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If it were random per request, a slot offered at 10:00:01\n * could be gone at 10:00:09 when the patient says yes — and you'd spend an\n * afternoon hunting a bug that only exists in the mock.\n *\n * Routes (all POST):\n * /get-available-slots\n * /book-appointment\n * /create-support-ticket\n *\n * get-available-slots returns:\n * slot_count number of openings found\n * preference_matched \"no\" when we had nothing in the day/window asked for\n * (the slots returned are then nearest alternatives)\n * slots_spoken every option as one phrase, ready to read aloud\n * slots_data JSON array: id, label, and language-neutral parts,\n * used to map a patient's pick back to a slot_id and\n * to phrase times in a language other than English\n *\n * Request params it honours: timezone (full IANA name), limit, earliest_date\n * (YYYY-MM-DD floor, for \"anything after the 3rd\"), preferred_day_of_week,\n * preferred_time_of_day, exclude_slot_ids (comma-separated).\n *\n * Scenarios — append ?scenario=... to the tool URL in Retell:\n * slots: busy (~96% booked) · one · empty · 500 · slow (25s)\n * book: fail · taken (slot gone, self-rebooked race) · 500\n * ticket: fail\n */\n\ninterface ReqBody {\n timezone?: string;\n earliest_date?: string;\n limit?: number | string;\n exclude_slot_ids?: string;\n preferred_day_of_week?: string;\n preferred_time_of_day?: string;\n slot_id?: string;\n ticket_reason?: string;\n ticket_title?: string;\n}\n\n/** Everything the agent needs about one opening, built in a single pass. */\ninterface Slot {\n id: string;\n label: string;\n relative: \"tomorrow\" | \"none\";\n weekday: string;\n month: number;\n day: number;\n hour: number;\n minute: string;\n ampm: \"AM\" | \"PM\";\n period: \"morning\" | \"afternoon\" | \"evening\";\n}\n\n// 20-minute grid, 9:00 to 16:40 — a full clinic day, so gaps look real\nconst GRID: { h: number; m: number }[] = [];\nfor (let h = 9; h <= 16; h++) for (const m of [0, 20, 40]) GRID.push({ h, m });\n\nconst DOW = [\n \"sunday\",\n \"monday\",\n \"tuesday\",\n \"wednesday\",\n \"thursday\",\n \"friday\",\n \"saturday\",\n];\n\nconst WINDOW: Record boolean> = {\n morning: (h) => h < 12,\n midday: (h) => h >= 11 && h < 14,\n afternoon: (h) => h >= 12 && h < 17,\n evening: (h) => h >= 17,\n};\n\nconst json = (obj: unknown, status = 200) =>\n new Response(JSON.stringify(obj, null, 2), {\n status,\n headers: { \"content-type\": \"application/json\" },\n });\n\nconst pad = (n: number) => String(n).padStart(2, \"0\");\n\n/** Calendar Y/M/D as it currently reads in `tz`. */\nfunction todayIn(tz: string) {\n const [y, mo, d] = new Intl.DateTimeFormat(\"en-CA\", {\n timeZone: tz,\n year: \"numeric\",\n month: \"2-digit\",\n day: \"2-digit\",\n }).format(new Date()).split(\"-\").map(Number);\n return { y, mo, d };\n}\n\n/** FNV-1a. Stable across requests and restarts — that's the whole point. */\nfunction isFree(id: string, bookedPct: number): boolean {\n let h = 2166136261;\n for (let i = 0; i < id.length; i++) {\n h ^= id.charCodeAt(i);\n h = Math.imul(h, 16777619);\n }\n return (h >>> 0) % 100 >= bookedPct;\n}\n\n/**\n * Describe one slot: id, spoken label, and the language-neutral breakdown.