// Copyright (C) The Arvados Authors. All rights reserved.
//
// SPDX-License-Identifier: AGPL-3.0

import React, { ReactElement, memo, useState } from "react";
import { Dispatch } from "redux";
import {
    StyleRulesCallback,
    WithStyles,
    withStyles,
    Card,
    CardHeader,
    IconButton,
    CardContent,
    Tooltip,
    Typography,
    Tabs,
    Tab,
    Table,
    TableHead,
    TableBody,
    TableRow,
    TableCell,
    Paper,
    Grid,
    Chip,
    CircularProgress,
} from "@material-ui/core";
import { ArvadosTheme } from "common/custom-theme";
import { CloseIcon, ImageIcon, InputIcon, ImageOffIcon, OutputIcon, MaximizeIcon, UnMaximizeIcon, InfoIcon } from "components/icon/icon";
import { MPVPanelProps } from "components/multi-panel-view/multi-panel-view";
import {
    BooleanCommandInputParameter,
    CommandInputParameter,
    CWLType,
    Directory,
    DirectoryArrayCommandInputParameter,
    DirectoryCommandInputParameter,
    EnumCommandInputParameter,
    FileArrayCommandInputParameter,
    FileCommandInputParameter,
    FloatArrayCommandInputParameter,
    FloatCommandInputParameter,
    IntArrayCommandInputParameter,
    IntCommandInputParameter,
    isArrayOfType,
    isPrimitiveOfType,
    StringArrayCommandInputParameter,
    StringCommandInputParameter,
    getEnumType,
} from "models/workflow";
import { CommandOutputParameter } from "cwlts/mappings/v1.0/CommandOutputParameter";
import { File } from "models/workflow";
import { getInlineFileUrl } from "views-components/context-menu/actions/helpers";
import { AuthState } from "store/auth/auth-reducer";
import mime from "mime";
import { DefaultView } from "components/default-view/default-view";
import { getNavUrl } from "routes/routes";
import { Link as RouterLink } from "react-router-dom";
import { Link as MuiLink } from "@material-ui/core";
import { InputCollectionMount } from "store/processes/processes-actions";
import { connect } from "react-redux";
import { RootState } from "store/store";
import { ProcessOutputCollectionFiles } from "./process-output-collection-files";
import { Process } from "store/processes/process";
import { navigateTo } from "store/navigation/navigation-action";
import classNames from "classnames";
import { DefaultCodeSnippet } from "components/default-code-snippet/default-code-snippet";
import { KEEP_URL_REGEX } from "models/resource";

type CssRules =
    | "card"
    | "content"
    | "title"
    | "header"
    | "avatar"
    | "iconHeader"
    | "tableWrapper"
    | "tableRoot"
    | "paramValue"
    | "keepLink"
    | "collectionLink"
    | "imagePreview"
    | "valArray"
    | "secondaryVal"
    | "secondaryRow"
    | "emptyValue"
    | "noBorderRow"
    | "symmetricTabs"
    | "imagePlaceholder"
    | "rowWithPreview"
    | "labelColumn";

