// PRODUCTION DEPLOY NOTE: This migration (0008_offer_tier_schema.sql) is additive-only
// (ADD COLUMN IF NOT EXISTS, a guarded DO-block CHECK constraint, CREATE TABLE IF NOT
// EXISTS, and CREATE INDEX IF NOT EXISTS — no drops/truncates). Per CLAUDE.md Data
// Safety, this script MUST be run against PRODUCTION via SSH+docker exec BEFORE Phase
// 12 Wave 3 code (query layer reading offer_tier_services/tier_letter/public_price/
// category/ticket) is exercised against production data. This is the BLOCKING step
// for Plan 02. Idempotent — safe to re-run.
// Run: npx tsx scripts/push-12-offer-tier-schema.ts (with prod DATABASE_URL)
import postgres from "postgres";

async function push() {
  const databaseUrl = process.env.DATABASE_URL;
  if (!databaseUrl) {
    console.error("DATABASE_URL environment variable is required");
    process.exit(1);
  }

  const client = postgres(databaseUrl);

  try {
    console.log("Pushing offer tier schema migration (0008)...");

    // offer_macros: archive flag + short description + category/ticket dimensions +
    // structured transformation promise
    const offerMacrosColumns: Array<[string, string]> = [
      ["description", "text"],
      ["category", "text"],
      ["ticket", "text"],
      ["is_archived", "boolean NOT NULL DEFAULT false"],
      ["cliente_ideale", "text"],
      ["risultato", "text"],
      ["tempo", "text"],
      ["pain", "text"],
      ["metodo", "text"],
    ];

    for (const [column, type] of offerMacrosColumns) {
      try {
        await client.unsafe(
          `ALTER TABLE offer_macros ADD COLUMN IF NOT EXISTS ${column} ${type}`
        );
        console.log(`  ✓ offer_macros.${column} ready`);
      } catch (err: unknown) {
        if (err instanceof Error && err.message.includes("already exists")) {
          console.log(`  ✓ offer_macros.${column} already exists (skipped)`);
        } else {
          throw err;
        }
      }
    }

    // offer_micros: tier designation (A/B/C) + manual public price
    const offerMicrosColumns: Array<[string, string]> = [
      ["tier_letter", "text"],
      ["public_price", "numeric(10, 2)"],
    ];

    for (const [column, type] of offerMicrosColumns) {
      try {
        await client.unsafe(
          `ALTER TABLE offer_micros ADD COLUMN IF NOT EXISTS ${column} ${type}`
        );
        console.log(`  ✓ offer_micros.${column} ready`);
      } catch (err: unknown) {
        if (err instanceof Error && err.message.includes("already exists")) {
          console.log(`  ✓ offer_micros.${column} already exists (skipped)`);
        } else {
          throw err;
        }
      }
    }

    // CHECK constraint for tier_letter, guarded so it's safe to re-run.
    try {
      await client.unsafe(`
        DO $$
        BEGIN
          IF NOT EXISTS (
            SELECT 1 FROM pg_constraint WHERE conname = 'offer_micros_tier_letter_check'
          ) THEN
            ALTER TABLE offer_micros
              ADD CONSTRAINT offer_micros_tier_letter_check
              CHECK (tier_letter IS NULL OR tier_letter IN ('A', 'B', 'C'));
          END IF;
        END $$;
      `);
      console.log("  ✓ offer_micros_tier_letter_check constraint ready");
    } catch (err: unknown) {
      if (err instanceof Error && err.message.includes("already exists")) {
        console.log("  ✓ offer_micros_tier_letter_check already exists (skipped)");
      } else {
        throw err;
      }
    }

    // New junction table: tier (offer_micros) <-> unified services catalog.
    try {
      await client.unsafe(`
        CREATE TABLE IF NOT EXISTS offer_tier_services (
          tier_id text NOT NULL REFERENCES offer_micros(id) ON DELETE CASCADE,
          service_id text NOT NULL REFERENCES services(id) ON DELETE CASCADE,
          created_at timestamp with time zone DEFAULT now() NOT NULL,
          PRIMARY KEY (tier_id, service_id)
        )
      `);
      console.log("  ✓ offer_tier_services table ready");
    } catch (err: unknown) {
      if (err instanceof Error && err.message.includes("already exists")) {
        console.log("  ✓ offer_tier_services table already exists (skipped)");
      } else {
        throw err;
      }
    }

    try {
      await client.unsafe(`
        CREATE INDEX IF NOT EXISTS offer_tier_services_tier_idx ON offer_tier_services USING btree (tier_id)
      `);
      console.log("  ✓ offer_tier_services_tier_idx index ready");
    } catch (err: unknown) {
      if (err instanceof Error && err.message.includes("already exists")) {
        console.log("  ✓ offer_tier_services_tier_idx already exists (skipped)");
      } else {
        throw err;
      }
    }

    console.log("✓ Migration 0008 (offer tier schema) applied successfully");
    process.exit(0);
  } catch (err: unknown) {
    if (err instanceof Error) {
      console.error("Error pushing migration:", err.message);
    } else {
      console.error("Unknown error:", err);
    }
    process.exit(1);
  } finally {
    await client.end();
  }
}

push();