\n *\n * `tomorrowYmd` is passed in rather than recomputed, and the weekday comes\n * from plain UTC arithmetic on the calendar date instead of a second Intl\n * call — the date is fixed, so there's nothing to localise.\n */\nfunction describeSlot(\n y: number,\n mo: number,\n d: number,\n h: number,\n mi: number,\n tz: string,\n tomorrowYmd: string,\n): Slot {\n const ymd = `${y}-${pad(mo)}-${pad(d)}`;\n const weekday = DOW[new Date(Date.UTC(y, mo - 1, d, 12)).getUTCDay()];\n const capWeekday = weekday[0].toUpperCase() + weekday.slice(1);\n\n const hour12 = h % 12 === 0 ? 12 : h % 12;\n const minute = pad(mi);\n const period = h < 12 ? \"morning\" : h < 17 ? \"afternoon\" : \"evening\";\n const monthName = new Intl.DateTimeFormat(\"en-US\", {\n timeZone: \"UTC\",\n month: \"long\",\n }).format(Date.UTC(y, mo - 1, d, 12));\n\n const when = ymd === tomorrowYmd\n ? \"tomorrow\"\n : `${capWeekday}, ${monthName} ${d}`;\n const clock = minute === \"00\" ? `${hour12}` : `${hour12}:${minute}`;\n\n return {\n id: `slot_${ymd}_${pad(h)}${minute}`,\n label: `${when} at ${clock} in the ${period}`,\n relative: ymd === tomorrowYmd ? \"tomorrow\" : \"none\",\n weekday: capWeekday,\n month: mo,\n day: d,\n hour: hour12,\n minute,\n ampm: h < 12 ? \"AM\" : \"PM\",\n period,\n };\n}\n\n/** Pipe-delimited form, kept for the confirmed_parts variable in Retell. */\nconst toParts = (s: Slot) =>\n `relative=${s.relative}|weekday=${s.weekday}|month=${s.month}|day=${s.day}` +\n `|hour=${s.hour}|minute=${s.minute}|ampm=${s.ampm}|period=${s.period}`;\n\n/**\n * Walk forward collecting open slots. `respectPreference` false ignores the\n * day/window filters — used for the fallback pass when the requested window\n * has nothing in it.\n */\nfunction findSlots(\n body: ReqBody,\n wanted: number,\n bookedPct: number,\n respectPreference: boolean,\n horizonDays: number,\n): Slot[] {\n const tz = body.timezone || \"America/New_York\";\n const excluded = new Set(\n String(body.exclude_slot_ids || \"\").split(\",\").map((s) => s.trim()).filter(\n Boolean,\n ),\n );\n const t = todayIn(tz);\n const tomorrowYmd = (() => {\n const dt = new Date(Date.UTC(t.y, t.mo - 1, t.d + 1, 12));\n return `${dt.getUTCFullYear()}-${pad(dt.getUTCMonth() + 1)}-${\n pad(dt.getUTCDate())\n }`;\n })();\n\n // earliest_date moves the floor. Never same-day, whatever was asked for.\n let start = 1;\n if (body.earliest_date && /^\\d{4}-\\d{2}-\\d{2}$/.test(body.earliest_date)) {\n const [ey, em, ed] = body.earliest_date.split(\"-\").map(Number);\n start = Math.max(\n 1,\n Math.round(\n (Date.UTC(ey, em - 1, ed, 12) - Date.UTC(t.y, t.mo - 1, t.d, 12)) /\n 86400000,\n ),\n );\n }\n\n const out: Slot[] = [];\n for (\n let off = start;\n off < start + horizonDays && out.length < wanted;\n off++\n ) {\n const cal = new Date(Date.UTC(t.y, t.mo - 1, t.d + off, 12));\n const dow = DOW[cal.getUTCDay()];\n if (dow === \"saturday\" || dow === \"sunday\") continue;\n if (\n respectPreference && body.preferred_day_of_week &&\n body.preferred_day_of_week.toLowerCase() !