146 lines
4.6 KiB
TypeScript
146 lines
4.6 KiB
TypeScript
// GammaDesk shared data model
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// ORATS-style options analytics types + Drizzle tables for auth.
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// Database: PostgreSQL
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import { z } from "zod";
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import { pgTable, text, serial, timestamp, pgEnum } from "drizzle-orm/pg-core";
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// ---------------------------------------------------------------------------
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// Auth - Users table (Drizzle + PostgreSQL)
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// ---------------------------------------------------------------------------
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export const users = pgTable("users", {
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id: serial("id").primaryKey(),
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name: text("name").notNull(),
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email: text("email").notNull().unique(),
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passwordHash: text("password_hash").notNull(),
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createdAt: timestamp("created_at", { mode: "date" }).defaultNow().notNull(),
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});
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export type User = typeof users.$inferSelect;
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export type NewUser = typeof users.$inferInsert;
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// ---------------------------------------------------------------------------
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// Symbols
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// ---------------------------------------------------------------------------
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export const symbolSchema = z.object({
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ticker: z.string(),
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name: z.string(),
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type: z.enum(["index", "etf", "equity"]),
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sector: z.string().optional(),
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});
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export type SymbolInfo = z.infer<typeof symbolSchema>;
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// ---------------------------------------------------------------------------
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// Summary card payload — what the Dashboard top row shows
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// ---------------------------------------------------------------------------
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export const summarySchema = z.object({
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ticker: z.string(),
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spot: z.number(),
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spotChange: z.number(), // absolute $ change vs prior close
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spotChangePct: z.number(),
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netGex: z.number(), // signed, in $ per 1% move
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gammaRegime: z.enum(["positive", "negative"]),
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hvl: z.number(), // High Volume Level / gamma flip
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callWall: z.number(),
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putWall: z.number(),
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ivRank: z.number(), // 0-100
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ivx: z.number(), // implied vol index, percent
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expectedMove: z.number(), // absolute $ expected move next session
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expectedMovePct: z.number(),
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skew: z.number(), // put skew minus call skew, percent points
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asOf: z.string(), // ISO timestamp
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});
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export type Summary = z.infer<typeof summarySchema>;
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// ---------------------------------------------------------------------------
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// GEX profile — bars by strike for the gamma-by-strike visualization
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// ---------------------------------------------------------------------------
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export const gexBarSchema = z.object({
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strike: z.number(),
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callGex: z.number(), // $ gamma exposure attributable to call OI
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putGex: z.number(), // negative or positive depending on sign convention
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netGex: z.number(),
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});
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export const gexProfileSchema = z.object({
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ticker: z.string(),
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spot: z.number(),
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hvl: z.number(),
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callWall: z.number(),
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putWall: z.number(),
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bars: z.array(gexBarSchema),
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asOf: z.string(),
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});
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export type GexBar = z.infer<typeof gexBarSchema>;
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export type GexProfile = z.infer<typeof gexProfileSchema>;
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// ---------------------------------------------------------------------------
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// Expirations matrix
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// ---------------------------------------------------------------------------
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export const expirationRowSchema = z.object({
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expiry: z.string(), // ISO date
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dte: z.number(),
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netGex: z.number(),
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ivx: z.number(),
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skew: z.number(),
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expectedMove: z.number(),
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expectedMovePct: z.number(),
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callWall: z.number(),
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putWall: z.number(),
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callSkew: z.number(), // for IV/skew curve chart
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putSkew: z.number(),
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});
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export const expirationsResponseSchema = z.object({
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ticker: z.string(),
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spot: z.number(),
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rows: z.array(expirationRowSchema),
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asOf: z.string(),
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});
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export type ExpirationRow = z.infer<typeof expirationRowSchema>;
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export type ExpirationsResponse = z.infer<typeof expirationsResponseSchema>;
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// ---------------------------------------------------------------------------
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// Screener
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// ---------------------------------------------------------------------------
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export const screenerPresetSchema = z.enum([
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"all",
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"negative-gamma",
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"high-iv-rank",
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"near-call-wall",
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"near-put-wall",
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"zero-dte",
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]);
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export type ScreenerPreset = z.infer<typeof screenerPresetSchema>;
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export const screenerRowSchema = z.object({
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ticker: z.string(),
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name: z.string(),
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spot: z.number(),
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spotChangePct: z.number(),
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netGex: z.number(),
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gammaRegime: z.enum(["positive", "negative"]),
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ivRank: z.number(),
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ivx: z.number(),
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callWall: z.number(),
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putWall: z.number(),
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distanceToCallWall: z.number(), // % away from spot (signed: + if wall above)
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distanceToPutWall: z.number(),
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expectedMovePct: z.number(),
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skew: z.number(),
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zeroDteNetGex: z.number(),
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});
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export type ScreenerRow = z.infer<typeof screenerRowSchema>;
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