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import { localizeUrl } from '@automattic/i18n-utils';
import { type I18N } from 'i18n-calypso';
import { ReactNode } from 'react';
import { formatMsValue } from 'calypso/site-profiler/utils/format-ms-value';
import type { BasicMetricsScored, Metrics, Scores } from 'calypso/data/site-profiler/types';

type SubsetScores = Exclude< Scores, 'needs-improvement' >;

export type MetricsCopies = {
	[ score in SubsetScores ]: {
		diagnostic: string | ReactNode;
		solution: string | ReactNode;
		cta: string | ReactNode;
		url: string;
	};
};

type WpComNonWpCom = 'wpcom' | 'nonWpcom';

type CopiesProps = {
	title: string;
} & {
	[ key in WpComNonWpCom ]: MetricsCopies;
};

type CopiesReturnValue = {
	[ k in string ]: CopiesProps;
};

export type CopiesReturnValueList = [ Metrics, CopiesProps ][];
export function getCopies(
	basicMetrics: BasicMetricsScored,
	translate: I18N[ 'translate' ],
	domain: string
): CopiesReturnValue {
	const migrateUrl = `/setup/site-migration?ref=site-profiler&from=${ domain }`;
	const supportUrl = localizeUrl( 'https://wordpress.com/support' );

	const clsValue = basicMetrics?.cls?.value.toFixed( 2 );
	const fidValue = formatMsValue( basicMetrics?.fid?.value );
	const lcpValue = formatMsValue( basicMetrics?.lcp?.value );
	const fcpValue = formatMsValue( basicMetrics?.fcp?.value );
	const ttfbValue = formatMsValue( basicMetrics?.ttfb?.value );
	const inpValue = formatMsValue( basicMetrics?.inp?.value );

	const cls: CopiesProps = {
		title: translate( 'Cumulative Layout Shift (CLS)' ),
		nonWpcom: {
			good: {
				diagnostic: translate(
					"Your site's CLS is %(value)s, ensuring a stable layout. Excellent job maintaining low shifts!",
					{ args: { value: clsValue } }
				),
				solution: translate(
					"Migrate to WordPress.com to maintain this stability and further enhance your site's layout performance."
				),
				cta: translate( 'Enhance stability' ),
				url: migrateUrl,
			},
			poor: {
				diagnostic: translate(
					"Your site's CLS is %(value)s, higher than average, causing noticeable shifts. Aim for 0.1 for smoother layout.",
					{
						args: {
							value: clsValue,
						},
					}
				),
				solution: translate(
					'Migrate to WordPress.com for tools to reduce CLS and stabilize your layout.'
				),
				cta: translate( 'Migrate for stability' ),
				url: migrateUrl,
			},
		},
		wpcom: {
			good: {
				diagnostic: translate(
					"Your site's CLS is %(value)f, ensuring a stable layout. Great job maintaining low shifts.",
					{ args: { value: clsValue } }
				),
				solution: translate(
					"Keep up the good work! Continue using best practices to maintain your site's stability."
				),
				cta: translate( 'Explore Advanced Tips' ),
				url: supportUrl,
			},
			poor: {
				diagnostic: translate(
					"Your site's CLS is %(value)f, higher than average, causing noticeable shifts. Aim for 0.1 for smoother layout.",
					{ args: { value: clsValue } }
				),
				solution: translate(
					'Connect with a Happiness Engineer to reduce CLS and ensure a more stable layout for your users.'
				),
				cta: translate( 'Improve layout stability' ),
				url: supportUrl,
			},
		},
	};