const styles: StyleRulesCallback<CssRules> = (theme: ArvadosTheme) => ({
    card: {
        height: "100%",
    },
    header: {
        paddingTop: theme.spacing.unit,
        paddingBottom: 0,
    },
    iconHeader: {
        fontSize: "1.875rem",
        color: theme.customs.colors.greyL,
    },
    avatar: {
        alignSelf: "flex-start",
        paddingTop: theme.spacing.unit * 0.5,
    },
    content: {
        height: `calc(100% - ${theme.spacing.unit * 7}px - ${theme.spacing.unit * 1.5}px)`,
        padding: theme.spacing.unit * 1.0,
        paddingTop: 0,
        "&:last-child": {
            paddingBottom: theme.spacing.unit * 1,
        },
    },
    title: {
        overflow: "hidden",
        paddingTop: theme.spacing.unit * 0.5,
        color: theme.customs.colors.greyD,
        fontSize: "1.875rem",
    },
    tableWrapper: {
        height: "auto",
        maxHeight: `calc(100% - ${theme.spacing.unit * 4.5}px)`,
        overflow: "auto",
    },
    tableRoot: {
        width: "100%",
        "& thead th": {
            verticalAlign: "bottom",
            paddingBottom: "10px",
        },
        "& td, & th": {
            paddingRight: "25px",
        },
    },
    paramValue: {
        display: "flex",
        alignItems: "flex-start",
        flexDirection: "column",
    },
    keepLink: {
        color: theme.palette.primary.main,
        textDecoration: "none",
        overflowWrap: "break-word",
        cursor: "pointer",
    },
    collectionLink: {
        margin: "10px",
        "& a": {
            color: theme.palette.primary.main,
            textDecoration: "none",
            overflowWrap: "break-word",
            cursor: "pointer",
        },
    },
    imagePreview: {
        maxHeight: "15em",
        maxWidth: "15em",
        marginBottom: theme.spacing.unit,
    },
    valArray: {
        display: "flex",
        gap: "10px",
        flexWrap: "wrap",
        "& span": {
            display: "inline",
        },
    },
    secondaryVal: {
        paddingLeft: "20px",
    },
    secondaryRow: {
        height: "29px",
        verticalAlign: "top",
        position: "relative",
        top: "-9px",
    },
    emptyValue: {
        color: theme.customs.colors.grey700,
    },
    noBorderRow: {
        "& td": {
            borderBottom: "none",
        },
    },
    symmetricTabs: {
        "& button": {
            flexBasis: "0",
        },
    },
    imagePlaceholder: {
        width: "60px",
        height: "60px",
        display: "flex",
        alignItems: "center",
        justifyContent: "center",
        backgroundColor: "#cecece",
        borderRadius: "10px",
    },
    rowWithPreview: {
        verticalAlign: "bottom",
    },
    labelColumn: {
        minWidth: "120px",
    },
});

export enum ProcessIOCardType {
    INPUT = "Inputs",
    OUTPUT = "Outputs",
}
export interface ProcessIOCardDataProps {
    process?: Process;
    label: ProcessIOCardType;
    params: ProcessIOParameter[] | null;
    raw: any;
    mounts?: InputCollectionMount[];
    outputUuid?: string;
    showParams?: boolean;
}

export interface ProcessIOCardActionProps {
    navigateTo: (uuid: string) => void;
}

const mapDispatchToProps = (dispatch: Dispatch): ProcessIOCardActionProps => ({
    navigateTo: uuid => dispatch<any>(navigateTo(uuid)),
});

type ProcessIOCardProps = ProcessIOCardDataProps & ProcessIOCardActionProps & WithStyles<CssRules> & MPVPanelProps;

export const ProcessIOCard = withStyles(styles)(
    connect(
        null,
        mapDispatchToProps
    )(
        ({
            classes,
            label,
            params,
            raw,
            mounts,
            outputUuid,
            doHidePanel,
            doMaximizePanel,
            doUnMaximizePanel,
            panelMaximized,
            panelName,
            process,
            navigateTo,
            showParams,
        }: ProcessIOCardProps) => {
            const [mainProcTabState, setMainProcTabState] = useState(0);
            const [subProcTabState, setSubProcTabState] = useState(0);
            const handleMainProcTabChange = (event: React.MouseEvent<HTMLElement>, value: number) => {
                setMainProcTabState(value);
            };
            const handleSubProcTabChange = (event: React.MouseEvent<HTMLElement>, value: number) => {
                setSubProcTabState(value);
            };

            const [showImagePreview, setShowImagePreview] = useState(false);

            const PanelIcon = label === ProcessIOCardType.INPUT ? InputIcon : OutputIcon;
            const mainProcess = !(process && process!.containerRequest.requestingContainerUuid);

            const loading = raw === null || raw === undefined || params === null;
            const hasRaw = !!(raw && Object.keys(raw).length > 0);
            const hasParams = !!(params && params.length > 0);

