defmodule VavPipeline.Tablet30ScopeTest do
  @moduledoc """
  Tablet 30 (kohen Day 7, 2026-10-04) — every Hebrew question was answered
  against Bereishit 1:1. `ויאמר אלהים יהי אור` (1:3) and `ויהי ערב ויהי בקר`
  (1:5) came back with `sources: [Bereishit 1:1]` and roots marked "not in
  this verse". `extract_scope_from_question/1` ignored its argument.

  These tests send the Day-7 offerings through the real router and demand
  that the verse in the answer is the verse in the question.
  """

  use ExUnit.Case, async: false

  import Plug.Test
  import Plug.Conn

  alias VavPipeline.{HaltMonitor, L1Index, MannaLedger, ScopeResolver}
  alias VavPipeline.BigdeiKodesh.Router

  @opts Router.init([])

  setup_all do
    # The index builds in handle_continue; the first call waits for it.
    {verses, words} = L1Index.stats()
    assert verses == 5853, "L1Index built #{verses} verses, expected the WLC 5853"
    assert words > 10_000
    :ok
  end

  # ============================================================
  # ScopeResolver — the three ways a question names its verse
  # ============================================================
  describe "hebrew_tokens/1" do
    test "strips nikud and te'amim, splits maqaf, drops everything else" do
      assert ScopeResolver.hebrew_tokens("וַֽיְהִי־אֽוֹר ׃") == ["ויהי", "אור"]
      assert ScopeResolver.hebrew_tokens("What does בְּרֵאשִׁ֖ית mean?") == ["בראשית"]
      assert ScopeResolver.hebrew_tokens("Test query 3") == []
    end
  end

  describe "resolve/1 — quoted Torah" do
    test "the Day-7 offerings land on their own verses" do
      assert {:ok, %{book: "bereishit", chapter: 1, verse: 1}, :text_match} =
               ScopeResolver.resolve("בראשית ברא אלהים")

      assert {:ok, %{book: "bereishit", chapter: 1, verse: 1}, :text_match} =
               ScopeResolver.resolve("את השמים ואת הארץ")

      assert {:ok, %{book: "bereishit", chapter: 1, verse: 3}, :text_match} =
               ScopeResolver.resolve("ויאמר אלהים יהי אור")

      assert {:ok, %{book: "bereishit", chapter: 1, verse: 5}, :text_match} =
               ScopeResolver.resolve("ויהי ערב ויהי בקר")

      assert {:ok, %{book: "bereishit", chapter: 1, verse: 1}, :text_match} =
               ScopeResolver.resolve("ברא אלהים")
    end

    test "pointed text resolves the same as bare consonants" do
      assert {:ok, %{book: "bereishit", chapter: 1, verse: 3}, :text_match} =
               ScopeResolver.resolve("וַיֹּ֥אמֶר אֱלֹהִ֖ים יְהִ֣י א֑וֹר")
    end

    test "reaches past Bereishit — the Shema" do
      assert {:ok, %{book: "devarim", chapter: 6, verse: 4}, :text_match} =
               ScopeResolver.resolve("שמע ישראל יהוה אלהינו יהוה אחד")
    end

    test "a phrase found in several verses goes to the earliest in Torah order" do
      # שמע ישראל opens Devarim 5:1 before it opens 6:4.
      assert {:ok, %{book: "devarim", chapter: 5, verse: 1}, :text_match} =
               ScopeResolver.resolve("שמע ישראל")
    end

    test "Hebrew the Torah does not contain falls to the default, and says so" do
      assert {:ok, %{book: "bereishit", chapter: 1, verse: 1}, :default} =
               ScopeResolver.resolve("מחשב")
    end
  end

  describe "resolve/1 — explicit reference" do
    test "transliterated, English and Hebrew book names, colon or dot" do
      assert {:ok, %{book: "bereishit", chapter: 1, verse: 3}, :verse_reference} =
               ScopeResolver.resolve("What happens in bereishit 1:3?")

      assert {:ok, %{book: "shemot", chapter: 3, verse: 14}, :verse_reference} =
               ScopeResolver.resolve("Exodus 3.14")

      assert {:ok, %{book: "devarim", chapter: 6, verse: 4}, :verse_reference} =
               ScopeResolver.resolve("דברים 6:4")
    end

    test "a reference outranks quoted text" do
      assert {:ok, %{book: "devarim", chapter: 6, verse: 4}, :verse_reference} =
               ScopeResolver.resolve("devarim 6:4 — בראשית ברא אלהים")
    end

    test "a verse L1 does not have is a shogeg error, not a silent default" do
      assert {:error, {:invalid_reference, "devarim 99:1"}} =
               ScopeResolver.resolve("devarim 99:1")
    end
  end

  describe "resolve/1 — nothing to go on" do
    test "English defaults, and the resolution is :default" do
      assert {:ok, %{book: "bereishit", chapter: 1, verse: 1}, :default} =
               ScopeResolver.resolve("What is bereishit?")
    end
  end

