# Source code for crystal_toolkit.components.search

    import os
    from random import choice

    import numpy as np
    from dash import dcc, html
    from dash.dependencies import Input, Output, State
    from dash.exceptions import PreventUpdate
    from monty.serialization import loadfn
    from mp_api.client import MPRester, MPRestError
    from pymatgen.util.string import unicodeify, unicodeify_spacegroup

    from crystal_toolkit import __file__ as module_path
    from crystal_toolkit.core.mpcomponent import MPComponent
    from crystal_toolkit.helpers.layouts import (
        Button,
        Control,
        Field,
        Icon,
        MessageBody,
        MessageContainer,
    )

    class SearchComponent(MPComponent):
        def __init__(self, *args, **kwargs):
            super().__init__(*args, **kwargs)
            self.create_store("results")

        def _get_mpid_cache(self):

            path = os.path.join(os.path.dirname(module_path), "mpid_cache.json")

            if os.path.isfile(path):
                mpid_cache = loadfn(path)
            else:
                mpid_cache = []
            # else:
            #     try:
            #         with MPRester() as mpr:
            #             # restrict random mpids to those likely experimentally known
            #             # and not too large
            #             entries = mpr.query(
            #                 {"nsites": {"$lte": 16}},
            #                 ["task_id", "icsd_ids"],
            #                 chunk_size=0,
            #                 mp_decode=False,
            #             )
            #         mpid_cache = [
            #             entry["task_id"] for entry in entries if len(entry["icsd_ids"]) > 2
            #         ]
            #         dumpfn(mpid_cache, path)
            #     except Exception:
            #         mpid_cache = []

            self.mpid_cache = mpid_cache

        def _make_search_box(self, search_term=None):

            search_field = dcc.Input(
                id=self.id("input"),
                className="input",
                type="text",
                value=search_term,
                placeholder="Enter a formula or mp-id…",
            )
            search_button = Button(
                [Icon(kind="search"), html.Span(), "Search"],
                kind="primary",
                id=self.id("button"),
            )
            search = Field(
                [Control(search_field), Control(search_button)],
                addons=True,
                style={"marginBottom": "0"},
            )

            return html.Div(
                [html.Label("Search Materials Project:", className="mpc-label"), search]
            )

        @property
        def _sub_layouts(self):

            search = html.Div(self._make_search_box(), id=self.id("search_container"))

            random_link = html.A(
                "get random mp-id", className="is-text is-size-7", id=self.id("random")
            )

            dropdown = dcc.Dropdown(id=self.id("dropdown"), clearable=False)
            dropdown_container = html.Div(
                [html.Label("Multiple results found, please select one:"), dropdown],
                id=self.id("dropdown-container"),
                style={"display": "none"},
            )

            warning = html.Div(style={"display": "none"}, id=self.id("warning"))

            search = html.Div([search, random_link], style={"marginBottom": "0.75rem"})

            search = html.Div([search, warning, dropdown_container])

            return {"search": search}

        def layout(self):
            return html.Div([self._sub_layouts["search"]])

        def generate_callbacks(self, app, cache):

            self._get_mpid_cache()

            @cache.memoize(timeout=0)
            def get_human_readable_results_from_search_term(search_term):

                # common confusables
                if search_term.isnumeric() and str(int(search_term)) == search_term:
                    search_term = f"mp-{search_term}"
                if search_term.startswith("mp") and "-" not in search_term:
                    search_term = f"mp-{search_term.split('mp')[1]}"

                if search_term.startswith("mp-") or search_term.startswith("mvc-"):
                    # no need to actually search, support multiple mp-ids (space separated)
                    return {mpid: mpid for mpid in search_term.split(" ")}

                with MPRester() as mpr:
                    try:
                        entries = mpr.summary.search_summary_docs(
                            formula=search_term,
                            fields=[
                                "material_id",
                                "formula_pretty",
                                "energy_above_hull",
                                "symmetry",
                            ],
                        )
                    except MPRestError:
                        entries = []

                if len(entries) == 0:
                    self.logger.info(f"Search: no results for {search_term}")
                    return {"error": f"No results found for {search_term}."}

                entries = sorted(entries, key=lambda x: x.energy_above_hull)

                human_readable_hull_labels = []
                for entry in entries:
                    e_hull = entry.energy_above_hull
                    if e_hull == 0:
                        human_readable_hull_labels.append("predicted stable phase")
                    elif e_hull >= 0.01:
                        human_readable_hull_labels.append(f"+{e_hull:.2f} eV/atom")
                    else:
                        e_hull_str = np.format_float_scientific(e_hull, precision=2)
                        human_readable_hull_labels.append(f"+{e_hull_str} eV/atom")

                human_readable_results = {
                    entry.material_id: f"{unicodeify(entry.formula_pretty)} "
                    f"({unicodeify_spacegroup(entry.symmetry.symbol)}) "
                    f"{human_readable_hull_label}"
                    for entry, human_readable_hull_label in zip(
                        entries, human_readable_hull_labels
                    )
                }

                return human_readable_results

            @app.callback(
                Output(self.id("results"), "data"),
                [Input(self.id("input"), "n_submit"), Input(self.id("button"), "n_clicks")],
                [State(self.id("input"), "value")],
            )
            def update_results(n_submit, n_clicks, search_term):

                if not search_term:
                    raise PreventUpdate

                self.logger.info(f"Search: {search_term}")

                results = get_human_readable_results_from_search_term(search_term)

                self.logger.debug(f"Search results: {results}")

                return results

            @app.callback(
                Output(self.id("dropdown"), "options"), [Input(self.id("results"), "data")]
            )
            def update_dropdown_options(results):
                if not results or "error" in results:
                    raise PreventUpdate
                return [{"value": mpid, "label": label} for mpid, label in results.items()]

            @app.callback(
                Output(self.id("dropdown"), "value"), [Input(self.id("results"), "data")]
            )
            def update_dropdown_value(results):
                if not results or "error" in results:
                    raise PreventUpdate
                return list(results)[0]

            @app.callback(
                Output(self.id("dropdown-container"), "style"),
                [Input(self.id("results"), "data")],
            )
            def hide_show_dropdown(results):
                if not results or len(results) <= 1:
                    return {"display": "none"}
                else:
                    return {}

            @app.callback(
                Output(self.id("warning"), "children"), [Input(self.id("results"), "data")]
            )
            def show_warning(results):
                if results and "error" in results:
                    return MessageContainer(MessageBody(results["error"]))
                else:
                    return html.Div()

            @app.callback(
                Output(self.id("search_container"), "children"),
                [Input(self.id("random"), "n_clicks")],
            )
            def update_displayed_mpid(random_n_clicks):
                # TODO: this is a really awkward solution to a complex callback chain, improve in future?
                return self._make_search_box(search_term=choice(self.mpid_cache))

            @app.callback(Output(self.id(), "data"), [Input(self.id("dropdown"), "value")])
            def update_store_from_value(mpid):
                return mpid