// Copyright © 2022 Rangeproof Pty Ltd. All rights reserved.

import Foundation
import GRDB
import SessionUtilitiesKit

public struct Quote: Codable, Equatable, Hashable, FetchableRecord, PersistableRecord, TableRecord, ColumnExpressible {
    public static var databaseTableName: String { "quote" }
    public static let interactionForeignKey = ForeignKey([Columns.interactionId], to: [Interaction.Columns.id])
    internal static let originalInteractionForeignKey = ForeignKey(
        [Columns.timestampMs, Columns.authorId],
        to: [Interaction.Columns.timestampMs, Interaction.Columns.authorId]
    )
    internal static let profileForeignKey = ForeignKey([Columns.authorId], to: [Profile.Columns.id])
    internal static let interaction = belongsTo(Interaction.self, using: interactionForeignKey)
    private static let profile = hasOne(Profile.self, using: profileForeignKey)
    private static let quotedInteraction = hasOne(Interaction.self, using: originalInteractionForeignKey)
    public static let attachment = hasOne(Attachment.self, using: Attachment.quoteForeignKey)
    
    public typealias Columns = CodingKeys
    public enum CodingKeys: String, CodingKey, ColumnExpression {
        case interactionId
        case authorId
        case timestampMs
        case body
        case attachmentId
    }
    
    /// The id for the interaction this Quote belongs to
    public let interactionId: Int64
    
    /// The id for the author this Quote belongs to
    public let authorId: String
    
    /// The timestamp in milliseconds since epoch when the quoted interaction was sent
    public let timestampMs: Int64
    
    /// The body of the quoted message if the user is quoting a text message or an attachment with a caption
    public let body: String?
    
    /// The id for the attachment this Quote is associated with
    public let attachmentId: String?
    
    // MARK: - Relationships
    
    public var interaction: QueryInterfaceRequest<Interaction> {
        request(for: Quote.interaction)
    }
    
    public var profile: QueryInterfaceRequest<Profile> {
        request(for: Quote.profile)
    }
    
    public var attachment: QueryInterfaceRequest<Attachment> {
        request(for: Quote.attachment)
    }
    
    public var originalInteraction: QueryInterfaceRequest<Interaction> {
        request(for: Quote.quotedInteraction)
    }
    
    // MARK: - Interaction
    
    public init(
        interactionId: Int64,
        authorId: String,
        timestampMs: Int64,
        body: String?,
        attachmentId: String?
    ) {
        self.interactionId = interactionId
        self.authorId = authorId
        self.timestampMs = timestampMs
        self.body = body
        self.attachmentId = attachmentId
    }
}

// MARK: - Mutation

public extension Quote {
    func with(
        interactionId: Int64? = nil,
        authorId: String? = nil,
        timestampMs: Int64? = nil,
        body: String? = nil,
        attachmentId: String? = nil
    ) -> Quote {
        return Quote(
            interactionId: interactionId ?? self.interactionId,
            authorId: authorId ?? self.authorId,
            timestampMs: timestampMs ?? self.timestampMs,
            body: body ?? self.body,
            attachmentId: attachmentId ?? self.attachmentId
        )
    }
}

// MARK: - Protobuf

public extension Quote {
    init?(_ db: Database, proto: SNProtoDataMessage, interactionId: Int64, thread: SessionThread) throws {
        guard
            let quoteProto = proto.quote,
            quoteProto.id != 0,
            !quoteProto.author.isEmpty
        else { return nil }
        
        self.interactionId = interactionId
        self.timestampMs = Int64(quoteProto.id)
        self.authorId = quoteProto.author
        self.body = nil
        self.attachmentId = nil
    }
}