import { describe, expect, test } from "bun:test"
import { readFileSync } from "node:fs"
import { join } from "node:path"

import { indexClaims } from "./claims-index.mjs"
import { bindingChecks } from "./fidelity-binding.mjs"
import { buildContext } from "./gates-static.mjs"
import { parseHtml } from "./html-lite.mjs"

type Defect = { code: string; message: string }

const FIX = join(import.meta.dir, "tests", "fixtures", "fidelity")
const LEDGER = JSON.parse(readFileSync(join(FIX, "ledger-verify.json"), "utf8"))
const CLAIMS = indexClaims(readFileSync(join(FIX, "claim-graph.md"), "utf8"))

function run(body: string, claims: unknown = CLAIMS): Defect[] {
	const html = /<h2/.test(body) ? body : `<h2>Findings</h2>\n${body}`
	return bindingChecks(buildContext(parseHtml(html), {}), claims, LEDGER) as Defect[]
}

const codes = (defects: Defect[]) => defects.map((defect) => defect.code)
const fact = (id: string, text: string) => `<data class="fact" data-fact="${id}">${text}</data>`

describe("sentence binding", () => {
	test("#given a findings paragraph with no marker #when checked #then unbound_sentence", () => {
		expect(codes(run("<p>The bridge is popular with tourists.</p>"))).toEqual(["unbound_sentence"])
	})

	test("#given the same paragraph marked as opinion #when checked #then clean", () => {
		expect(run('<p data-kind="opinion">The bridge is popular with tourists.</p>')).toEqual([])
	})

	test("#given a citation, a fact, or a claim on each sentence #when checked #then clean", () => {
		const body = `<p>Tourism grew [S4]. Units reached ${fact("F2", "1,237")}.</p><p data-claim="C1">The design follows the standard.</p>`
		expect(run(body)).toEqual([])
	})

	test("#given one unbound sentence after a cited one #when checked #then only that sentence is flagged", () => {
		expect(codes(run("<p>Tourism grew [S4]. Everyone loves it.</p>"))).toEqual(["unbound_sentence"])
	})

	test("#given an unbound paragraph outside findings (appendix, closing, sources) #when checked #then out of scope", () => {
		const body = "<h2>Appendix</h2><p>Plain words.</p><h2>How this report was made</h2><p>Plain words.</p><h2>Sources</h2><p>Plain words.</p>"
		expect(run(body)).toEqual([])
	})
})

describe("claim status", () => {
	test("#given a data-claim id that is not in the claim index #when checked #then claim_status_invalid", () => {
		expect(codes(run('<p data-claim="C99">The design is the safest.</p>'))).toEqual(["claim_status_invalid"])
	})

	test("#given a refuted claim cited in findings #when checked #then claim_status_invalid", () => {
		expect(codes(run('<p data-claim="C3">The project finished early.</p>'))).toEqual(["claim_status_invalid"])
	})

	test("#given the refuted claim in a Contradictions section #when checked #then clean", () => {
		expect(run('<h2>Contradictions</h2><p data-claim="C3">The project finished early.</p>')).toEqual([])
	})

	test("#given a normal-risk partial claim not in verified-claims #when checked #then clean", () => {
		expect(run('<p data-claim="C2">Revenue grew about ten percent.</p>')).toEqual([])
	})

	test("#given a high-risk claim missing from verified-claims #when checked #then claim_status_invalid", () => {
		const claims = { claims: [{ claim_id: "C7", statement: "x", risk: "high", status: "supported", in_verified: false }], errors: [] }
		expect(codes(run('<p data-claim="C7">A strong statement.</p>', claims))).toEqual(["claim_status_invalid"])
	})
})

describe("conflicting readings", () => {
	test("#given two 12 % rows with YoY and QoQ periods in one sentence #when checked #then conflicting_readings", () => {
		const body = `<p>Revenue grew ${fact("F3", "12%")} and ${fact("F4", "12%")} [S4].</p>`
		expect(codes(run(body))).toEqual(["conflicting_readings"])
	})

	test("#given the two readings in separate sentences #when checked #then clean", () => {
		const body = `<p>Revenue grew ${fact("F3", "12%")} [S4]. Quarterly growth was ${fact("F4", "12%")} [S4].</p>`
		expect(run(body)).toEqual([])
	})
})