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/**
* @typedef {{type: string, name: string, rawName: string, required: boolean, kind: "path" | "query" | "json", swiftType?: string, parent: Prop?}} Prop
*/
// In Twitter's API documentation, paste it into the Chrome DevTools console and run it.
(function () {
/**
* @returns {{className: string, method: string}}
*/
function createClassNameAndMethod() {
const title = document.querySelector("h1").textContent
const titleTokens = title.split("/")
// GET /2/tweets/:id/retweeted_by -> GET /tweets/retweeted_by -> GetTweetsRetweetedByRequestV2
const removed = titleTokens.filter(s => !s.startsWith(":") && s !== "2").join("/")
const tokens = removed.replace(/([A-Z]+) /g, "$1/").replace("_", "/").split("/")
let name = tokens.reduce((prev, current) => {
const low = current.toLowerCase()
return prev + low.charAt(0).toUpperCase() + low.slice(1);
}, "").replace("Id", "ID")
// GET /2/tweets -> GetTweetsRequestV2
// GET /2/tweets/:id -> GetTweetRequestV2
if (name.endsWith("s") && titleTokens[titleTokens.length - 1] === ":id") {
name = name.slice(0, -1)
}
const className = name + "RequestV2"
const method = tokens[0].toLowerCase()
return { className, method }
}
function createURL() {
const url = Array(...document.querySelectorAll("h3")).find(elem => elem.innerText === "Endpoint URL").nextElementSibling.textContent
return url.split("/").map(s => {
if (s.startsWith(":")) {
const camel = s.replace(":", "").split("_").reduce((prev, current) => {
if (prev.length === 0) {
return current
}
return prev + current.charAt(0).toUpperCase() + current.slice(1)
}, "").replace("Id", "ID")
return "\\(" + camel + ")"
}
return s
}).join("/")
}
/**
* // Path parameters or Query parameters
* @param {string} name
* @returns {HTMLTableRowElement[]}
*/
function getParameterTableRows(name) {
const pathParamHeading = Array(...document.querySelectorAll("h3")).find(elem => elem.innerText === name)
if (!pathParamHeading) {
return []
}
const maybeTable = pathParamHeading.nextElementSibling
if (maybeTable instanceof HTMLTableElement) {
return Array(...maybeTable.rows)
}
return []
}
/**
*
* @param {Prop} prop
*/
function bindSwiftType(prop) {
function toType() {
if (prop.name === "ids" && prop.type === "string"
|| prop.rawName.endsWith("_ids") && prop.type === "string"
||prop.rawName.endsWith("_ids") && prop.type === "array") {
return "[String]"
}
if (prop.name === "expansions") {
if (prop.type.includes("enum (attachments.poll_ids, attachments.media_keys")) {
return "Set<TwitterTweetExpansionsV2>"
} else if (prop.type.includes("enum (pinned_tweet_id")) {
return "Set<TwitterUserExpansionsV2>"
} else if (prop.type.includes("enum (owner_id)")) {
return "Set<TwitterListExpansionsV2>"
} else if (prop.type.includes("enum (invited_user_ids, speaker_ids, creator_id, host_ids)")) {
return "Set<TwitterSpaceExpansionsV2>"
}
}
const nameToType = {
"media.fields": "Set<TwitterMediaFieldsV2>",
"place.fields": "Set<TwitterPlaceFieldsV2>",
"poll.fields": "Set<TwitterPollFieldsV2>",
"tweet.fields": "Set<TwitterTweetFieldsV2>",
"user.fields": "Set<TwitterUserFieldsV2>",
"list.fields": "Set<TwitterListFieldsV2>",
"space.fields": "Set<TwitterSpaceFieldsV2>",
"topic.fields": "Set<TwitterTopicFieldsV2>"
}
const typeToSwiftType = {
"integer": "Int",
"number": "Int",
"string": "String",
"date (ISO 8601)": "Date",
"boolean": "Bool"
}
return nameToType[prop.rawName] ?? typeToSwiftType[prop.type]
}
const type = toType()
if (type) {
prop.swiftType = type
} else {
console.warn("Unkown type for", prop)
}
return prop
}
/**
* @param {HTMLTableRowElement[]} rows
* @param {"path" | "query" | "json"} kind
* @return {Prop[]}
*/
function pickupProps(rows, kind) {
/** @type {Prop[]} */
const init = []
return rows.slice(1).reduce((prev, row) => {
const [nameElem, typeElem] = row.children
const required = nameElem.querySelector("small").textContent.trim().toLowerCase() == "required"
const type = typeElem.textContent
const rawName = nameElem.querySelector("code").textContent
const name = rawName.replace(/[_.]./g,
function (s) {
return s.charAt(1).toUpperCase();
}).replace("Id", "ID")
const parent = rawName.includes(".") ? prev.find(p => p.rawName === rawName.split(".")[0]) : undefined
const prop = {
name,
rawName,
type,
required,
kind,
parent,
}
bindSwiftType(prop)
prev.push(prop)
return prev
}, init)
}
/**
*
* @param {Prop} prop
* @param {Prop[]} allProps
*/
function swiftPropertyString(prop, allProps) {
const type = prop.swiftType ?? "Unknown"
const optional = prop.required ? "" : "?"
