import { describe, expect, test } from "bun:test";

import { modelQuoteRequest, priceTiersForCurrentSelection, requestCreditCost } from "../src/lib/model-pricing";
import type { ModelRequirements } from "../src/lib/model-selection";
import { createModelChannel, defaultConfig, normalizeConfigSnapshot, resolveModelChannel, type AiConfig } from "../src/stores/use-config-store";

function systemConfig(input: { capability?: "image" | "video"; logicalModelId?: string; tiers: Array<{ selector: Record<string, string>; billingMode: "fixed_request" | "per_second" | "token"; unitPriceMicrocredits: number }> }) {
    const capability = input.capability || "video";
    const model = capability === "video" ? "agnes-video-2.5" : "image-model";
    const channel = createModelChannel({
        id: "system-channel",
        name: "系统渠道",
        scope: "system",
        baseUrl: "/api/system-channel",
        apiKey: "system",
        apiFormat: "openai",
        models: [model],
        modelCosts: [
            {
                model,
                capability,
                pricePolicy: "channel",
                billingMode: input.tiers[0]?.billingMode || "fixed_request",
                unitPriceMicrocredits: input.tiers[0]?.unitPriceMicrocredits || 0,
                logicalModelId: input.logicalModelId,
                logicalPriceTiers: input.tiers.map((tier) => ({
                    ...tier,
                    resolution: tier.selector.vquality || "*",
                    videoSeconds: Number(tier.selector.videoSeconds || 0),
                    inputTokenPriceMicrocredits: 0,
                    outputTokenPriceMicrocredits: 0,
                    cachedTokenPriceMicrocredits: 0,
                })),
            },
        ],
    });
    return normalizeConfigSnapshot({
        config: {
            ...defaultConfig,
            channels: [channel],
            model: `${channel.id}::${model}`,
            imageModel: capability === "image" ? `${channel.id}::${model}` : defaultConfig.imageModel,
            videoModel: capability === "video" ? `${channel.id}::${model}` : defaultConfig.videoModel,
            quality: "high",
            size: "16:9",
            vquality: "720P",
            videoSeconds: "5",
            count: "3",
        },
    }).config;
}

const textVideoRequirements: ModelRequirements = {
    capability: "video",
    input: { textCount: 1, imageCount: 0, videoCount: 0, audioCount: 0, characterCount: 0 },
    videoSeconds: "5",
    options: { size: "16:9", vquality: "720", videoSeconds: 5 },
};

describe("model request pricing", () => {
    test("matches the current Agnes resolution and duration tier and totals per-second credits", () => {
        const config = systemConfig({
            tiers: [
                { selector: { operation: "text_to_video", vquality: "720p", videoSeconds: "5" }, billingMode: "per_second", unitPriceMicrocredits: 25_000 },
                { selector: { operation: "text_to_video", vquality: "960p", videoSeconds: "5" }, billingMode: "per_second", unitPriceMicrocredits: 40_000 },
                { selector: { operation: "image_to_video", vquality: "720p", videoSeconds: "5", imageCount: "1" }, billingMode: "per_second", unitPriceMicrocredits: 30_000 },
            ],
        });
        const channel = resolveModelChannel(config, config.model);

        expect(
            requestCreditCost({
                channelMode: "remote",
                modelCosts: channel.modelCosts,
                model: "agnes-video-2.5",
                capability: "video",
                config,
                requirements: textVideoRequirements,
                seconds: "5",
            }),
        ).toBe(0.125);
    });

    test("uses reference count and operation to avoid a text-video price tier", () => {
        const config = systemConfig({
            tiers: [
                { selector: { operation: "text_to_video", vquality: "720p", videoSeconds: "5" }, billingMode: "per_second", unitPriceMicrocredits: 25_000 },
                { selector: { operation: "image_to_video", vquality: "720p", videoSeconds: "5", imageCount: "1" }, billingMode: "per_second", unitPriceMicrocredits: 30_000 },
            ],
        });
        const requirements: ModelRequirements = {
            ...textVideoRequirements,
            input: { ...textVideoRequirements.input!, imageCount: 1 },
        };
        const matched = priceTiersForCurrentSelection(resolveModelChannel(config, config.model).modelCosts![0]!.logicalPriceTiers!, "video", config, requirements);

        expect(matched).toHaveLength(1);
        expect(matched[0]?.unitPriceMicrocredits).toBe(30_000);
    });

    test("multiplies fixed image request pricing by output count", () => {
        const config = systemConfig({
            capability: "image",
            tiers: [{ selector: { quality: "high", size: "16:9" }, billingMode: "fixed_request", unitPriceMicrocredits: 10_000 }],
        });
        const channel = resolveModelChannel(config, config.model);

        expect(
            requestCreditCost({
                channelMode: "remote",
                modelCosts: channel.modelCosts,
                model: "image-model",
                capability: "image",
                config,
                requirements: { capability: "image" },
                count: 3,
            }),
        ).toBe(0.03);
    });

    test("builds a logical-model quote using the normalized current request", () => {
        const config = systemConfig({
            logicalModelId: "logical-video-1",
            tiers: [{ selector: {}, billingMode: "per_second", unitPriceMicrocredits: 25_000 }],
        });
        const quote = modelQuoteRequest(config, config.model, "video", textVideoRequirements);

        expect(quote).toMatchObject({
            logicalModelID: "logical-video-1",
            intent: {
                capability: "video",
                operation: "text_to_video",
                inputs: { image: 0, video: 0, audio: 0 },
                options: { vquality: "720", videoSeconds: 5 },
            },
        });
    });
});