import Foundation
import Testing

@testable import Persistence

@Suite(
    "CollectingRepository repository, collection and events",
    .tags(.repository)
)
struct CommunityRepositoryTests {

    // MARK: Collection tests

    @Test
    func `keeps a collection per account, within a series' run`() async throws {
        try await withDatabase { fluent in
            let collecting = CollectingRepository(fluent: fluent)
            let accounts = AccountRepository(fluent: fluent)
            let mara = try await accounts.account(email: "mara.v@example.com")
            let sam = try await accounts.account(email: "sam@example.com")

            // Echo Country runs six issues: #9 is outside it, and #2 is given twice.
            try await collecting.own(issues: [1, 2, 2, 9, 0], ofSeries: "echo-country", by: mara)
            try await collecting.own(issues: [2, 3], ofSeries: "echo-country", by: mara)
            try await collecting.own(issues: [1], ofSeries: "no-such-series", by: mara)
            try await collecting.disown(issue: 1, ofSeries: "echo-country", by: sam)

            let owned = try await collecting.ownedIssues(of: mara)
            let others = try await collecting.ownedIssues(of: sam)

            try await collecting.disown(issue: 1, ofSeries: "echo-country", by: mara)

            let after = try await collecting.ownedIssues(of: mara)

            #expect(owned == ["echo-country": [1, 2, 3]])
            #expect(others.isEmpty)
            #expect(after == ["echo-country": [2, 3]])
        }
    }

    // MARK: Events tests

    @Test
    func `lists the events still to come, soonest first, with the shops trading there`() async throws {
        try await withDatabase { fluent in
            let clock = Clock()
            let collecting = CollectingRepository(fluent: fluent, now: clock.now)

            // The present, which every demo con is seeded after.
            clock.advance(by: Date().timeIntervalSince(clock.now()))

            let all = try await collecting.upcomingEvents()

            // The first con's last day: still on. Two weeks later it is over, and so is Stripdagen.
            clock.advance(by: try #require(all.first).endsOn.timeIntervalSince(clock.now()))

            let lastDay = try await collecting.upcomingEvents()

            clock.advance(by: 14 * 86_400)

            let later = try await collecting.upcomingEvents()

            #expect(all.map(\.slug) == ["dutch-comic-con", "stripdagen-haarlem", "comic-con-amsterdam", "comic-con-brussels"])
            #expect(Set(all[0].shops.map(\.slug)) == ["kestrel-row-comics", "silverfish-comics", "third-panel-supply"])
            #expect(lastDay.first?.slug == "dutch-comic-con")
            #expect(later.first?.slug == "comic-con-amsterdam")
        }
    }

    @Test
    func `dates the demo cons on weekends, from the first one after seeding`() {
        var calendar = Calendar(identifier: .gregorian)

        calendar.timeZone = TimeZone(identifier: "Europe/Amsterdam") ?? .gmt

        // Monday 21 September 2026: the dates the prototype first shipped with.
        let days = Seed.events(after: Date(timeIntervalSince1970: 1_790_000_000)).map { entry in
            [entry.event.startsOn, entry.event.endsOn]
                .map { calendar.dateComponents([.month, .day, .hour], from: $0) }
                .map { "\($0.month ?? 0)/\($0.day ?? 0) \($0.hour ?? 0):00" }
        }

        #expect(days == [
            ["9/26 12:00", "9/27 12:00"],
            ["10/3 12:00", "10/4 12:00"],
            ["11/21 12:00", "11/22 12:00"],
            ["12/5 12:00", "12/6 12:00"],
        ])
    }

    @Test
    func `lets a seller pick the events their shop trades at`() async throws {
        try await withDatabase { fluent in
            let collecting = CollectingRepository(fluent: fluent)
            let accounts = AccountRepository(fluent: fluent)
            let joost = try await accounts.account(email: "joost@kestrelrow.example")
            let mara = try await accounts.account(email: "mara.v@example.com")

            try await collecting.setEvents(["stripdagen-haarlem", "comic-con-amsterdam", "no-such-event"], forShopOwnedBy: joost)
            // An account without a shop changes nothing.
            try await collecting.setEvents(["dutch-comic-con"], forShopOwnedBy: mara)

            let trading = try await collecting.upcomingEvents()
                .filter { $0.shops.contains { $0.slug == "kestrel-row-comics" } }
                .map(\.slug)

            #expect(trading == ["stripdagen-haarlem", "comic-con-amsterdam"])
        }
    }

    @Test
    func `narrows a search to the shops trading at an event`() {
        let filter = ListingFilter(shops: ["silverfish-comics"])

        #expect(Seed.listings.filter(filter.matches).map(\.shop.slug).allSatisfy { $0 == "silverfish-comics" })
        #expect(Seed.listings.filter(filter.matches).count == 4)
        #expect(Seed.listings.filter(ListingFilter(shops: []).matches).isEmpty)
    }

    // MARK: Recovery tests

    @Test
    func `replaces every passkey of an account with the one it recovers with`() async throws {
        try await withDatabase { fluent in
            let accounts = AccountRepository(fluent: fluent)
            let sam = try #require(try await accounts.join(email: "sam@example.com", credentialID: "old-1", publicKey: [1], signCount: 3))

            try await accounts.addPasskey(to: sam, credentialID: "old-2", publicKey: [2], signCount: 0)
            try await accounts.replacePasskeys(of: sam, credentialID: "new", publicKey: [9], signCount: 0)

            let passkeys = try await accounts.passkeys(of: sam)
            let lost = try await accounts.passkey(credentialID: "old-1")

            #expect(passkeys.map(\.passkey.credentialID) == ["new"])
            #expect(lost == nil)
        }
    }

}