const constants = require("../utils/constants") const db = require("../utils/db") const {render} = require("pinski/plugins") const {getUser, getToken} = require("../utils/getuser") const validate = require("../utils/validate") const V = validate.V const {Matcher, PatternCompileError} = require("../utils/matcher") const filterMaxLength = 160 const regexpEnabledText = constants.server_setup.allow_regexp_filters ? "" : "not" function getCategories(req) { const user = getUser(req) const filters = user.getFilters() // Sort filters into categories for display. Titles are already sorted. const categories = { title: {name: "Title", filters: []}, channel: {name: "Channel", filters: []} } for (const filter of filters) { if (filter.type === "title") { categories.title.filters.push(filter) } else { // filter.type is some kind of channel categories.channel.filters.push(filter) } } categories.channel.filters.sort((a, b) => { if (a.label && b.label) { if (a.label < b.label) return -1 else if (a.label > b.label) return 1 } return 0 }) return categories } module.exports = [ { route: "/filters", methods: ["GET"], code: async ({req, url}) => { const categories = getCategories(req) let referrer = url.searchParams.get("referrer") || null let type = null let contents = "" let label = null if (url.searchParams.has("title")) { type = "title" contents = url.searchParams.get("title") } else if (url.searchParams.has("channel-id")) { type = "channel-id" contents = url.searchParams.get("channel-id") label = url.searchParams.get("label") } return render(200, "pug/filters.pug", {categories, type, contents, label, referrer, filterMaxLength, regexpEnabledText}) } }, { route: "/filters", methods: ["POST"], upload: true, code: async ({req, body}) => { return new V() .with(validate.presetLoad({body})) .with(validate.presetURLParamsBody()) .with(validate.presetEnsureParams(["filter-type", "new-filter"])) .check(state => { // Extract fields state.type = state.params.get("filter-type") state.contents = state.params.get("new-filter").slice(0, filterMaxLength) state.label = state.params.get("label") if (state.label) { state.label = state.label.slice(0, filterMaxLength) } else { state.label = null } state.referrer = state.params.get("referrer") // Check type return ["title", "channel-name", "channel-id"].includes(state.type) }, () => ({ statusCode: 400, contentType: "application/json", content: { error: "type parameter is not in the list of filter types." } })) .check(state => { // If title, check that pattern compiles if (state.type === "title") { try { const matcher = new Matcher(state.contents) matcher.compilePattern() } catch (e) { if (e instanceof PatternCompileError) { state.compileError = e return false } throw e } } return true }, state => { const {type, contents, label, compileError} = state const categories = getCategories(req) return render(400, "pug/filters.pug", {categories, type, contents, label, compileError, filterMaxLength, regexpEnabledText}) }) .last(state => { const {type, contents, label} = state const responseHeaders = { Location: state.referrer || "/filters" } const token = getToken(req, responseHeaders) db.prepare("INSERT INTO Filters (token, type, data, label) VALUES (?, ?, ?, ?)").run(token, type, contents, label) return { statusCode: 303, headers: responseHeaders, contentType: "text/html", content: "Redirecting..." } }) .go() } }, { route: "/filters/delete", methods: ["POST"], upload: true, code: async ({req, body}) => { return new V() .with(validate.presetLoad({body})) .with(validate.presetURLParamsBody()) .with(validate.presetEnsureParams(["delete-id"])) .check(state => { state.deleteID = +state.params.get("delete-id") return !!state.deleteID }, () => ({ statusCode: 400, contentType: "application/json", content: { error: "delete-id parameter must be a number" } })) .last(state => { const {deleteID} = state const token = getToken(req) // the IDs are unique, but can likely be guessed, so also use the token for actual authentication db.prepare("DELETE FROM Filters WHERE token = ? and id = ?").run(token, deleteID) return { statusCode: 303, headers: { Location: "/filters" }, contentType: "text/html", content: "Redirecting..." } }) .go() } } ]