import test from "node:test";
import assert from "node:assert/strict";

const intelligentRouting = await import("../../src/lib/combos/intelligentRouting.ts");

test("getStrategyCategory classifies intelligent and deterministic strategies correctly", () => {
  assert.equal(intelligentRouting.getStrategyCategory("auto"), "intelligent");
  assert.equal(intelligentRouting.getStrategyCategory("lkgp"), "intelligent");

  [
    "priority",
    "weighted",
    "round-robin",
    "context-relay",
    "random",
    "least-used",
    "cost-optimized",
    "strict-random",
    "fill-first",
    "p2c",
    "context-optimized",
  ].forEach((strategy) => {
    assert.equal(intelligentRouting.getStrategyCategory(strategy), "deterministic");
  });
});

test("filterCombosByStrategyCategory returns expected combo subsets", () => {
  const combos = [
    { id: "1", strategy: "auto" },
    { id: "2", strategy: "priority" },
    { id: "3", strategy: "lkgp" },
  ];

  assert.deepEqual(
    intelligentRouting.filterCombosByStrategyCategory(combos, "all").map((combo) => combo.id),
    ["1", "2", "3"]
  );
  assert.deepEqual(
    intelligentRouting
      .filterCombosByStrategyCategory(combos, "intelligent")
      .map((combo) => combo.id),
    ["1", "3"]
  );
  assert.deepEqual(
    intelligentRouting
      .filterCombosByStrategyCategory(combos, "deterministic")
      .map((combo) => combo.id),
    ["2"]
  );
});

test("combo strategies stay aligned between UI metadata and schema validation", async () => {
  const { ROUTING_STRATEGIES, ROUTING_STRATEGY_VALUES, normalizeRoutingStrategy } =
    await import("../../src/shared/constants/routingStrategies.ts");
  const { comboStrategySchema, createComboSchema } =
    await import("../../src/shared/validation/schemas.ts");
  const { comboSchema } = await import("../../src/shared/schemas/validation.ts");
  const { setRoutingStrategyInput } = await import("../../open-sse/mcp-server/schemas/tools.ts");
  const strategyValues = ROUTING_STRATEGIES.map((strategy) => strategy.value);

  assert.deepEqual(strategyValues, [...ROUTING_STRATEGY_VALUES]);
  assert.equal(new Set(strategyValues).size, ROUTING_STRATEGY_VALUES.length);
  assert.equal(strategyValues.includes("auto"), true);
  assert.equal(strategyValues.includes("lkgp"), true);
  assert.deepEqual(comboStrategySchema.options, [...ROUTING_STRATEGY_VALUES]);

  strategyValues.forEach((strategy) => {
    const parsed = createComboSchema.safeParse({
      name: `combo-${strategy}`,
      models: ["openai/gpt-4o-mini"],
      strategy,
    });
    assert.equal(parsed.success, true, `schema should accept strategy ${strategy}`);
    assert.equal(
      comboSchema.safeParse({
        name: `legacy-combo-${strategy}`,
        model: "openai/gpt-4o-mini",
        strategy,
        nodes: [{ connectionId: crypto.randomUUID() }],
      }).success,
      true,
      `legacy combo schema should accept strategy ${strategy}`
    );
    assert.equal(
      setRoutingStrategyInput.safeParse({ comboId: "combo", strategy }).success,
      true,
      `MCP set strategy schema should accept ${strategy}`
    );
  });

  assert.equal(normalizeRoutingStrategy("usage"), "least-used");
  assert.equal(normalizeRoutingStrategy("context"), "context-optimized");
  assert.equal(normalizeRoutingStrategy("unknown"), "priority");

  const invalidParse = createComboSchema.safeParse({
    name: "combo-invalid",
    models: ["openai/gpt-4o-mini"],
    strategy: "not-a-strategy",
  });
  assert.equal(invalidParse.success, false);
});

test("intelligent combo selection defaults only inside the intelligent filter", () => {
  const intelligentCombos = [
    { id: "combo-auto", strategy: "auto" },
    { id: "combo-lkgp", strategy: "lkgp" },
  ];

  const resolveSelectedCombo = ({ activeFilter, selectedIntelligentComboId }) => {
    const explicitlySelectedCombo =
      intelligentCombos.find((combo) => combo.id === selectedIntelligentComboId) || null;

    if (explicitlySelectedCombo) {
      return explicitlySelectedCombo;
    }

    return activeFilter === "intelligent" ? intelligentCombos[0] : null;
  };

  assert.equal(
    resolveSelectedCombo({ activeFilter: "all", selectedIntelligentComboId: null }),
    null
  );
  assert.equal(
    resolveSelectedCombo({ activeFilter: "intelligent", selectedIntelligentComboId: null })?.id,
    "combo-auto"
  );
  assert.equal(
    resolveSelectedCombo({
      activeFilter: "all",
      selectedIntelligentComboId: "combo-lkgp",
    })?.id,
    "combo-lkgp"
  );
});

test("sidebar visibility excludes the removed auto-combo item", async () => {
  const sidebarVisibility = await import("../../src/shared/constants/sidebarVisibility.ts");
  const omniProxySection = sidebarVisibility.SIDEBAR_SECTIONS.find(
    (section) => section.id === "omni-proxy"
  );

  assert.equal(
    (sidebarVisibility.HIDEABLE_SIDEBAR_ITEM_IDS as readonly string[]).includes("auto-combo"),
    false
  );
  assert.ok(omniProxySection);
  const items = sidebarVisibility.getSectionItems(omniProxySection);
  assert.equal(
    items.some((item) => (item.id as string) === "auto-combo"),
    false
  );
  assert.deepEqual(sidebarVisibility.normalizeHiddenSidebarItems(["auto-combo" as any, "home"]), [
    "home",
  ]);
});

test("intelligent routing helpers normalize config and build provider scores", () => {
  const normalizedConfig = intelligentRouting.normalizeIntelligentRoutingConfig({
    candidatePool: ["openai", "anthropic"],
    explorationRate: "0.25",
    modePack: "",
    routerStrategy: "",
    weights: { quota: 0.4 },
  });

  assert.deepEqual(normalizedConfig.candidatePool, ["openai", "anthropic"]);
  assert.equal(normalizedConfig.explorationRate, 0.25);
  assert.equal(normalizedConfig.modePack, "ship-fast");
  assert.equal(normalizedConfig.routerStrategy, "rules");
  assert.equal(normalizedConfig.weights.quota, 0.4);
  assert.equal(
    normalizedConfig.weights.health,
    intelligentRouting.DEFAULT_INTELLIGENT_WEIGHTS.health
  );

  const providerScores = intelligentRouting.buildIntelligentProviderScores({
    config: normalizedConfig,
  });

  assert.equal(providerScores.length, 2);
  assert.deepEqual(
    providerScores.map((entry) => ({
      provider: entry.provider,
      model: entry.model,
      score: entry.score,
      quotaWeight: entry.factors.quota,
    })),
    [
      { provider: "openai", model: "auto", score: 0.5, quotaWeight: 0.4 },
      { provider: "anthropic", model: "auto", score: 0.5, quotaWeight: 0.4 },
    ]
  );
});