            // Subprocess
            const hasInputMounts = !!(label === ProcessIOCardType.INPUT && mounts && mounts.length);
            const hasOutputCollecton = !!(label === ProcessIOCardType.OUTPUT && outputUuid);

            return (
                <Card
                    className={classes.card}
                    data-cy="process-io-card"
                >
                    <CardHeader
                        className={classes.header}
                        classes={{
                            content: classes.title,
                            avatar: classes.avatar,
                        }}
                        avatar={<PanelIcon className={classes.iconHeader} />}
                        title={
                            <Typography
                                noWrap
                                variant="h6"
                                color="inherit"
                            >
                                {label}
                            </Typography>
                        }
                        action={
                            <div>
                                {mainProcess && (
                                    <Tooltip
                                        title={"Toggle Image Preview"}
                                        disableFocusListener
                                    >
                                        <IconButton
                                            data-cy="io-preview-image-toggle"
                                            onClick={() => {
                                                setShowImagePreview(!showImagePreview);
                                            }}
                                        >
                                            {showImagePreview ? <ImageIcon /> : <ImageOffIcon />}
                                        </IconButton>
                                    </Tooltip>
                                )}
                                {doUnMaximizePanel && panelMaximized && (
                                    <Tooltip
                                        title={`Unmaximize ${panelName || "panel"}`}
                                        disableFocusListener
                                    >
                                        <IconButton onClick={doUnMaximizePanel}>
                                            <UnMaximizeIcon />
                                        </IconButton>
                                    </Tooltip>
                                )}
                                {doMaximizePanel && !panelMaximized && (
                                    <Tooltip
                                        title={`Maximize ${panelName || "panel"}`}
                                        disableFocusListener
                                    >
                                        <IconButton onClick={doMaximizePanel}>
                                            <MaximizeIcon />
                                        </IconButton>
                                    </Tooltip>
                                )}
                                {doHidePanel && (
                                    <Tooltip
                                        title={`Close ${panelName || "panel"}`}
                                        disableFocusListener
                                    >
                                        <IconButton
                                            disabled={panelMaximized}
                                            onClick={doHidePanel}
                                        >
                                            <CloseIcon />
                                        </IconButton>
                                    </Tooltip>
                                )}
                            </div>
                        }
                    />
                    <CardContent className={classes.content}>
                        {mainProcess || showParams ? (
                            <>
                                {/* raw is undefined until params are loaded */}
                                {loading && (
                                    <Grid
                                        container
                                        item
                                        alignItems="center"
                                        justify="center"
                                    >
                                        <CircularProgress />
                                    </Grid>
                                )}
                                {/* Once loaded, either raw or params may still be empty
                                 *   Raw when all params are empty
                                 *   Params when raw is provided by containerRequest properties but workflow mount is absent for preview
                                 */}
                                {!loading && (hasRaw || hasParams) && (
                                    <>
                                        <Tabs
                                            value={mainProcTabState}
                                            onChange={handleMainProcTabChange}
                                            variant="fullWidth"
                                            className={classes.symmetricTabs}
                                        >
                                            {/* params will be empty on processes without workflow definitions in mounts, so we only show raw */}
                                            {hasParams && <Tab label="Parameters" />}
                                            {!showParams && <Tab label="JSON" />}
                                        </Tabs>
                                        {mainProcTabState === 0 && params && hasParams && (
                                            <div className={classes.tableWrapper}>
                                                <ProcessIOPreview
                                                    data={params}
                                                    showImagePreview={showImagePreview}
                                                    valueLabel={showParams ? "Default value" : "Value"}
                                                />
                                            </div>
                                        )}
                                        {(mainProcTabState === 1 || !hasParams) && (
                                            <div className={classes.tableWrapper}>
                                                <ProcessIORaw data={raw} />
                                            </div>
                                        )}
                                    </>
                                )}
                                {!loading && !hasRaw && !hasParams && (
                                    <Grid
                                        container
                                        item
                                        alignItems="center"
                                        justify="center"
                                    >
                                        <DefaultView messages={["No parameters found"]} />
                                    </Grid>
                                )}
                            </>
                        ) : (
                            // Subprocess
                            <>
                                {loading && (
                                    <Grid
                                        container
                                        item
                                        alignItems="center"
                                        justify="center"
                                    >
                                        <CircularProgress />
                                    </Grid>
                                )}
                                {!loading && (hasInputMounts || hasOutputCollecton || hasRaw) ? (
                                    <>
                                        <Tabs
                                            value={subProcTabState}
                                            onChange={handleSubProcTabChange}
                                            variant="fullWidth"
                                            className={classes.symmetricTabs}
                                        >
                                            {hasInputMounts && <Tab label="Collections" />}
                                            {hasOutputCollecton && <Tab label="Collection" />}
                                            <Tab label="JSON" />
                                        </Tabs>
                                        <div className={classes.tableWrapper}>
                                            {subProcTabState === 0 && hasInputMounts && <ProcessInputMounts mounts={mounts || []} />}
                                            {subProcTabState === 0 && hasOutputCollecton && (
                                                <>
                                                    {outputUuid && (
                                                        <Typography className={classes.collectionLink}>
                                                            Output Collection:{" "}
                                                            <MuiLink
                                                                className={classes.keepLink}
                                                                onClick={() => {
                                                                    navigateTo(outputUuid || "");
                                                                }}
                                                            >
                                                                {outputUuid}
                                                            </MuiLink>
                                                        </Typography>
                                                    )}
                                                    <ProcessOutputCollectionFiles
                                                        isWritable={false}
                                                        currentItemUuid={outputUuid}
                                                    />
                                                </>
                                            )}
                                            {(subProcTabState === 1 || (!hasInputMounts && !hasOutputCollecton)) && (
                                                <div className={classes.tableWrapper}>
                                                    <ProcessIORaw data={raw} />
                                                </div>
                                            )}
                                        </div>
                                    </>
                                ) : (
                                    <Grid
                                        container
                                        item
                                        alignItems="center"
                                        justify="center"
                                    >
                                        <DefaultView messages={["No data to display"]} />
                                    </Grid>
                                )}
                            </>
                        )}
                    </CardContent>
                </Card>
            );
        }
    )
);

