//! Shared modal content and binding presentation.
use hexwork_term::remap::{Action, Keymap};
use hexwork_ui::inventory::{BrowserBindings, render_browser};
use hexwork_ui::transfer::{TransferPromptBindings, TransferPromptKind, render_transfer_prompt};
use crate::app::{InventoryBrowserSnapshot, TransferPromptSnapshot};
pub fn binding_label(keymap: &Keymap, action: Action, fallback: &str) -> String {
    keymap.primary_binding_label(action).unwrap_or_else(|| fallback.to_owned())
}
pub fn inventory_browser_bindings(keymap: &Keymap) -> BrowserBindings {
    BrowserBindings {
        up: binding_label(keymap, Action::Up, "up action"), down: binding_label(keymap, Action::Down, "down action"),
        left: binding_label(keymap, Action::Left, "left action"), right: binding_label(keymap, Action::Right, "right action"),
        inspect: binding_label(keymap, Action::Confirm, "confirm action"), wield: None, identify: None,
        back: binding_label(keymap, Action::Look, "look action"), close: binding_label(keymap, Action::Inventory, "inventory action"),
        quit: binding_label(keymap, Action::Quit, "quit action"), picks: std::array::from_fn(|slot| binding_label(keymap, Action::ChargenPick(slot), "unavailable")),
    }
}
pub fn transfer_prompt_bindings(keymap: &Keymap, kind: TransferPromptKind) -> TransferPromptBindings {
    TransferPromptBindings {
        previous: binding_label(keymap, Action::Up, "up action"), next: binding_label(keymap, Action::Down, "down action"),
        confirm: binding_label(keymap, Action::Confirm, "confirm action"), quit: binding_label(keymap, Action::Quit, "quit action"),
        originating_action: match kind {
            TransferPromptKind::Pickup => keymap.primary_binding_label(Action::Pickup),
            TransferPromptKind::Drop => keymap.primary_binding_label(Action::Drop),
            TransferPromptKind::Wield | TransferPromptKind::TinkerIdentify { .. } => None,
        },
    }
}
pub fn modal_rows(prompt: Option<&TransferPromptSnapshot>, browser: Option<&InventoryBrowserSnapshot>, keymap: &Keymap) -> Option<Vec<String>> {
    if let Some(prompt) = prompt {
        return Some(render_transfer_prompt(&prompt.content, &transfer_prompt_bindings(keymap, prompt.content.kind), &prompt.layout));
    }
    browser.map(|browser| {
        let mut bindings = inventory_browser_bindings(keymap);
        if browser.content.can_wield_selected { bindings.wield = keymap.primary_binding_label(Action::Confirm); }
        if browser.content.tinker.as_ref().is_some_and(|t| t.selected_eligible) { bindings.identify = keymap.primary_binding_label(Action::Confirm); }
        render_browser(&browser.content, &bindings, &browser.layout)
    })
}