== dow\n ) continue;\n\n for (const g of GRID) {\n if (out.length >= wanted) break;\n if (respectPreference && body.preferred_time_of_day) {\n const inWindow = WINDOW[body.preferred_time_of_day.toLowerCase()];\n if (inWindow && !inWindow(g.h)) continue;\n }\n const slot = describeSlot(\n cal.getUTCFullYear(),\n cal.getUTCMonth() + 1,\n cal.getUTCDate(),\n g.h,\n g.m,\n tz,\n tomorrowYmd,\n );\n if (excluded.has(slot.id)) continue;\n if (!isFree(slot.id, bookedPct)) continue; // already taken\n out.push(slot);\n }\n }\n return out;\n}\n\nexport default async function handler(request: Request): Promise {\n const url = new URL(request.url);\n const scenario = (url.searchParams.get(\"scenario\") || \"\").toLowerCase();\n const route = url.pathname.replace(/\\/+$/, \"\").split(\"/\").pop() || \"\";\n\n let body: ReqBody = {};\n try {\n body = await request.json() as ReqBody;\n } catch { /* empty body is fine */ }\n\n console.log(`\\n[MOCK] ${route} scenario=${scenario || \"default\"}`);\n console.log(\"[MOCK] request body:\", JSON.stringify(body));\n\n if (scenario === \"slow\") await new Promise((r) => setTimeout(r, 25000));\n if (scenario === \"500\") return json({ error: \"mock upstream failure\" }, 500);\n\n if (route === \"get-available-slots\") {\n const bookedPct = scenario === \"busy\" ? 96 : 50;\n const wanted = scenario === \"one\"\n ? 1\n : Math.min(Number(body.limit) || 3, 3);\n const asked = Boolean(\n body.preferred_day_of_week || body.preferred_time_of_day,\n );\n\n // A weekday or window request means the NEAREST match, so a short\n // horizon — that's what makes \"we have nothing then\" actually happen.\n // An explicit earliest_date means \"from here onward\", so search wide.\n const horizon = body.earliest_date ? 28 : asked ? 7 : 21;\n\n let slots: Slot[] = [];\n let matched = \"yes\";\n if (scenario !== \"empty\") {\n slots = findSlots(body, wanted, bookedPct, true, horizon);\n if (slots.length === 0 && asked) {\n slots = findSlots(\n body,\n wanted,\n bookedPct,\n false,\n body.earliest_date ? 28 : 21,\n );\n matched = \"no\";\n console.log(\n \"[MOCK] no match for preference, returning nearest instead\",\n );\n }\n }\n\n const labels = slots.map((s) => s.label);\n const res = {\n slot_count: slots.length,\n preference_matched: slots.length === 0 ? \"no\" : matched,\n slots_spoken: labels.length < 2\n ? labels[0] ?? \"\"\n : `${labels.slice(0, -1).join(\", \")}, or ${labels[labels.length - 1]}`,\n slots_data: JSON.stringify(slots.map((s, i) => ({ n: i + 1, ...s }))),\n };\n console.log(\"[MOCK] ->\", JSON.stringify(res));\n return json(res);\n }\n\n if (route === \"book-appointment\") {\n const fail = (reason: string) => {\n console.log(\"[MOCK] booking failed:\", reason);\n return json({\n status: \"failed\",\n appointment_id: \"\",\n confirmed_time_label: \"\",\n confirmed_parts: \"\",\n failure_reason: reason,\n });\n };\n\n if (scenario === \"fail\") return fail(\"simulated system error\");\n if (scenario === \"taken\") return fail(\"slot was taken by someone else\");\n if (!body.slot_id) {\n return fail(\"no slot_id sent — agent never captured a time\");\n }\n\n const m = String(body.slot_id).match(\n /slot_(\\d{4})-(\\d{2})-(\\d{2})_(\\d{2})(\\d{2})/,\n );\n if (!m) return fail(`unrecognised slot_id: ${body.slot_id}`);\n\n const tz = body.timezone || \"America/New_York\";\n const t = todayIn(tz);\n const tm = new Date(Date.UTC(t.y, t.mo - 1, t.d + 1, 12));\n const tomorrowYmd = `${tm.getUTCFullYear()}-${pad(tm.getUTCMonth() + 1)}-${\n pad(tm.getUTCDate())\n }`;\n\n const [y, mo, d, h, mi] = m.slice(1).map(Number);\n const slot = describeSlot(y, mo, d, h, mi, tz, tomorrowYmd);\n const res = {\n status: \"booked\",\n appointment_id: `mock_appt_${Math.random().toString(36).slice(2, 10)}`,\n confirmed_time_label: slot.label,\n confirmed_parts: toParts(slot),\n };\n console.log(\"[MOCK] ->\", JSON.stringify(res));\n return json(res);\n }\n\n if (route === \"create-support-ticket\") {\n if (scenario === \"fail\") {\n return json({ status: \"failed\", ticket_number: \"\" });\n }\n console.log(\"[MOCK] ticket:\", body.ticket_reason, \"|\", body.ticket_title);\n return json({\n status: \"created\",\n ticket_number: `MOCK-${Math.floor(Math.random() * 90000 + 10000)}`,\n });\n }\n\n return json({ error: `unknown route: ${route}` }, 404);\n}","deleted",false,"label",[14],"228d812f-2f6f-4abb-aa3e-2003f251db82",["D",1787760088476],"deletedAt","legacyEnvVars","privacy","public","httpPrivacy","description","Mock data for Telehealth Rescheduling Retell Agent","imageUrl","userId","d34e5762-a383-4a65-8e61-121bfe9953ed","pinnedFileId","pinPreview","pinMigrated","screenshotVersion","likeCount",0,"orgId","01a03ecc-21a6-7246-bc7b-58759fb85f01","tursoName","tursoHostname","tursoMeasuredAt","pinned","userPerm","r","valPerm","blobPerm","rw","emailPerm","sqlitePerm","projectPerm","telemetryPerm","user",{"_9":10,"_101":97},"org",{"_9":10,"_94":95,"_96":97,"_55":56,"_98":99,"_100":42},"branch",{"_35":30,"_11":85,"_22":28,"_86":45,"_87":-5,"_88":-5,"_89":-5,"_90":-5,"_91":-5,"_92":12,"_93":10},"isOwned","main","projectId","forkedBranchId","forkedBranchVersion","forkedProjectPrivacy","forkedProjectId","forkedProjectOrgId","projectName","userHandle","displayName","Brian Lin","avatar","https://lh3.googleusercontent.com/a/ACg8ocLYRsSPaPx1LfX3i4Mu1-XM46PMTnF-DnJsU91sBEdCx2g1Jg=s96-c","tier","free","canRestrictVals","profileImageUrl","ctx",{"_78":-5,"_135":136,"_137":138,"_139":140,"_141":42,"_142":42,"_143":42,"_144":32,"_145":-5,"_146":-7,"_147":-7,"_148":62,"_149":42,"_150":42,"_151":-5,"_152":42,"_153":42,"_154":42,"_155":-5},"ENV",{"_106":107,"_108":109,"_110":85,"_111":112,"_113":114,"_115":116,"_117":118,"_119":120,"_121":122,"_123":124,"_125":126,"_127":128,"_129":130,"_131":132,"_133":134},"REACT_APP_SENTRY_DSN","https://586020d86f05489db63a554690acf1e9@o1398359.ingest.sentry.io/6724499","RENDER_GIT_COMMIT","e87eb04e707cf64e7e532c8e8ec395f209e17f15","RENDER_GIT_BRANCH","POSTHOG_API_TOKEN","phc_nmoyuAkStEZuUp69rYlg1DZgrIt19Gx0Y4Hwf8tGgJP","POSTHOG_API_HOST","https://wart.val.town","WEB_API_TEMPLATE","https://{val}.web.val.run","APP_URL","https://www.val.town","MODULE_URL","https://esm.town","VANITY_WEB_API_TEMPLATE","https://{label}.val.run/","DENOLS_URL","https://lsp.val.town","NODE_ENV","production","CLOUDFLARE_TURNSTILE_SITE_KEY","0x4AAAAAACtaIZJH7s9rBMZ6","GOOGLE_CLIENT_ID","875989696899-jtsqkhlbdv5jrlsk8631p7ipjg3c6o62.apps.googleusercontent.com","STRIPE_PUBLISHABLE_KEY","pk_live_51N2zvWEpZTTLipIkVEwXrUG9AT0yeOOEYxszarZT1jpsZV58Ly6wlg3SltZpHN26CUalOBmUSY7adQRQiSkCZz2500qSXNkf8Y","API_URL","https://api.val.town","orgs",[],"preferencesKeybindings","default","preferencesTheme","light","preferencesFixers","preferencesCopilot","preferencesSelectionAi","preferencesCloseBrackets","preferencesChatPanelState","preferencesDprint","preferencesDenofmt","notificationCount","flagDenols","isBusinessOrgMember","businessOrgHandle","isBusinessOrgAdmin","isHigherTownieTier","navCollapsed","currentOrgId"]