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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,133 @@ | ||
| import { | ||
| and, | ||
| type Column, | ||
| eq, | ||
| gt, | ||
| gte, | ||
| lt, | ||
| lte, | ||
| ne, | ||
| not, | ||
| or, | ||
| type SQL, | ||
| sql, | ||
| } from "drizzle-orm"; | ||
| import { comment } from "~/utils"; | ||
| import type { KError } from "../error"; | ||
| import { type Expression, expression, type Operator } from "./filters"; | ||
|
|
||
| export type Filter = { | ||
| [key: string]: | ||
| | { | ||
| column: Column; | ||
| type: "int" | "float" | "date" | "string"; | ||
| isArray?: boolean; | ||
| } | ||
| | { column: Column; type: "enum"; values: string[]; isArray?: boolean }; | ||
| }; | ||
|
|
||
| export const parseFilters = (filter: string | undefined, config: Filter) => { | ||
| if (!filter) return undefined; | ||
| const ret = expression.parse(filter); | ||
| if (!ret.isOk) { | ||
| throw new Error("todo"); | ||
| // return { status: 422, message: `Invalid filter: ${filter}.`, details: ret } | ||
| } | ||
|
|
||
| return toDrizzle(ret.value, config); | ||
| }; | ||
|
|
||
| const opMap: Record<Operator, typeof eq> = { | ||
| eq: eq, | ||
| ne: ne, | ||
| gt: gt, | ||
| ge: gte, | ||
| lt: lt, | ||
| le: lte, | ||
| has: eq, | ||
| }; | ||
|
|
||
| const toDrizzle = (expr: Expression, config: Filter): SQL | KError => { | ||
| switch (expr.type) { | ||
| case "op": { | ||
| const where = `${expr.property} ${expr.operator} ${expr.value}`; | ||
| const prop = config[expr.property]; | ||
|
|
||
| if (!prop) { | ||
| return { | ||
| status: 422, | ||
| message: comment` | ||
| Invalid property: ${expr.property}. | ||
| Expected one of ${Object.keys(config).join(", ")}. | ||
| `, | ||
| details: { in: where }, | ||
| }; | ||
| } | ||
|
|
||
| if (prop.type !== expr.value.type) { | ||
| return { | ||
| status: 422, | ||
| message: comment` | ||
| Invalid value for property ${expr.property}. | ||
| Got ${expr.value.type} but expected ${prop.type}. | ||
| `, | ||
| details: { in: where }, | ||
| }; | ||
| } | ||
| if ( | ||
| prop.type === "enum" && | ||
| (expr.value.type === "enum" || expr.value.type === "string") && | ||
| !prop.values.includes(expr.value.value) | ||
| ) { | ||
| return { | ||
| status: 422, | ||
| message: comment` | ||
| Invalid value ${expr.value.value} for property ${expr.property}. | ||
| Expected one of ${prop.values.join(", ")} but got ${expr.value.value}. | ||
| `, | ||
| details: { in: where }, | ||
| }; | ||
| } | ||
|
|
||
| if (prop.isArray) { | ||
| if (expr.operator !== "has" && expr.operator !== "eq") { | ||
| return { | ||
| status: 422, | ||
| message: comment` | ||
| Property ${expr.property} is an array but you wanted to use the | ||
| operator ${expr.operator}. Only "has" is supported ("eq" is also aliased to "has") | ||
| `, | ||
| details: { in: where }, | ||
| }; | ||
| } | ||
| return sql`${expr.value.value} = any(${prop.column})`; | ||
| } | ||
| return opMap[expr.operator](prop.column, expr.value.value); | ||
| } | ||
| case "and": { | ||
| const lhs = toDrizzle(expr.lhs, config); | ||
| const rhs = toDrizzle(expr.rhs, config); | ||
| if ("status" in lhs) return lhs; | ||
| if ("status" in rhs) return rhs; | ||
| return and(lhs, rhs)!; | ||
| } | ||
| case "or": { | ||
| const lhs = toDrizzle(expr.lhs, config); | ||
| const rhs = toDrizzle(expr.rhs, config); | ||
| if ("status" in lhs) return lhs; | ||
| if ("status" in rhs) return rhs; | ||
| return or(lhs, rhs)!; | ||
| } | ||
| case "not": { | ||
| const lhs = toDrizzle(expr.expression, config); | ||
| if ("status" in lhs) return lhs; | ||
| return not(lhs); | ||
| } | ||
| default: | ||
| return exhaustiveCheck(expr); | ||
| } | ||
| }; | ||
|
|
||
| function exhaustiveCheck(v: never): never { | ||
| return v; | ||
| } |
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