use crate::models::KnowledgeFile;
use dioxus::prelude::*;

/// Renders a table row for a knowledge base file.
///
/// # Arguments
///
/// * `file` - The knowledge file data to render
/// * `on_delete` - Callback fired when the delete button is clicked
#[component]
pub fn FileRow(file: KnowledgeFile, on_delete: EventHandler<String>) -> Element {
    // Format file size for human readability (Python devs: similar to humanize.naturalsize)
    let size_display = format_size(file.size_bytes);

    rsx! {
        tr { class: "file-row",
            td { class: "file-row-name",
                span { class: "file-row-icon", "{file.kind.icon()}" }
                "{file.name}"
            }
            td { "{file.kind.label()}" }
            td { "{size_display}" }
            td { "{file.chunk_count} chunks" }
            td { "{file.uploaded_at}" }
            td {
                button {
                    class: "btn-icon btn-danger",
                    onclick: {
                        let id = file.id.clone();
                        move |_| on_delete.call(id.clone())
                    },
                    "Delete"
                }
            }
        }
    }
}

/// Formats a byte count into a human-readable string (e.g. "1.2 MB").
fn format_size(bytes: u64) -> String {
    const KB: u64 = 1024;
    const MB: u64 = KB * 1024;
    const GB: u64 = MB * 1024;

    if bytes >= GB {
        format!("{:.1} GB", bytes as f64 / GB as f64)
    } else if bytes >= MB {
        format!("{:.1} MB", bytes as f64 / MB as f64)
    } else if bytes >= KB {
        format!("{:.1} KB", bytes as f64 / KB as f64)
    } else {
        format!("{bytes} B")
    }
}