export type ProcessIOValue = {
    display: ReactElement<any, any>;
    imageUrl?: string;
    collection?: ReactElement<any, any>;
    secondary?: boolean;
};

export type ProcessIOParameter = {
    id: string;
    label: string;
    value: ProcessIOValue[];
};

interface ProcessIOPreviewDataProps {
    data: ProcessIOParameter[];
    showImagePreview: boolean;
    valueLabel: string;
}

type ProcessIOPreviewProps = ProcessIOPreviewDataProps & WithStyles<CssRules>;

const ProcessIOPreview = memo(
    withStyles(styles)(({ classes, data, showImagePreview, valueLabel }: ProcessIOPreviewProps) => {
        const showLabel = data.some((param: ProcessIOParameter) => param.label);
        return (
            <Table
                className={classes.tableRoot}
                aria-label="Process IO Preview"
            >
                <TableHead>
                    <TableRow>
                        <TableCell>Name</TableCell>
                        {showLabel && <TableCell className={classes.labelColumn}>Label</TableCell>}
                        <TableCell>{valueLabel}</TableCell>
                        <TableCell>Collection</TableCell>
                    </TableRow>
                </TableHead>
                <TableBody>
                    {data.map((param: ProcessIOParameter) => {
                        const firstVal = param.value.length > 0 ? param.value[0] : undefined;
                        const rest = param.value.slice(1);
                        const mainRowClasses = {
                            [classes.noBorderRow]: rest.length > 0,
                        };

