates";
import { Context } from "koa";
import { Depromisify, ExtractFieldDecoded, Field } from "sealious";
import { FormDataValue } from "../form-types.js";
import {
FieldParseResult,
FormField,
FormFieldValidationResponse,
} from "./field.js";
export class CollectionField<
// eslint-disable-next-line @typescript-eslint/no-explicit-any
F extends Field<any>,
Required extends boolean
> extends FormField<Required, ExtractFieldDecoded<F> | null> {
constructor(required: Required, public sealiousField: F) {
super(required);
}
predicate = predicates.unknown;
async parse(
ctx: Context,
raw_value: FormDataValue
): Promise<FieldParseResult<ExtractFieldDecoded<F> | null>> {
if (raw_value === undefined) {
return { parsable: true, parsed_value: null, error: null };
}
const encoded_value = (await this.sealiousField.encode(
ctx.$context,
raw_value
)) as Depromisify<ReturnType<F["encode"]>>;
const parsed_value = (await this.sealiousField.decode(
ctx.$context,
encoded_value,
null,
this.sealiousField.typeName == "text" ? "original" : {}
)) as ExtractFieldDecoded<F>;
return {
parsable: true,
error: null,
parsed_value,
};
}
public async isValueValid(
ctx: Context,
value: ExtractFieldDecoded<F>
): Promise<FormFieldValidationResponse> {
const { valid, reason } = await this.sealiousField.checkValue(
ctx.$context,
value,
undefined,
null
);
return { valid, message: reason || (!valid ? "Wrong value" : "") };
}
public getEmptyValue(): ExtractFieldDecoded<F> {
// eslint-disable-next-line @typescript-eslint/no-unsafe-return
return "" as unknown as ExtractFieldDecoded<F>;
}
}

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