screen_colonies_ui <- function(id) {
  ns <- NS(id)
  shiny::tagList(
    shiny::uiOutput(ns("status_filters")),
    shiny::uiOutput(ns("cards")),
    shiny::br(),
    shiny::div(class = "d-flex gap-2 mb-2",
      shiny::actionButton(ns("quick_insp_btn"),
        shiny::tagList(shiny::icon("bolt"), " Schnelldurchsicht"),
        class = "btn btn-outline-primary w-100"
      ),
      shiny::actionButton(ns("bulk_action_btn"),
        shiny::tagList(shiny::icon("layer-group"), " Sammelmaßnahme"),
        class = "btn btn-outline-secondary w-100"
      )
    ),
    shiny::div(class = "d-flex gap-2 mb-2",
      shiny::actionButton(ns("lineage_btn"),
        shiny::tagList(shiny::icon("sitemap"), " Stammbaum"),
        class = "btn btn-outline-secondary w-100"
      )
    ),
    shiny::actionButton(ns("add_btn"), shiny::tagList(shiny::icon("plus"), " Neues Volk"),
      class = "add-dashed btn", style = "width:100%;min-height:80px"
    )
  )
}

screen_colonies_server <- function(id, db, nav) {
  moduleServer(id, function(input, output, session) {
    ns           <- session$ns
    reload       <- reactiveVal(0)
    status_filter <- reactiveVal("")

    colonies <- reactive({
      req(nav$apiary_id)
      reload()
      db_colonies_list(db, apiary_id = nav$apiary_id, include_closed = FALSE)
    })

    output$status_filters <- renderUI({
      statuses <- c("Alle" = "", COLONY_STATUSES[names(COLONY_STATUSES) != "Eingegangen"])
      shiny::div(class = "d-flex gap-2 mb-3 flex-wrap",
        lapply(seq_along(statuses), function(i) {
          val <- statuses[[i]]
          active <- identical(status_filter(), val)
          shiny::actionButton(
            ns(paste0("sf_", i)), names(statuses)[i],
            class = if (active) "btn btn-primary btn-sm" else "btn btn-outline-secondary btn-sm"
          )
        })
      )
    })

    observe({
      statuses <- c("Alle" = "", COLONY_STATUSES[names(COLONY_STATUSES) != "Eingegangen"])
      lapply(seq_along(statuses), function(i) {
        local({
          li <- i; val <- statuses[[i]]
          observeEvent(input[[paste0("sf_", li)]], status_filter(val), ignoreInit = TRUE)
        })
      })
    })

    filtered <- reactive({
      cols <- colonies()
      sf   <- status_filter()
      if (!is.null(sf) && sf != "") cols[cols$status == sf, ] else cols
    })

    output$cards <- renderUI({
      cols <- filtered()
      if (nrow(cols) == 0) return(shiny::p(class = "text-muted", "Keine Völker gefunden."))
      lapply(seq_len(nrow(cols)), function(i) {
        row <- cols[i, ]
        days_ago <- if (!is.na(row$last_inspection_date)) {
          d <- as.integer(Sys.Date() - as.Date(row$last_inspection_date))
          if (d == 0) "heute" else if (d == 1) "gestern" else paste0("vor ", d, " Tagen")
        } else "keine Durchsicht"

        shiny::div(
          class = "card tap-card mb-2",
          onclick = sprintf("Shiny.setInputValue('%s', %d, {priority:'event'})",
            ns("select"), row$id),
          bslib::card_body(
            class = "d-flex justify-content-between align-items-center py-2",
            shiny::div(
              shiny::tags$strong(row$name),
              shiny::tags$p(class = "text-muted small mb-0", days_ago)
            ),
            shiny::HTML(colony_status_badge(row$status))
          )
        )
      })
    })

    observeEvent(input$select, {
      nav$colony_id <- input$select
      nav$screen    <- "colony"
    })

    observeEvent(input$quick_insp_btn, { nav$screen <- "quick_inspection" })
    observeEvent(input$bulk_action_btn, { nav$screen <- "bulk_action" })
    observeEvent(input$lineage_btn, { nav$screen <- "lineage" })

    # ---- Add colony modal ---------------------------------------------------
    observeEvent(input$add_btn, {
      cols <- db_colonies_list(db, include_closed = FALSE)
      shiny::showModal(shiny::modalDialog(
        title  = "Neues Volk",
        footer = shiny::tagList(
          shiny::modalButton("Abbrechen"),
          shiny::actionButton(ns("confirm_add"), "Anlegen", class = "btn-primary")
        ),
        shiny::textInput(ns("new_name"), "Name *"),
        shiny::selectInput(ns("new_status"), "Status",
          choices  = COLONY_STATUSES[names(COLONY_STATUSES) != "Eingegangen"],
          selected = "wirtschaftsvolk"
        ),
        shiny::selectInput(ns("new_parent"), "Muttervolk (optional)",
          choices = c("–" = "", setNames(cols$id, cols$name))
        ),
        shiny::textAreaInput(ns("new_notes"), "Notizen", rows = 2)
      ))
    })

    observeEvent(input$confirm_add, {
      if (nchar(trimws(input$new_name)) == 0) {
        shiny::showNotification("Bitte einen Namen eingeben.", type = "warning", duration = 3)
        return()
      }
      req(nav$apiary_id)
      parent <- if (!is.null(input$new_parent) && input$new_parent != "")
        as.integer(input$new_parent) else NA
      db_colonies_insert(db,
        name             = trimws(input$new_name),
        apiary_id        = as.integer(nav$apiary_id),
        status           = input$new_status,
        parent_colony_id = parent,
        notes            = input$new_notes
      )
      shiny::removeModal(); reload(reload() + 1L)
    })
  })
}