import DatabaseClient
import Dependencies
import Logging
import ManualDClient
import ManualDCore
import PdfClient

extension ProjectClient: DependencyKey {

  public static var liveValue: Self {
    @Dependency(\.database) var database
    @Dependency(\.manualD) var manualD
    @Dependency(\.pdfClient) var pdfClient

    return .init(
      calculateDuctSizes: { projectID in
        try await database.calculateDuctSizes(projectID: projectID).0
      },
      calculateRoomDuctSizes: { projectID in
        try await database.calculateRoomDuctSizes(projectID: projectID).0
      },
      calculateTrunkDuctSizes: { projectID in
        try await database.calculateTrunkDuctSizes(projectID: projectID).0
      },
      createProject: { userID, request in
        let project = try await database.projects.create(userID, request)
        try await database.componentLoss.createDefaults(projectID: project.id)
        return try await .init(
          projectID: project.id,
          rooms: database.rooms.fetch(project.id),
          sensibleHeatRatio: database.projects.getSensibleHeatRatio(project.id),
          completedSteps: database.projects.getCompletedSteps(project.id)
        )
      },
      frictionRate: { projectID in
        try await manualD.frictionRate(projectID: projectID)
      },
      toMarkdown: { projectID in
        try await pdfClient.markdown(database.makePdfRequest(projectID))
      },
      toHTML: { projectID in
        try await pdfClient.html(database.makePdfRequest(projectID))
      }
    )
  }

}

extension DatabaseClient {

  fileprivate func makePdfRequest(_ projectID: Project.ID) async throws -> PdfClient.Request {
    @Dependency(\.manualD) var manualD

    guard let project = try await projects.get(projectID) else {
      throw ProjectClientError("Project not found. id: \(projectID)")
    }
    let frictionRateResponse = try await manualD.frictionRate(projectID: projectID)
    guard let frictionRate = frictionRateResponse.frictionRate else {
      throw ProjectClientError("Friction rate not found. id: \(projectID)")
    }
    let (ductSizes, sharedInfo, rooms) = try await calculateDuctSizes(projectID: projectID)

    return .init(
      project: project,
      rooms: rooms,
      componentLosses: frictionRateResponse.componentLosses,
      ductSizes: ductSizes,
      equipmentInfo: sharedInfo.equipmentInfo,
      maxSupplyTEL: sharedInfo.maxSupplyLength,
      maxReturnTEL: sharedInfo.maxReturnLenght,
      frictionRate: frictionRate,
      projectSHR: sharedInfo.projectSHR
    )
  }

}