  # ============================================================
  # Router — the verse in the answer is the verse in the question
  # ============================================================
  describe "POST /peah/ask" do
    setup do
      # halt_monitor_test leaves the monitor halted on some seeds; a halted
      # vessel answers 503 before the resolver is reached. Clear it, as
      # liveness_test does, so this file measures scope and nothing else.
      if HaltMonitor.halted?(), do: HaltMonitor.resolve("tablet30 test setup")
      write_provision(50)
      :ok
    end

    test "Day-7 Hebrew offerings are sourced from their own verses" do
      for {q, ref} <- [
            {"ויאמר אלהים יהי אור", "Bereishit 1:3"},
            {"ויהי ערב ויהי בקר", "Bereishit 1:5"},
            {"בראשית ברא אלהים", "Bereishit 1:1"}
          ] do
        conn = post_ask(q)
        body = Jason.decode!(conn.resp_body)

        assert conn.status == 200, "#{q}: #{conn.status} #{conn.resp_body}"
        assert [%{"ref" => ^ref} | _] = body["sources"], "#{q} sourced from #{inspect(body["sources"])}"
        assert body["processing"]["scope"]["resolved_by"] == "text_match"
        assert body["processing"]["scope"]["verse"]["ref"] == ref
        refute Map.has_key?(body["processing"]["scope"], "note")
      end
    end

    test "an explicit reference is honoured — the error text promised it" do
      conn = post_ask("bereishit 1:3")
      body = Jason.decode!(conn.resp_body)

      assert conn.status == 200
      assert [%{"ref" => "Bereishit 1:3"}] = body["sources"]
      assert body["processing"]["scope"]["resolved_by"] == "verse_reference"
    end

    test "a verse that does not exist is a 422 chatat, with the correction" do
      conn = post_ask("bereishit 99:1")
      body = Jason.decode!(conn.resp_body)

      assert conn.status == 422
      assert body["error"]["code"] == "KIYOR_VALIDATION_FAILED"
      assert body["error"]["guidance"]["issue"] =~ "INVALID_SCOPE"
      assert body["error"]["guidance"]["resubmit"] == true
    end

    test "a question with no verse in it confesses the default scope" do
      # In the test VM there is no Haskell Port, so the L1 fallback grounds
      # English against the default verse and answers 200 (day6_serving_test
      # holds the real-engine 422 shut). Whatever the status, the scope
      # report must say the verse was assumed, not heard.
      conn = post_ask("What is bereishit?")
      body = Jason.decode!(conn.resp_body)

      scope =
        case conn.status do
          200 -> body["processing"]["scope"]
          422 -> %{"resolved_by" => "default", "note" => "n/a", "verse" => body["error"]["guidance"]["scope_verse"]}
        end

      assert scope["resolved_by"] == "default"
      assert scope["verse"]["ref"] == "Bereishit 1:1"
      assert is_binary(scope["note"])
    end
  end

  # ------------------------------------------------------------
  # Helpers (shape from day6_serving_test.exs)
  # ------------------------------------------------------------

  defp write_provision(compute_units) do
    MannaLedger.reset()
    on_exit(fn -> MannaLedger.reset() end)
    today = Date.utc_today() |> Date.to_iso8601()
    expires = DateTime.utc_now() |> DateTime.add(6 * 3600) |> DateTime.to_iso8601()

    provision = %{
      "date" => today,
      "provision" => %{
        "compute_units" => compute_units,
        "memory_mb" => 512,
        "api_calls_external" => 5,
        "storage_delta_mb" => 2,
        "sanhedrin_panels_max" => 2
      },
      "type" => "regular",
      "expires_at" => expires,
      "written_by" => "tablet30_test",
      "written_at" => DateTime.utc_now() |> DateTime.to_iso8601()
    }

    path = VavPipeline.Manna.provision_file()
    File.mkdir_p!(Path.dirname(path))
    File.write!(path, Jason.encode!(provision))
    # Leave no provision behind: the Shema tests run at a fixed 2026-02-25
    # and read a dated file as MANNA_STALE.
    on_exit(fn -> File.rm(path) end)
    path
  end

  defp post_ask(question) do
    conn(:post, "/peah/ask", Jason.encode!(%{question: question}))
    |> put_req_header("content-type", "application/json")
    |> Router.call(@opts)
  end
end