import XCTest
import Foundation
#if canImport(FoundationNetworking)
import FoundationNetworking
#endif
@testable import ForgeSim

final class ArriSimTests: XCTestCase {

    var sim: ArriSimulator!

    override func setUp() async throws {
        sim = ArriSimulator()
        try await sim.start(port: 0) // ephemeral
    }

    override func tearDown() async throws {
        try await sim.stop()
        sim = nil
    }

    func get(_ path: String) async throws -> (Int, Data) {
        let port = await sim.boundPort!
        let url = URL(string: "http://127.0.0.1:\(port)\(path)")!
        let (data, resp) = try await URLSession.shared.data(from: url)
        return ((resp as! HTTPURLResponse).statusCode, data)
    }

    func put(_ path: String, body: Data) async throws -> (Int, Data) {
        let port = await sim.boundPort!
        var req = URLRequest(url: URL(string: "http://127.0.0.1:\(port)\(path)")!)
        req.httpMethod = "PUT"
        req.httpBody = body
        let (data, resp) = try await URLSession.shared.data(for: req)
        return ((resp as! HTTPURLResponse).statusCode, data)
    }

    // System info endpoint serves model + serial JSON.
    func testSystemInfo() async throws {
        let (status, data) = try await get("/api/v1/system/info")
        XCTAssertEqual(status, 200)
        let obj = try JSONSerialization.jsonObject(with: data) as? [String: Any]
        XCTAssertEqual(obj?["model"] as? String, "ALEXA 35")
        XCTAssertNotNil(obj?["serialNumber"])
    }

    // Rec state reflects scripted changes.
    func testRecStateScriptable() async throws {
        var (_, data) = try await get("/api/v1/recording/status")
        var obj = try JSONSerialization.jsonObject(with: data) as? [String: Any]
        XCTAssertEqual(obj?["recording"] as? Bool, false)

        await sim.setRecording(true, clipName: "A001C003_250710_R1CD")
        (_, data) = try await get("/api/v1/recording/status")
        obj = try JSONSerialization.jsonObject(with: data) as? [String: Any]
        XCTAssertEqual(obj?["recording"] as? Bool, true)
        XCTAssertEqual(obj?["clipName"] as? String, "A001C003_250710_R1CD")
    }

    // Metadata endpoint.
    func testMetadata() async throws {
        await sim.setMetadata(ei: 1280, wb: 3200, tint: -2, fps: 25, timecode: "10:20:30:12")
        let (status, data) = try await get("/api/v1/camera/metadata")
        XCTAssertEqual(status, 200)
        let obj = try JSONSerialization.jsonObject(with: data) as? [String: Any]
        XCTAssertEqual(obj?["exposureIndex"] as? Int, 1280)
        XCTAssertEqual(obj?["whiteBalance"] as? Int, 3200)
        XCTAssertEqual(obj?["tint"] as? Int, -2)
        XCTAssertEqual(obj?["timecode"] as? String, "10:20:30:12")
    }

    // Look upload stored and retrievable.
    func testLookUploadStored() async throws {
        let payload = try JSONSerialization.data(withJSONObject: [
            "name": "shot42",
            "cdl": ["slope": [1.1, 1.0, 0.9], "offset": [0, 0, 0], "power": [1, 1, 1], "saturation": 1.2],
            "lut3dSize": 2,
            "lut3dTable": Array(repeating: 0.5, count: 24),
        ])
        let (status, _) = try await put("/api/v1/look/current", body: payload)
        XCTAssertEqual(status, 200)

        let stored = await sim.uploadedLooks
        XCTAssertEqual(stored.count, 1)
        let storedObj = try JSONSerialization.jsonObject(with: stored[0]) as? [String: Any]
        XCTAssertEqual(storedObj?["name"] as? String, "shot42")

        // Retrievable over HTTP too.
        let (gs, gd) = try await get("/api/v1/look/current")
        XCTAssertEqual(gs, 200)
        let obj = try JSONSerialization.jsonObject(with: gd) as? [String: Any]
        XCTAssertEqual(obj?["name"] as? String, "shot42")
    }

    // Malformed look rejected 400.
    func testMalformedLookRejected() async throws {
        let (status, _) = try await put("/api/v1/look/current", body: Data("not json".utf8))
        XCTAssertEqual(status, 400)
    }

    // Unknown path 404.
    func testUnknownPath404() async throws {
        let (status, _) = try await get("/api/v1/warp/drive")
        XCTAssertEqual(status, 404)
    }
}