	const fid: CopiesProps = {
		title: translate( 'First Input Delay (FID)' ),
		nonWpcom: {
			good: {
				diagnostic: translate(
					"Your site's FID is %(value)s, offering quick response times. Excellent job maintaining fast interactions!",
					{ args: { value: fidValue } }
				),
				solution: translate(
					'Migrate to WordPress.com to sustain this performance and further improve response times.'
				),
				cta: translate( 'Boost FID performance' ),
				url: migrateUrl,
			},
			poor: {
				diagnostic: translate(
					"Your site's FID is %(value)s, slower than most. Aim for less than 100ms for better responsiveness.",
					{
						args: {
							value: fidValue,
						},
					}
				),
				solution: translate(
					'Migrate to WordPress.com for improved FID and faster user interactions.'
				),
				cta: translate( 'Experience Better FID' ),
				url: migrateUrl,
			},
		},
		wpcom: {
			good: {
				diagnostic: translate(
					"Your site's FID is %(value)s, offering quick response times. Excellent job on maintaining swift interactions!",
					{ args: { value: fidValue } }
				),
				solution: translate(
					'Maintain this top-notch responsiveness by regularly optimizing your site for consistent performance.'
				),
				cta: translate( 'Keep layout stable' ),
				url: supportUrl,
			},
			poor: {
				diagnostic: translate(
					"Your site's FID is %(value)s, slower than most. Aim for less than 100ms for better responsiveness.",
					{ args: { value: fidValue } }
				),
				solution: translate(
					"Connect with a Happiness Engineer to optimize FID and improve your site's responsiveness"
				),
				cta: translate( 'Enhance responsiveness' ),
				url: supportUrl,
			},
		},
	};

	const fcp: CopiesProps = {
		title: translate( 'First Contentful Paint (FCP)' ),
		nonWpcom: {
			good: {
				diagnostic: translate(
					"Your site's FCP is %(value)s, providing a fast initial load. Great job on maintaining quick content display!",
					{ args: { value: fcpValue } }
				),
				solution: translate(
					'Migrate to WordPress.com to sustain this speed and further enhance your initial content load times.'
				),
				cta: translate( 'Improve FCP speed' ),
				url: migrateUrl,
			},
			poor: {
				diagnostic: translate(
					"Your site's FCP is %(value)s, slower than average. Aim for under 2s to improve user experience.",
					{
						args: {
							value: fcpValue,
						},
					}
				),
				solution: translate(
					'Migrate to WordPress.com for tools to reduce FCP and speed up content load.'
				),
				cta: translate( 'Boost Content Load' ),
				url: migrateUrl,
			},
		},
		wpcom: {
			good: {
				diagnostic: translate(
					"Your site's FCP is %(value)s, providing a fast initial load. Excellent job maintaining quick content delivery!",
					{ args: { value: fcpValue } }
				),
				solution: translate(
					'Continue optimizing your content delivery to consistently maintain this fast load time and performance.'
				),
				cta: translate( 'Maintain fast responses' ),
				url: supportUrl,
			},
			poor: {
				diagnostic: translate(
					"Your site's FCP is %(value)s, slower than average. Aim for under 2s to improve user experience.",
					{ args: { value: fcpValue } }
				),
				solution: translate(
					'Connect with a Happiness Engineer to reduce FCP and speed up initial content load.'
				),
				cta: translate( 'Speed up content load' ),
				url: supportUrl,
			},
		},
	};

	const lcp: CopiesProps = {
		title: translate( 'Largest Contentful Paint (LCP)' ),
		nonWpcom: {
			good: {
				diagnostic: translate(
					"Your site's LCP is %(value)s, loading main content quickly. Well done on maintaining fast load times!",
					{ args: { value: lcpValue } }
				),
				solution: translate(
					"Migrate to WordPress.com to achieve even faster LCP and enhance your site's overall performance."
				),
				cta: translate( 'Optimize main load' ),
				url: migrateUrl,
			},
			poor: {
				diagnostic: translate(
					"Your site's LCP is %(value)s, slower than typical sites. Aim for under 2.5s for better performance.",
					{
						args: {
							value: lcpValue,
						},
					}
				),
				solution: translate(
					'Migrate to WordPress.com for optimized LCP and faster main content load.'
				),
				cta: translate( 'Improve Main Load' ),
				url: migrateUrl,
			},
		},
		wpcom: {
			good: {
				diagnostic: translate(
					"Your site's LCP is %(value)s, loading main content quickly. Excellent job maintaining fast content display!",
					{ args: { value: lcpValue } }
				),
				solution: translate(
					'Keep optimizing images and elements to consistently maintain swift load times and performance.'
				),
				cta: translate( 'Optimize further' ),
				url: supportUrl,
			},
			poor: {
				diagnostic: translate(
					"Your site's LCP is %(value)s, slower than typical sites. Aim for under 2.5s for better performance.",
					{ args: { value: lcpValue } }
				),
				solution: translate(
					'Connect with a Happiness Engineer to optimize LCP and enhance main content load speed.'
				),
				cta: translate( 'Boost main content load' ),
				url: supportUrl,
			},
		},
	};

