forked from 2sys/phonograph
57 lines
1.5 KiB
Gleam
57 lines
1.5 KiB
Gleam
import gleam/dynamic/decode.{type Decoder}
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import gleam/json.{type Json}
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import gleam/option.{type Option, None, Some}
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pub type Encodable {
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Integer(Option(Int))
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Text(Option(String))
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Timestamptz(Option(String))
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Uuid(Option(String))
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}
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pub fn decoder() -> Decoder(Encodable) {
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use t <- decode.field("t", decode.string)
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case t {
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"Integer" -> {
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use c <- decode.field("c", decode.optional(decode.int))
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decode.success(Integer(c))
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}
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"Text" -> {
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use c <- decode.field("c", decode.optional(decode.string))
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decode.success(Text(c))
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}
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"Timestamptz" -> {
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use c <- decode.field("c", decode.optional(decode.string))
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decode.success(Timestamptz(c))
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}
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"Uuid" -> {
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use c <- decode.field("c", decode.optional(decode.string))
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decode.success(Uuid(c))
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}
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_ -> decode.failure(Text(Some("")), "Encodable")
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}
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}
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pub fn to_json(value: Encodable) -> Json {
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json.object([
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#(
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"t",
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json.string(case value {
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Integer(_) -> "Integer"
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Text(_) -> "Text"
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Timestamptz(_) -> "Timestamptz"
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Uuid(_) -> "Uuid"
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}),
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),
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#("c", case value {
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Integer(Some(inner)) -> json.int(inner)
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Integer(None) -> json.null()
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Text(Some(inner)) -> json.string(inner)
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Text(None) -> json.null()
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Timestamptz(Some(inner)) -> json.string(inner)
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Timestamptz(None) -> json.null()
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Uuid(Some(inner)) -> json.string(inner)
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Uuid(None) -> json.null()
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}),
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])
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}
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