                        return (
                            <React.Fragment key={param.id}>
                                <TableRow
                                    className={classNames(mainRowClasses)}
                                    data-cy="process-io-param"
                                >
                                    <TableCell>{param.id}</TableCell>
                                    {showLabel && <TableCell>{param.label}</TableCell>}
                                    <TableCell>
                                        {firstVal && (
                                            <ProcessValuePreview
                                                value={firstVal}
                                                showImagePreview={showImagePreview}
                                            />
                                        )}
                                    </TableCell>
                                    <TableCell className={firstVal?.imageUrl ? classes.rowWithPreview : undefined}>
                                        <Typography className={classes.paramValue}>{firstVal?.collection}</Typography>
                                    </TableCell>
                                </TableRow>
                                {rest.map((val, i) => {
                                    const rowClasses = {
                                        [classes.noBorderRow]: i < rest.length - 1,
                                        [classes.secondaryRow]: val.secondary,
                                    };
                                    return (
                                        <TableRow
                                            className={classNames(rowClasses)}
                                            key={i}
                                        >
                                            <TableCell />
                                            {showLabel && <TableCell />}
                                            <TableCell>
                                                <ProcessValuePreview
                                                    value={val}
                                                    showImagePreview={showImagePreview}
                                                />
                                            </TableCell>
                                            <TableCell className={firstVal?.imageUrl ? classes.rowWithPreview : undefined}>
                                                <Typography className={classes.paramValue}>{val.collection}</Typography>
                                            </TableCell>
                                        </TableRow>
                                    );
                                })}
                            </React.Fragment>
                        );
                    })}
                </TableBody>
            </Table>
        );
    })
);

interface ProcessValuePreviewProps {
    value: ProcessIOValue;
    showImagePreview: boolean;
}

const ProcessValuePreview = withStyles(styles)(({ value, showImagePreview, classes }: ProcessValuePreviewProps & WithStyles<CssRules>) => (
    <Typography className={classes.paramValue}>
        {value.imageUrl && showImagePreview ? (
            <img
                className={classes.imagePreview}
                src={value.imageUrl}
                alt="Inline Preview"
            />
        ) : (
            ""
        )}
        {value.imageUrl && !showImagePreview ? <ImagePlaceholder /> : ""}
        <span className={classNames(classes.valArray, value.secondary && classes.secondaryVal)}>{value.display}</span>
    </Typography>
));

interface ProcessIORawDataProps {
    data: ProcessIOParameter[];
}

const ProcessIORaw = withStyles(styles)(({ data }: ProcessIORawDataProps) => (
    <Paper elevation={0}>
        <DefaultCodeSnippet
            lines={[JSON.stringify(data, null, 2)]}
            linked
        />
    </Paper>
));

interface ProcessInputMountsDataProps {
    mounts: InputCollectionMount[];
}

type ProcessInputMountsProps = ProcessInputMountsDataProps & WithStyles<CssRules>;

const ProcessInputMounts = withStyles(styles)(
    connect((state: RootState) => ({
        auth: state.auth,
    }))(({ mounts, classes, auth }: ProcessInputMountsProps & { auth: AuthState }) => (
        <Table
            className={classes.tableRoot}
            aria-label="Process Input Mounts"
        >
            <TableHead>
                <TableRow>
                    <TableCell>Path</TableCell>
                    <TableCell>Portable Data Hash</TableCell>
                </TableRow>
            </TableHead>
            <TableBody>
                {mounts.map(mount => (
                    <TableRow key={mount.path}>
                        <TableCell>
                            <pre>{mount.path}</pre>
                        </TableCell>
                        <TableCell>
                            <RouterLink
                                to={getNavUrl(mount.pdh, auth)}
                                className={classes.keepLink}
                            >
                                {mount.pdh}
                            </RouterLink>
                        </TableCell>
                    </TableRow>
                ))}
            </TableBody>
        </Table>
    ))
);

type FileWithSecondaryFiles = {
    secondaryFiles: File[];
};