	const ttfb: CopiesProps = {
		title: translate( 'Time to First Byte (TTFB)' ),
		nonWpcom: {
			good: {
				diagnostic: translate(
					"Your site's TTFB is %(value)s, offering fast server response. Excellent job on maintaining quick response!",
					{ args: { value: ttfbValue } }
				),
				solution: translate(
					'Migrate to WordPress.com to sustain this speed and further enhance your server response times.'
				),
				cta: translate( 'Enhance server speed' ),
				url: migrateUrl,
			},
			poor: {
				diagnostic: translate(
					"Your site's TTFB is %(value)s, longer than most sites. Aim for less than 600ms for better performance.",
					{
						args: {
							value: ttfbValue,
						},
					}
				),
				solution: translate(
					'Migrate to WordPress.com for faster TTFB and improved server response.'
				),
				cta: translate( 'Enhance server speed' ),
				url: migrateUrl,
			},
		},
		wpcom: {
			good: {
				diagnostic: translate(
					"Your site's TTFB is %(value)s, offering fast server response. Excellent job on maintaining quick server performance!",
					{ args: { value: ttfbValue } }
				),
				solution: translate(
					'Continue monitoring server performance to consistently maintain these quick response times and efficiency.'
				),
				cta: translate( 'Monitor performance' ),
				url: supportUrl,
			},
			poor: {
				diagnostic: translate(
					"Your site's TTFB is %(value)s, longer than most sites. Aim for less than 600ms for better performance.",
					{ args: { value: ttfbValue } }
				),
				solution: translate(
					'Connect with a Happiness Engineer to reduce TTFB and improve server response time'
				),
				cta: translate( 'Enhance Server Response' ),
				url: supportUrl,
			},
		},
	};

	const inp: CopiesProps = {
		title: translate( 'Interaction to Next Paint (INP)' ),
		nonWpcom: {
			good: {
				diagnostic: translate(
					"Your site's INP is %(value)s, providing smooth interactions. Great job on maintaining quick responses!",
					{ args: { value: inpValue } }
				),
				solution: translate(
					"Migrate to WordPress.com to sustain and further enhance your site's interaction speed."
				),
				cta: translate( 'Improve INP speed' ),
				url: migrateUrl,
			},
			poor: {
				diagnostic: translate(
					"Your site's INP is %(value)s, higher than average. Aim for less than 100ms for smoother interactions.",
					{
						args: {
							value: inpValue,
						},
					}
				),
				solution: translate(
					'Migrate to WordPress.com for tools to optimize INP and interaction speed.'
				),
				cta: translate( 'Improve INP speed' ),
				url: migrateUrl,
			},
		},
		wpcom: {
			good: {
				diagnostic: translate(
					"Your site's INP is %(value)s, providing smooth interactions. Excellent performance, keep it up!",
					{ args: { value: inpValue } }
				),
				solution: translate(
					'Keep refining interactive elements to sustain this high level of performance and user satisfaction.'
				),
				cta: translate( 'Refine interactions' ),
				url: supportUrl,
			},
			poor: {
				diagnostic: translate(
					"Your site's INP is %(value)s, higher than average. Aim for less than 100ms for smoother interactions.",
					{ args: { value: inpValue } }
				),
				solution: translate(
					'Connect with a Happiness Engineer to optimize INP and improve interaction speed.'
				),
				cta: translate( 'Improve Interaction Speed' ),
				url: supportUrl,
			},
		},
	};

	return {
		ttfb,
		fcp,
		lcp,
		inp,
		cls,
		fid,
	};
}