// (C) 2007-2021 GoodData Corporation
import { getProjectId, IProject } from "../../model/Project";
import { objectUri, elementsUri } from "../../route/routes";
import { ensureIdentifier } from "../helpers/objects";
import { webalize } from "../../utils/string";
import { IAttribute } from "../../model/Attribute";
import { INestedAttributeDisplayForm } from "../../model/NestedAttributeDisplayForm";
import {
    ISchemaAttribute,
    ISchemaAttributeDisplayForm,
    SchemaAttributeDisplayFormType,
} from "../model/SchemaAttribute";

export const createAttributeIdentifier = (attribute: ISchemaAttribute) => `attr.${webalize(attribute.title)}`;

function getDisplayFormType(type: SchemaAttributeDisplayFormType) {
    switch (type) {
        case "hyperlink":
            return "GDC.link";
        case "geoPin":
            return "GDC.geo.pin";
        case "text":
        default:
            return undefined;
    }
}

function createDefaultDisplayForm(
    project: IProject,
    attributeId: string,
    attribute: ISchemaAttribute,
): INestedAttributeDisplayForm {
    const projectId = project.meta.identifier;
    const displayFormId = `${attributeId}.df`;
    const type = attribute.defaultDisplayFormType;

    return createDisplayForm(projectId, type, displayFormId, attributeId, attribute.title);
}

function createAdditionalDisplayForms(projectId: string, attributeId: string, attribute: ISchemaAttribute) {
    const additionalDisplayForms = attribute.additionalDisplayForms || [];
    return additionalDisplayForms.map((displayForm: ISchemaAttributeDisplayForm) => {
        const title = `${attribute.title} (${displayForm.identifier})`;
        const type = getDisplayFormType(displayForm.type);
        return createDisplayForm(projectId, type, displayForm.identifier, attributeId, title);
    });
}

function createDisplayForm(
    projectId: string,
    type: string,
    displayFormId: string,
    attributeId: string,
    title: string,
): INestedAttributeDisplayForm {
    return {
        content: {
            expression: `[${objectUri(projectId, "123")}]`,
            formOf: objectUri(projectId, attributeId),
            type,
        },

        links: {
            elements: elementsUri(projectId, attributeId),
        },

        meta: {
            category: "attributeDisplayForm",
            identifier: displayFormId,
            title,
            uri: objectUri(projectId, displayFormId),
        },
    };
}

export function createAttribute(project: IProject, attribute: ISchemaAttribute): IAttribute {
    const identifier = ensureIdentifier(attribute, createAttributeIdentifier(attribute));
    const projectId = getProjectId(project);
    const drillDown = attribute.drillDownStepAttributeDF
        ? {
              drillDownStepAttributeDF: objectUri(projectId, attribute.drillDownStepAttributeDF),
          }
        : {};

    return {
        content: {
            displayForms: [
                createDefaultDisplayForm(project, identifier, attribute),
                ...createAdditionalDisplayForms(projectId, identifier, attribute),
            ],
            ...drillDown,
        },

        meta: {
            category: "attribute",
            title: attribute.title,
            identifier,
            uri: objectUri(projectId, identifier),
            tags: attribute.tags,
        },
    };
}