export const getIOParamDisplayValue = (auth: AuthState, input: CommandInputParameter | CommandOutputParameter, pdh?: string): ProcessIOValue[] => {
    switch (true) {
        case isPrimitiveOfType(input, CWLType.BOOLEAN):
            const boolValue = (input as BooleanCommandInputParameter).value;
            return boolValue !== undefined && !(Array.isArray(boolValue) && boolValue.length === 0)
                ? [{ display: renderPrimitiveValue(boolValue, false) }]
                : [{ display: <EmptyValue /> }];

        case isPrimitiveOfType(input, CWLType.INT):
        case isPrimitiveOfType(input, CWLType.LONG):
            const intValue = (input as IntCommandInputParameter).value;
            return intValue !== undefined &&
                // Missing values are empty array
                !(Array.isArray(intValue) && intValue.length === 0)
                ? [{ display: renderPrimitiveValue(intValue, false) }]
                : [{ display: <EmptyValue /> }];

        case isPrimitiveOfType(input, CWLType.FLOAT):
        case isPrimitiveOfType(input, CWLType.DOUBLE):
            const floatValue = (input as FloatCommandInputParameter).value;
            return floatValue !== undefined && !(Array.isArray(floatValue) && floatValue.length === 0)
                ? [{ display: renderPrimitiveValue(floatValue, false) }]
                : [{ display: <EmptyValue /> }];

        case isPrimitiveOfType(input, CWLType.STRING):
            const stringValue = (input as StringCommandInputParameter).value || undefined;
            return stringValue !== undefined && !(Array.isArray(stringValue) && stringValue.length === 0)
                ? [{ display: renderPrimitiveValue(stringValue, false) }]
                : [{ display: <EmptyValue /> }];

        case isPrimitiveOfType(input, CWLType.FILE):
            const mainFile = (input as FileCommandInputParameter).value;
            // secondaryFiles: File[] is not part of CommandOutputParameter so we cast to access secondaryFiles
            const secondaryFiles = (mainFile as unknown as FileWithSecondaryFiles)?.secondaryFiles || [];
            const files = [...(mainFile && !(Array.isArray(mainFile) && mainFile.length === 0) ? [mainFile] : []), ...secondaryFiles];
            const mainFilePdhUrl = mainFile ? getResourcePdhUrl(mainFile, pdh) : "";
            return files.length
                ? files.map((file, i) => fileToProcessIOValue(file, i > 0, auth, pdh, i > 0 ? mainFilePdhUrl : ""))
                : [{ display: <EmptyValue /> }];

        case isPrimitiveOfType(input, CWLType.DIRECTORY):
            const directory = (input as DirectoryCommandInputParameter).value;
            return directory !== undefined && !(Array.isArray(directory) && directory.length === 0)
                ? [directoryToProcessIOValue(directory, auth, pdh)]
                : [{ display: <EmptyValue /> }];

        case getEnumType(input) !== null:
            const enumValue = (input as EnumCommandInputParameter).value;
            return enumValue !== undefined && enumValue ? [{ display: <pre>{enumValue}</pre> }] : [{ display: <EmptyValue /> }];

        case isArrayOfType(input, CWLType.STRING):
            const strArray = (input as StringArrayCommandInputParameter).value || [];
            return strArray.length ? [{ display: <>{strArray.map(val => renderPrimitiveValue(val, true))}</> }] : [{ display: <EmptyValue /> }];

        case isArrayOfType(input, CWLType.INT):
        case isArrayOfType(input, CWLType.LONG):
            const intArray = (input as IntArrayCommandInputParameter).value || [];
            return intArray.length ? [{ display: <>{intArray.map(val => renderPrimitiveValue(val, true))}</> }] : [{ display: <EmptyValue /> }];

        case isArrayOfType(input, CWLType.FLOAT):
        case isArrayOfType(input, CWLType.DOUBLE):
            const floatArray = (input as FloatArrayCommandInputParameter).value || [];
            return floatArray.length ? [{ display: <>{floatArray.map(val => renderPrimitiveValue(val, true))}</> }] : [{ display: <EmptyValue /> }];

        case isArrayOfType(input, CWLType.FILE):
            const fileArrayMainFiles = (input as FileArrayCommandInputParameter).value || [];
            const firstMainFilePdh = fileArrayMainFiles.length > 0 && fileArrayMainFiles[0] ? getResourcePdhUrl(fileArrayMainFiles[0], pdh) : "";