const properties = allProps.filter(p => p.parent && p.parent.name == prop.name)
.map(p => {
const name = p.name.replace(prop.name, "")
const replacedName = name.charAt(0).toLowerCase() + name.slice(1)
const replacedRawName = p.rawName.replace(prop.rawName + ".", "")
return { ...p, name: replacedName, rawName: replacedRawName }
})
const structName = properties.length > 0 ? prop.name.charAt(0).toUpperCase() + prop.name.slice(1) : undefined
const structStr = `
// The properties of ${prop.name} are such a struct. If enum is more suitable, please modify it.
public struct ${structName} {
${properties.map(p => swiftPropertyString(p, allPathProps)).join("\n")}
func bind(param: inout [String: Any]) {
var p = [String: Any]()
${properties.map(p => { return `p["${p.rawName}"]` }).join("\n")}
param["${prop.rawName}"] = p
}
}`
let string = `public let ${prop.name}: ${structName || type}${optional}`
if (properties.length > 0) {
string = `${structStr}
${string}
`
}
return string
}
/**
*
* @param {Prop[]} props
*/
function createParameterFunc(props) {
if (props.length === 0) {
return `open var parameters: [String: Any] {
return [:]
}`
}
const body = props.map(prop => {
const isPrimitiveType = prop.type === "string" || prop.type === "integer" || prop.type === "boolean"
const isArray = prop.swiftType === "[String]" || prop.swiftType === "[Int]"
const optional = prop.required ? "" : "?"
const join = isArray ? `.joined(separator: ",")` : ""
if (isPrimitiveType) {
if (optional) {
return `${prop.name}.map { p["${prop.rawName}"] = $0${join} }`
}
return `p["${prop.rawName}"] = ${prop.name}${join}`
} else {
return `${prop.name}${optional}.bind(param: &p)`
}
})
return `open var parameters: [String: Any] {
var p = [String: Any]()
${body.join("\n ")}
return p
}`
}
/**
*
* @param {Prop[]} props
* @returns
*/
function createInitFunc(props) {
const initParams = props.map(p => {
const optional = p.required ? "" : "?"
const defaultArg = p.required ? "" : " = .none"
return `${p.name}: ${p.swiftType ?? "Unkown"}${optional}${defaultArg}`
})
const initBody = props.map(p => {
return `self.${p.name} = ${p.name}`
})
return `public init(
${initParams.join(",\n ")}
) {
${initBody.join("\n ")}
}`
}
const classNameAndMethod = createClassNameAndMethod()
const url = createURL()
const allPathProps = pickupProps(getParameterTableRows("Path parameters"), "path")
const allQueryProps = pickupProps(getParameterTableRows("Query parameters"), "query")
const allJsonProps = pickupProps(getParameterTableRows("JSON body parameters"), "json")
const topLevelPathProps = allPathProps.filter(p => !p.parent)
const topLevelQueryProps = allQueryProps.filter(p => !p.parent)
const topLevelJsonProps = allJsonProps.filter(p => !p.parent)
const props = [
...topLevelPathProps.map(p => swiftPropertyString(p, allPathProps)),
...topLevelQueryProps.filter(p => !p.parent).map(p => swiftPropertyString(p, allQueryProps)),
...topLevelJsonProps.filter(p => !p.parent).map(p => swiftPropertyString(p, allJsonProps))
]
const bodyContentType = allJsonProps.length === 0 ? "" :
`
public var bodyContentType: BodyContentType {
return .json
}
`
const parameterFunc = createParameterFunc([...topLevelQueryProps, ...topLevelJsonProps])
const initFunc = createInitFunc([...topLevelPathProps, ...topLevelQueryProps, ...topLevelJsonProps])
const source = `import Foundation
/// ${location.href}
open class ${classNameAndMethod.className}: TwitterAPIRequest {
${props.join("\n ")}
public var method: HTTPMethod {
return .${classNameAndMethod.method}
}
public var path: String {
return "${url.replace("https://api.twitter.com", "")}"
}
${bodyContentType}
${parameterFunc}
${initFunc}
}
`
console.log(source)
copy(source)
})()