Marc Mintel
5397309103
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51 lines
2.4 KiB
Plaintext
51 lines
2.4 KiB
Plaintext
import { Merge } from "./utils.js";
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import { ItemType, RelationalFields } from "./schema.js";
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import { LiteralFields } from "./fields.js";
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//#region src/types/functions.d.ts
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/**
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* Available query functions
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*/
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type DateTimeFunctions = 'year' | 'month' | 'week' | 'day' | 'weekday' | 'hour' | 'minute' | 'second';
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type ArrayFunctions = 'count';
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type QueryFunctions = {
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datetime: DateTimeFunctions;
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json: ArrayFunctions;
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csv: ArrayFunctions;
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};
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/**
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* Permute [function, field] combinations
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*/
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type PermuteFields<Fields, Funcs> = Fields extends string ? Funcs extends string ? [Fields, Funcs] : never : never;
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/**
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* Get all many relations on an item
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*/
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type RelationalFunctions<Schema, Item> = keyof { [Key in RelationalFields<Schema, Item> as Extract<Item[Key], ItemType<Schema>> extends any[] ? Key : never]: Key };
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/**
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* Create a map of function fields and their resulting output names
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*/
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type TranslateFunctionFields<Fields, Funcs> = { [F in PermuteFields<Fields, Funcs> as `${F[1]}(${F[0]})`]: `${F[0]}_${F[1]}` };
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/**
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* Combine the various function types
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*/
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type FunctionFields<Schema, Item> = { [Type in keyof QueryFunctions]: TypeFunctionFields<Item, Type> }[keyof QueryFunctions] | keyof TranslateFunctionFields<RelationalFunctions<Schema, Item>, ArrayFunctions>;
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/**
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*
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*/
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type TypeFunctionFields<Item, Type$1 extends keyof QueryFunctions> = keyof TranslateFunctionFields<LiteralFields<Item, Type$1>, QueryFunctions[Type$1]>;
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/**
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* Map all possible function fields on an item
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*/
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type MappedFunctionFields<Schema, Item> = Merge<TranslateFunctionFields<RelationalFunctions<Schema, Item>, ArrayFunctions>, TranslateFunctionFields<LiteralFields<Item, 'datetime'>, DateTimeFunctions> & TranslateFunctionFields<LiteralFields<Item, 'json' | 'csv'>, ArrayFunctions>>;
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/**
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* Create a map of function fields with its original field name
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*/
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type FunctionFieldNames<Fields, Funcs> = { [F in PermuteFields<Fields, Funcs> as `${F[1]}(${F[0]})`]: F[0] };
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/**
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* Map all possible function fields to name on an item
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*/
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type MappedFieldNames<Schema, Item> = Merge<FunctionFieldNames<RelationalFunctions<Schema, Item>, ArrayFunctions>, FunctionFieldNames<LiteralFields<Item, 'datetime'>, DateTimeFunctions> & FunctionFieldNames<LiteralFields<Item, 'json' | 'csv'>, ArrayFunctions>>;
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//#endregion
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export { ArrayFunctions, DateTimeFunctions, FunctionFields, MappedFieldNames, MappedFunctionFields, PermuteFields, QueryFunctions, TypeFunctionFields };
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//# sourceMappingURL=functions.d.ts.map |