            // Convert each main and secondaryFiles into array of ProcessIOValue preserving ordering
            let fileArrayValues: ProcessIOValue[] = [];
            for (let i = 0; i < fileArrayMainFiles.length; i++) {
                const secondaryFiles = (fileArrayMainFiles[i] as unknown as FileWithSecondaryFiles)?.secondaryFiles || [];
                fileArrayValues.push(
                    // Pass firstMainFilePdh to secondary files and every main file besides the first to hide pdh if equal
                    ...(fileArrayMainFiles[i] ? [fileToProcessIOValue(fileArrayMainFiles[i], false, auth, pdh, i > 0 ? firstMainFilePdh : "")] : []),
                    ...secondaryFiles.map(file => fileToProcessIOValue(file, true, auth, pdh, firstMainFilePdh))
                );
            }

            return fileArrayValues.length ? fileArrayValues : [{ display: <EmptyValue /> }];

        case isArrayOfType(input, CWLType.DIRECTORY):
            const directories = (input as DirectoryArrayCommandInputParameter).value || [];
            return directories.length ? directories.map(directory => directoryToProcessIOValue(directory, auth, pdh)) : [{ display: <EmptyValue /> }];

        default:
            return [{ display: <UnsupportedValue /> }];
    }
};

const renderPrimitiveValue = (value: any, asChip: boolean) => {
    const isObject = typeof value === "object";
    if (!isObject) {
        return asChip ? (
            <Chip
                key={value}
                label={String(value)}
            />
        ) : (
            <pre key={value}>{String(value)}</pre>
        );
    } else {
        return asChip ? <UnsupportedValueChip /> : <UnsupportedValue />;
    }
};

/*
 * @returns keep url without keep: prefix
 */
const getKeepUrl = (file: File | Directory, pdh?: string): string => {
    const isKeepUrl = file.location?.startsWith("keep:") || false;
    const keepUrl = isKeepUrl ? file.location?.replace("keep:", "") : pdh ? `${pdh}/${file.location}` : file.location;
    return keepUrl || "";
};

interface KeepUrlProps {
    auth: AuthState;
    res: File | Directory;
    pdh?: string;
}

const getResourcePdhUrl = (res: File | Directory, pdh?: string): string => {
    const keepUrl = getKeepUrl(res, pdh);
    return keepUrl ? keepUrl.split("/").slice(0, 1)[0] : "";
};

const KeepUrlBase = withStyles(styles)(({ auth, res, pdh, classes }: KeepUrlProps & WithStyles<CssRules>) => {
    const pdhUrl = getResourcePdhUrl(res, pdh);
    // Passing a pdh always returns a relative wb2 collection url
    const pdhWbPath = getNavUrl(pdhUrl, auth);
    return pdhUrl && pdhWbPath ? (
        <Tooltip title={"View collection in Workbench"}>
            <RouterLink
                to={pdhWbPath}
                className={classes.keepLink}
            >
                {pdhUrl}
            </RouterLink>
        </Tooltip>
    ) : (
        <></>
    );
});

const KeepUrlPath = withStyles(styles)(({ auth, res, pdh, classes }: KeepUrlProps & WithStyles<CssRules>) => {
    const keepUrl = getKeepUrl(res, pdh);
    const keepUrlParts = keepUrl ? keepUrl.split("/") : [];
    const keepUrlPath = keepUrlParts.length > 1 ? keepUrlParts.slice(1).join("/") : "";

    const keepUrlPathNav = getKeepNavUrl(auth, res, pdh);
    return keepUrlPathNav ? (
        <Tooltip title={"View in keep-web"}>
            <a
                className={classes.keepLink}
                href={keepUrlPathNav}
                target="_blank"
                rel="noopener noreferrer"
            >
                {keepUrlPath || "/"}
            </a>
        </Tooltip>
    ) : (
        <EmptyValue />
    );
});

