const categoryMap: Record<string, string> = {
  SW: "Software Development",
  ITES: "IT Services",
  NET: "Networking",
  TELCOM: "Telecommunications",
  DRA: "Data & Research",
  CSE: "Security Services",
  HR: "Human Resources",
  PM: "Project Management",
  MRB: "Marketing & Branding",
  // ... other prefixes default to "Other"
};

// Parsing CSV with quoted fields
function parseCSVLine(line: string): string[] {
  const fields: string[] = [];
  let current = "";
  let inQuotes = false;

  for (let i = 0; i < line.length; i++) {
    const char = line[i];
    if (char === '"') {
      if (inQuotes && line[i + 1] === '"') {
        current += '"';
        i++;
      } else {
        inQuotes = !inQuotes;
      }
    } else if (char === "," && !inQuotes) {
      fields.push(current);
      current = "";
    } else {
      current += char;
    }
  }
  fields.push(current);
  return fields;
}

interface Opportunity {
  externalId: string;         // Source-specific ID
  source: "sam.gov" | "emma" | "rfpmart" | "govtribe";
  title: string;
  description: string;
  summary?: string;
  location: string;
  category: string;
  naicsCode?: string;
  setAside?: string;          // "Small Business", "8(a)", etc.
  postedDate: number;         // Unix timestamp
  expiryDate: number;         // Unix timestamp
  url: string;
  attachments?: Attachment[];
  eligibilityFlags?: string[];
  rawData: Record<string, unknown>;
  ingestedAt: number;
}

https://api.sam.gov/opportunities/v2/search

{
  "Accept": "application/json",
  "X-Api-Key": process.env.SAM_GOV_API_KEY
}

const params = new URLSearchParams({
  postedFrom: "2024-01-01",
  postedTo: "2024-12-31",
  limit: "100",
  offset: "0",
  ptype: "o",  // Opportunities only
});

// convex/ingestion.ts
import { action, internalMutation } from "./_generated/server";
import { v } from "convex/values";
import { internal } from "./_generated/api";

export const ingestFromSam = action({
  args: { daysBack: v.optional(v.number()) },
  handler: async (ctx, args) => {
    const apiKey = process.env.SAM_GOV_API_KEY;
    if (!apiKey) throw new Error("SAM_GOV_API_KEY not configured");

    const fromDate = new Date();
    fromDate.setDate(fromDate.getDate() - (args.daysBack ?? 7));

    const response = await fetch(
      `https://api.sam.gov/opportunities/v2/search?` +
      `api_key=${apiKey}&postedFrom=${fromDate.toISOString().split("T")[0]}&limit=100`,
      { headers: { Accept: "application/json" } }
    );

    if (!response.ok) {
      throw new Error(`SAM.gov API error: ${response.status}`);
    }

    const data = await response.json();
    let ingested = 0;
    let updated = 0;

    for (const opp of data.opportunitiesData ?? []) {
      const result = await ctx.runMutation(internal.rfps.upsert, {
        externalId: opp.noticeId,
        source: "sam.gov",
        title: opp.title ?? "Untitled",
        description: opp.description ?? "",
        location: opp.placeOfPerformance?.state ?? "USA",
        category: opp.naicsCode ?? "Unknown",
        postedDate: new Date(opp.postedDate).getTime(),
        expiryDate: new Date(opp.responseDeadLine).getTime(),
        url: `https://sam.gov/opp/${opp.noticeId}/view`,
        rawData: opp,
      });

      if (result.action === "inserted") ingested++;
      else updated++;
    }

    // Log ingestion
    await ctx.runMutation(internal.ingestion.logIngestion, {
      source: "sam.gov",
      status: "completed",
      recordsProcessed: data.opportunitiesData?.length ?? 0,
      recordsInserted: ingested,
      recordsUpdated: updated,
    });

    return { ingested, updated, source: "sam.gov" };
  },
});

// convex/rfps.ts (internal mutation)
export const upsert = internalMutation({
  args: {
    externalId: v.string(),
    source: v.string(),
    title: v.string(),
    description: v.string(),
    location: v.string(),
    category: v.string(),
    postedDate: v.number(),
    expiryDate: v.number(),
    url: v.string(),
    rawData: v.optional(v.any()),
  },
  handler: async (ctx, args) => {
    const existing = await ctx.db
      .query("rfps")
      .withIndex("by_external_id", (q) =>
        q.eq("externalId", args.externalId).eq("source", args.source)
      )
      .first();

    const now = Date.now();

    if (existing) {
      await ctx.db.patch(existing._id, { ...args, updatedAt: now });
      return { id: existing._id, action: "updated" as const };
    }

    const id = await ctx.db.insert("rfps", {
      ...args,
      ingestedAt: now,
      updatedAt: now,
    });
    return { id, action: "inserted" as const };
  },
});

const DISQUALIFIER_PATTERNS = [
  { pattern: /u\.?s\.?\s*(citizen|company|organization)\s*only/i, flag: "us-org-only" },
  { pattern: /onshore\s*(only|required)/i, flag: "onshore-required" },
  { pattern: /on-?site\s*(required|mandatory)/i, flag: "onsite-required" },
  { pattern: /security\s*clearance\s*required/i, flag: "clearance-required" },
  { pattern: /small\s*business\s*set[- ]aside/i, flag: "small-business-set-aside" },
];

function detectEligibilityFlags(text: string): string[] {
  return DISQUALIFIER_PATTERNS
    .filter(({ pattern }) => pattern.test(text))
    .map(({ flag }) => flag);
}

// convex/crons.ts
import { cronJobs } from "convex/server";
import { internal } from "./_generated/api";

const crons = cronJobs();

crons.interval(
  "ingest-sam-gov",
  { hours: 6 },
  internal.ingestion.ingestFromSam,
  { daysBack: 3 }
);

export default crons;