import XCTest
import Foundation
@testable import ForgeLibrary

final class LibraryStoreTests: XCTestCase {

    var dbPath: String!
    var store: LibraryStore!

    override func setUp() async throws {
        dbPath = NSTemporaryDirectory() + "forge-test-\(UUID().uuidString).db"
        store = try LibraryStore(path: dbPath)
    }

    override func tearDown() async throws {
        store = nil
        try? FileManager.default.removeItem(atPath: dbPath)
    }

    // Schema migration table exists with v1.
    func testMigrationVersion() throws {
        XCTAssertEqual(try store.schemaVersion(), 1)
    }

    // Project CRUD.
    func testProjectCRUD() throws {
        let p = try store.createProject(name: "Feature X")
        XCTAssertFalse(p.id.uuidString.isEmpty)
        XCTAssertEqual(p.name, "Feature X")

        let all = try store.listProjects()
        XCTAssertEqual(all.count, 1)
        XCTAssertEqual(all[0].name, "Feature X")

        try store.deleteProject(id: p.id)
        XCTAssertTrue(try store.listProjects().isEmpty)
    }

    // Day belongs to project.
    func testDayCRUD() throws {
        let p = try store.createProject(name: "P")
        let d = try store.createDay(projectID: p.id, label: "Day 01", date: "2026-07-10")
        let days = try store.listDays(projectID: p.id)
        XCTAssertEqual(days.count, 1)
        XCTAssertEqual(days[0].label, "Day 01")
        XCTAssertEqual(days[0].date, "2026-07-10")
        XCTAssertEqual(days[0].id, d.id)
    }

    // Shot CRUD with metadata + grade snapshot blob round-trip.
    func testShotRoundTrip() throws {
        let p = try store.createProject(name: "P")
        let d = try store.createDay(projectID: p.id, label: "D1", date: "2026-07-10")
        let snapshot = Data(#"{"nodes":[],"version":1}"#.utf8)

        var shot = Shot(
            dayID: d.id,
            clipName: "A001C001_260710_R1CD",
            cameraSlot: "A-Cam",
            timecodeIn: "10:00:00:00",
            timecodeOut: nil,
            exposureIndex: 800,
            whiteBalance: 5600,
            tint: 0,
            fps: 24,
            gradeSnapshot: snapshot)
        shot = try store.createShot(shot)

        var fetched = try XCTUnwrap(store.shot(id: shot.id))
        XCTAssertEqual(fetched.clipName, "A001C001_260710_R1CD")
        XCTAssertEqual(fetched.cameraSlot, "A-Cam")
        XCTAssertEqual(fetched.exposureIndex, 800)
        XCTAssertEqual(fetched.gradeSnapshot, snapshot)
        XCTAssertNil(fetched.timecodeOut)

        // Update TC out on rec stop.
        fetched.timecodeOut = "10:02:30:12"
        try store.updateShot(fetched)
        let updated = try XCTUnwrap(store.shot(id: shot.id))
        XCTAssertEqual(updated.timecodeOut, "10:02:30:12")
    }

    // Shots listed per day in insert order.
    func testListShotsByDay() throws {
        let p = try store.createProject(name: "P")
        let d = try store.createDay(projectID: p.id, label: "D1", date: "2026-07-10")
        for i in 1...3 {
            _ = try store.createShot(Shot(dayID: d.id, clipName: "A001C00\(i)", cameraSlot: "A-Cam"))
        }
        let shots = try store.listShots(dayID: d.id)
        XCTAssertEqual(shots.map(\.clipName), ["A001C001", "A001C002", "A001C003"])
    }

    // Concurrent writers serialized safely.
    func testConcurrentWrites() async throws {
        let p = try store.createProject(name: "P")
        let d = try store.createDay(projectID: p.id, label: "D1", date: "2026-07-10")
        let s = store!
        let dayID = d.id
        await withTaskGroup(of: Void.self) { group in
            for i in 0..<50 {
                group.addTask {
                    _ = try? s.createShot(Shot(dayID: dayID, clipName: "C\(i)", cameraSlot: "A"))
                }
            }
        }
        XCTAssertEqual(try store.listShots(dayID: d.id).count, 50)
    }

    // Reopen db: data persists.
    func testPersistence() throws {
        let p = try store.createProject(name: "Persist")
        store = nil
        store = try LibraryStore(path: dbPath)
        let all = try store.listProjects()
        XCTAssertEqual(all.count, 1)
        XCTAssertEqual(all[0].id, p.id)
    }

    // Cascade: deleting project removes days + shots.
    func testCascadeDelete() throws {
        let p = try store.createProject(name: "P")
        let d = try store.createDay(projectID: p.id, label: "D1", date: "2026-07-10")
        _ = try store.createShot(Shot(dayID: d.id, clipName: "C1", cameraSlot: "A"))
        try store.deleteProject(id: p.id)
        XCTAssertTrue(try store.listDays(projectID: p.id).isEmpty)
        XCTAssertTrue(try store.listShots(dayID: d.id).isEmpty)
    }
}