const getKeepNavUrl = (auth: AuthState, file: File | Directory, pdh?: string): string => {
    let keepUrl = getKeepUrl(file, pdh);
    return getInlineFileUrl(
        `${auth.config.keepWebServiceUrl}/c=${keepUrl}?api_token=${auth.apiToken}`,
        auth.config.keepWebServiceUrl,
        auth.config.keepWebInlineServiceUrl
    );
};

const getImageUrl = (auth: AuthState, file: File, pdh?: string): string => {
    const keepUrl = getKeepUrl(file, pdh);
    return getInlineFileUrl(
        `${auth.config.keepWebServiceUrl}/c=${keepUrl}?api_token=${auth.apiToken}`,
        auth.config.keepWebServiceUrl,
        auth.config.keepWebInlineServiceUrl
    );
};

const isFileImage = (basename?: string): boolean => {
    return basename ? (mime.getType(basename) || "").startsWith("image/") : false;
};

const isFileUrl = (location?: string): boolean =>
    !!location && !KEEP_URL_REGEX.exec(location) && (location.startsWith("http://") || location.startsWith("https://"));

const normalizeDirectoryLocation = (directory: Directory): Directory => {
    if (!directory.location) {
        return directory;
    }
    return {
        ...directory,
        location: (directory.location || "").endsWith("/") ? directory.location : directory.location + "/",
    };
};

const directoryToProcessIOValue = (directory: Directory, auth: AuthState, pdh?: string): ProcessIOValue => {
    if (isExternalValue(directory)) {
        return { display: <UnsupportedValue /> };
    }

    const normalizedDirectory = normalizeDirectoryLocation(directory);
    return {
        display: (
            <KeepUrlPath
                auth={auth}
                res={normalizedDirectory}
                pdh={pdh}
            />
        ),
        collection: (
            <KeepUrlBase
                auth={auth}
                res={normalizedDirectory}
                pdh={pdh}
            />
        ),
    };
};

const fileToProcessIOValue = (file: File, secondary: boolean, auth: AuthState, pdh: string | undefined, mainFilePdh: string): ProcessIOValue => {
    if (isExternalValue(file)) {
        return { display: <UnsupportedValue /> };
    }

    if (isFileUrl(file.location)) {
        return {
            display: (
                <MuiLink
                    href={file.location}
                    target="_blank"
                >
                    {file.location}
                </MuiLink>
            ),
            secondary,
        };
    }

    const resourcePdh = getResourcePdhUrl(file, pdh);
    return {
        display: (
            <KeepUrlPath
                auth={auth}
                res={file}
                pdh={pdh}
            />
        ),
        secondary,
        imageUrl: isFileImage(file.basename) ? getImageUrl(auth, file, pdh) : undefined,
        collection:
            resourcePdh !== mainFilePdh ? (
                <KeepUrlBase
                    auth={auth}
                    res={file}
                    pdh={pdh}
                />
            ) : (
                <></>
            ),
    };
};

const isExternalValue = (val: any) => Object.keys(val).includes("$import") || Object.keys(val).includes("$include");

export const EmptyValue = withStyles(styles)(({ classes }: WithStyles<CssRules>) => <span className={classes.emptyValue}>No value</span>);

const UnsupportedValue = withStyles(styles)(({ classes }: WithStyles<CssRules>) => <span className={classes.emptyValue}>Cannot display value</span>);

const UnsupportedValueChip = withStyles(styles)(({ classes }: WithStyles<CssRules>) => (
    <Chip
        icon={<InfoIcon />}
        label={"Cannot display value"}
    />
));

const ImagePlaceholder = withStyles(styles)(({ classes }: WithStyles<CssRules>) => (
    <span className={classes.imagePlaceholder}>
        <ImageIcon />
    </span>
));