use serde_json::json;
use shared_contracts::model3d::Model3dGenerationResult;
use shared_contracts::model3d::common::{
    Model3dGeneratedArtifact, Model3dGenerationSource, Model3dGenerationTarget,
    Model3dGenerationTargetRef,
};
use shared_contracts::model3d::image_to_model::Model3dImageToModelRequest;
use shared_contracts::model3d::text_to_model::Model3dTextToModelRequest;

#[test]
fn text_to_model_request_accepts_generation_and_target() {
    let request: Model3dTextToModelRequest = serde_json::from_value(json!({
        "generation": { "prompt": "一把木椅", "model": "v3.1-20260211", "texture": true },
        "target": { "kind": "assetLibrary", "folderId": "folder-1", "label": "木椅" }
    }))
    .expect("合法请求应可反序列化");

    assert_eq!(request.generation.prompt, "一把木椅");
    assert!(matches!(
        request.target,
        Model3dGenerationTarget::AssetLibrary { .. }
    ));
}

#[test]
fn target_requires_branch_local_fields() {
    for invalid in [
        json!({ "kind": "assetLibrary", "label": "木椅" }),
        json!({ "kind": "assetLibrary", "folderId": "folder-1" }),
        json!({ "kind": "projectResource" }),
    ] {
        let error = serde_json::from_value::<Model3dGenerationTarget>(invalid.clone())
            .expect_err("缺少分支必填字段应被拒绝");
        assert!(
            error.to_string().contains("missing field"),
            "缺少字段的报错应指出 missing field，输入 {invalid}，实际为：{error}"
        );
    }
}

#[test]
fn image_source_rejects_ambiguous_and_raw_input() {
    let both_ids = json!({
        "source": { "kind": "resource", "resourceId": "r1", "assetId": "a1" },
        "generation": { "model": "v3.1-20260211" },
        "target": { "kind": "assetLibrary", "folderId": "folder-1", "label": "木椅" }
    });
    let error = serde_json::from_value::<Model3dImageToModelRequest>(both_ids)
        .expect_err("同时给出资源与素材 ID 应被拒绝");
    assert!(
        error.to_string().contains("unknown field"),
        "同时给出两个 ID 应报 unknown field，实际为：{error}"
    );

    let raw_input = json!({
        "source": "https://example.com/a.png",
        "generation": { "model": "v3.1-20260211" },
        "target": { "kind": "assetLibrary", "folderId": "folder-1", "label": "木椅" }
    });
    let error = serde_json::from_value::<Model3dImageToModelRequest>(raw_input)
        .expect_err("裸字符串图片输入应被拒绝");
    // 拒绝必须发生在 source 本身：错误里点名 Model3dGenerationSource，避免将来
    // generation / target 的必填变化把这条负例“顶替”成通过。
    assert!(
        error.to_string().contains("Model3dGenerationSource"),
        "裸字符串 source 的报错应点名 Model3dGenerationSource，实际为：{error}"
    );

    // 同样把 source 单独反序列化一遍，锁死被拒的是图片输入的形状本身。
    serde_json::from_value::<Model3dGenerationSource>(json!("https://example.com/a.png"))
        .expect_err("裸字符串 source 值应被拒绝");
}

#[test]
fn api_request_rejects_unknown_top_level_fields() {
    let error = serde_json::from_value::<Model3dTextToModelRequest>(json!({
        "generation": { "prompt": "一把木椅", "model": "v3.1-20260211" },
        "target": { "kind": "assetLibrary", "folderId": "folder-1", "label": "木椅" },
        "unexpected": true
    }))
    .expect_err("顶层未知字段应被拒绝");

    assert!(
        error.to_string().contains("unknown field"),
        "顶层未知字段应报 unknown field，实际为：{error}"
    );
}

#[test]
fn generation_result_is_tagged_per_endpoint() {
    let result: Model3dGenerationResult = serde_json::from_value(json!({
        "kind": "textToModel",
        "target": { "kind": "projectResource", "resourceId": "res-1" },
        "model": {
            "objectKey": "models/res-1.glb",
            "contentType": "model/gltf-binary",
            "contentLength": 41_636_076_u64,
            "sha256": "0f1e"
        },
        "preview": {
            "objectKey": "models/res-1.webp",
            "contentType": "image/webp",
            "contentLength": 20_480_u64,
            "sha256": "2a3b"
        }
    }))
    .expect("按端点的结果应可反序列化");

    let Model3dGenerationResult::TextToModel(text) = result else {
        panic!("kind=textToModel 不应解成 imageToModel 分支");
    };
    assert_eq!(
        text.target,
        Model3dGenerationTargetRef::ProjectResource {
            resource_id: "res-1".into()
        }
    );
    assert_eq!(
        text.model,
        Model3dGeneratedArtifact {
            object_key: "models/res-1.glb".into(),
            content_type: "model/gltf-binary".into(),
            content_length: 41_636_076,
            sha256: "0f1e".into(),
        }
    );
    assert_eq!(
        text.preview,
        Model3dGeneratedArtifact {
            object_key: "models/res-1.webp".into(),
            content_type: "image/webp".into(),
            content_length: 20_480,
            sha256: "2a3b".into(),
        }
    );

    // 对称覆盖 imageToModel 分支：tag 路由与分支字段都要单独守住。
    let image_result: Model3dGenerationResult = serde_json::from_value(json!({
        "kind": "imageToModel",
        "target": { "kind": "projectResource", "resourceId": "res-2" },
        "model": {
            "objectKey": "models/res-2.glb",
            "contentType": "model/gltf-binary",
            "contentLength": 41_636_077_u64,
            "sha256": "3c4d"
        },
        "preview": {
            "objectKey": "models/res-2.webp",
            "contentType": "image/webp",
            "contentLength": 20_481_u64,
            "sha256": "4e5f"
        }
    }))
    .expect("按端点的结果应可反序列化");

    let Model3dGenerationResult::ImageToModel(image) = image_result else {
        panic!("kind=imageToModel 不应解成 textToModel 分支");
    };
    assert_eq!(
        image.target,
        Model3dGenerationTargetRef::ProjectResource {
            resource_id: "res-2".into()
        }
    );
    assert_eq!(
        image.model,
        Model3dGeneratedArtifact {
            object_key: "models/res-2.glb".into(),
            content_type: "model/gltf-binary".into(),
            content_length: 41_636_077,
            sha256: "3c4d".into(),
        }
    );
    assert_eq!(
        image.preview,
        Model3dGeneratedArtifact {
            object_key: "models/res-2.webp".into(),
            content_type: "image/webp".into(),
            content_length: 20_481,
            sha256: "4e5f".into(),
        }
    );
}