import * as _ from 'lodash';
import * as React from 'react';
import {Comment} from 'ts/pages/documentation/comment';
import {DocsInfo} from 'ts/pages/documentation/docs_info';
import {MethodSignature} from 'ts/pages/documentation/method_signature';
import {SourceLink} from 'ts/pages/documentation/source_link';
import {AnchorTitle} from 'ts/pages/shared/anchor_title';
import {
    HeaderSizes,
    Parameter,
    SolidityMethod,
    Styles,
    TypeDefinitionByName,
    TypescriptMethod,
} from 'ts/types';
import {colors} from 'ts/utils/colors';
import {typeDocUtils} from 'ts/utils/typedoc_utils';

interface MethodBlockProps {
    method: SolidityMethod|TypescriptMethod;
    libraryVersion: string;
    typeDefinitionByName: TypeDefinitionByName;
    docsInfo: DocsInfo;
}

interface MethodBlockState {
    shouldShowAnchor: boolean;
}

const styles: Styles = {
    chip: {
        fontSize: 13,
        backgroundColor: colors.lightBlueA700,
        color: colors.white,
        height: 11,
        borderRadius: 14,
        marginTop: 19,
        lineHeight: 0.8,
    },
};

export class MethodBlock extends React.Component<MethodBlockProps, MethodBlockState> {
    constructor(props: MethodBlockProps) {
        super(props);
        this.state = {
            shouldShowAnchor: false,
        };
    }
    public render() {
        const method = this.props.method;
        if (typeDocUtils.isPrivateOrProtectedProperty(method.name)) {
            return null;
        }

        return (
            <div
                id={method.name}
                style={{overflow: 'hidden', width: '100%'}}
                className="pb4"
                onMouseOver={this.setAnchorVisibility.bind(this, true)}
                onMouseOut={this.setAnchorVisibility.bind(this, false)}
            >
                {!method.isConstructor &&
                    <div className="flex">
                        {(method as TypescriptMethod).isStatic &&
                            this.renderChip('Static')
                        }
                        {(method as SolidityMethod).isConstant &&
                            this.renderChip('Constant')
                        }
                        {(method as SolidityMethod).isPayable &&
                            this.renderChip('Payable')
                        }
                        <AnchorTitle
                            headerSize={HeaderSizes.H3}
                            title={method.name}
                            id={method.name}
                            shouldShowAnchor={this.state.shouldShowAnchor}
                        />
                    </div>
                }
                <code className="hljs">
                    <MethodSignature
                        method={method}
                        typeDefinitionByName={this.props.typeDefinitionByName}
                        docsInfo={this.props.docsInfo}
                    />
                </code>
                {(method as TypescriptMethod).source &&
                    <SourceLink
                        version={this.props.libraryVersion}
                        source={(method as TypescriptMethod).source}
                        baseUrl={this.props.docsInfo.packageUrl}
                        subPackageName={this.props.docsInfo.subPackageName}
                    />
                }
                {method.comment &&
                    <Comment
                        comment={method.comment}
                        className="py2"
                    />
                }
                {method.parameters && !_.isEmpty(method.parameters) &&
                    <div>
                        <h4
                            className="pb1 thin"
                            style={{borderBottom: '1px solid #e1e8ed'}}
                        >
                            ARGUMENTS
                        </h4>
                        {this.renderParameterDescriptions(method.parameters)}
                    </div>
                }
                {method.returnComment &&
                    <div className="pt1 comment">
                        <h4
                            className="pb1 thin"
                            style={{borderBottom: '1px solid #e1e8ed'}}
                        >
                            RETURNS
                        </h4>
                        <Comment
                            comment={method.returnComment}
                        />
                    </div>
                }
            </div>
        );
    }
    private renderChip(text: string) {
        return (
            <div
                className="p1 mr1"
                style={styles.chip}
            >
                {text}
            </div>
        );
    }
    private renderParameterDescriptions(parameters: Parameter[]) {
        const descriptions = _.map(parameters, parameter => {
            const isOptional = parameter.isOptional;
            return (
                <div
                    key={`param-description-${parameter.name}`}
                    className="flex pb1 mb2"
                    style={{borderBottom: '1px solid #f0f4f7'}}
                >
                    <div className="pl2 col lg-col-4 md-col-4 sm-col-12 col-12">
                        <div className="bold">
                            {parameter.name}
                        </div>
                        <div className="pt1" style={{color: colors.grey, fontSize: 14}}>
                            {isOptional && 'optional'}
                        </div>
                    </div>
                    <div className="col lg-col-8 md-col-8 sm-col-12 col-12">
                        {parameter.comment &&
                            <Comment
                                comment={parameter.comment}
                            />
                        }
                    </div>
                </div>
            );
        });
        return descriptions;
    }
    private setAnchorVisibility(shouldShowAnchor: boolean) {
        this.setState({
            shouldShowAnchor,
        });
    }
}