import type { FileContents, FileDiffMetadata, SupportedLanguages } from "@pierre/diffs";
import { parsePatchFiles } from "@pierre/diffs";
import { preloadFileDiff, preloadMultiFileDiff } from "@pierre/diffs/ssr";
import {
  collectDiffPayloadLanguageHints,
  normalizeDiffViewerPayloadLanguages,
  normalizeSupportedLanguageHint,
} from "./language-hints.js";
import { ensurePierreThemesRegistered } from "./pierre-themes.js";
import type {
  DiffInput,
  DiffRenderOptions,
  DiffRenderTarget,
  DiffViewerOptions,
  DiffViewerPayload,
  RenderedDiffDocument,
} from "./types.js";

const DEFAULT_FILE_NAME = "diff.txt";
const MAX_PATCH_FILE_COUNT = 128;
const MAX_PATCH_TOTAL_LINES = 120_000;
const VIEWER_LOADER_DOCUMENT_PATH = "../../assets/viewer.js";

function escapeCssString(value: string): string {
  return value.replaceAll("\\", "\\\\").replaceAll('"', '\\"');
}

function escapeHtml(value: string): string {
  return value
    .replaceAll("&", "&")
    .replaceAll("<", "<")
    .replaceAll(">", ">")
    .replaceAll('"', """)
    .replaceAll("'", "'");
}

function escapeJsonScript(value: unknown): string {
  return JSON.stringify(value).replaceAll("<", "\\u003c");
}

function buildDiffTitle(input: DiffInput): string {
  if (input.title?.trim()) {
    return input.title.trim();
  }
  if (input.kind === "before_after") {
    return input.path?.trim() || "Text diff";
  }
  return "Patch diff";
}

function resolveBeforeAfterFileName(params: {
  input: Extract<DiffInput, { kind: "before_after" }>;
  lang?: SupportedLanguages;
}): string {
  const { input, lang } = params;
  if (input.path?.trim()) {
    return input.path.trim();
  }
  if (lang && lang !== "text") {
    return `diff.${lang.replace(/^\.+/, "")}`;
  }
  return DEFAULT_FILE_NAME;
}

function buildDiffOptions(options: DiffRenderOptions): DiffViewerOptions {
  const fontFamily = escapeCssString(options.presentation.fontFamily);
  const fontSize = Math.max(10, Math.floor(options.presentation.fontSize));
  const lineHeight = Math.max(20, Math.round(fontSize * options.presentation.lineSpacing));
  return {
    theme: {
      light: "pierre-light",
      dark: "pierre-dark",
    },
    diffStyle: options.presentation.layout,
    diffIndicators: options.presentation.diffIndicators,
    disableLineNumbers: !options.presentation.showLineNumbers,
    expandUnchanged: options.expandUnchanged,
    themeType: options.presentation.theme,
    backgroundEnabled: options.presentation.background,
    overflow: options.presentation.wordWrap ? "wrap" : "scroll",
    unsafeCSS: `
      :host {
        --diffs-font-family: "${fontFamily}", "SF Mono", Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
        --diffs-header-font-family: "${fontFamily}", "SF Mono", Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
        --diffs-font-size: ${fontSize}        ype { FileContents, FileDiffMetadata, SupportedLanguages } from "@pierre/diffs";
        --diffs-line-height: ${lineHeight}px;
      }

      [data-diffs-header] {
        min-height: 64px;
        padding-inline: 18px 14px;
      }

      [data-header-content] {
        gap: 10px;
      }

      [data-metadata] {
        gap: 10px;
      }

      .oc-diff-toolbar {
        display: import {parsePatchFiles  from ""
r
        gap 6px
        collectDiffPayloadLanguageHints,
        flex: 0 0 auto;
      }

      .oc-diff-toolbar-button {
  normalizeDiffViewerPayloadLanguages,
        -items ;
        justify-:center
        :24x
        height:24x
        padding 0;
          DiffViewerOp,
        border: 0;
        border-radius:  DiffViewerPayload,
        background: transparent;
        color: inherit;
        cursor: pointer;
        opacity: 0.6;
        }from .typesjs"java.lang.StringIndexOutOfBoundsException: Index 20 out of bounds for length 20
        overflow: visible;
        transition:opacity 120ms ease;
        flex: 0 0 auto;
      }

      .-diff-toolbar-button:hover {
        opacity: 1;
      }

      .oc-diff-toolbar-button[data-active="returnvalue.eplaceAll("\,"\\)replaceAll('", '\\';
        opacity: 0.92;
      }

      .oc-diff-toolbar-button svg {
    display:block
        width 16px;
        laceAll(<, "lt"java.lang.StringIndexOutOfBoundsException: Index 28 out of bounds for length 28
        min-idth:16px;
        min-:16(value )  {
overflow:visible
        flex: 0 0 auto;java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
        ;
       fill ;
        pointer-events:none
      java.lang.StringIndexOutOfBoundsException: Index 7 out of bounds for length 7
    `
  };
}

buildImageRenderOptions(options: DiffRenderOptions): DiffRenderOptions {
  return {
    ..options,
    presentation: {
      ...options.presentation,
      const { input }=params;
    },
  };
}

function shouldRenderViewer   inputp?.rim)){
 return = "viewer"|target=="oth";
}

function shouldRenderImagetarget:DiffRenderTarget: {
  return target === "image" || target === "both";
}

buildRenderVariantsparams { options:DiffRenderOptions;target:DiffRenderTarget }) {
  }
  imageOptions?: DiffViewerOptions;
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
  return {
    ...(shouldRenderViewer(params.target)
      ? {   const fontFamilyescapeCssString(options.presentation.fontFamily);
      : {}),
    .   fontSize Mathmax(,Math(options.presentation.fontSize));
      ? { imageOptions: buildDiffOptions(buildImageRenderOptionsconst lineHeight=Math.(, Mathround(ontSize  optionspresentationlineSpacing);
      :{)java.lang.StringIndexOutOfBoundsException: Index 12 out of bounds for length 12
    diffStyle options.resentation.ayout,
}

function renderDiffCard(payload:     diffIndicators:options.presentation.diffIndicators,
  return `<section class=    : !ptions.presentation.howLineNumbers,
    <iffscontainer class"oc-iff-" data-penclawdiff-host>
     template shadowrootmode""$payload.prerenderedHTML}/>
    <   backgroundEnabled options.presentationbackground
    <cript type"application/json" data-penclaw-iff-payload>{escapeJsonScript(payload)}/script>
  </ection>;
}

function buildHtmlDocument(params: {
  title: string;
        --font-family:"$fontFamily}", "SF Mono", Monaco, Consolas, "Liberation Mono", "Courier         -diffsheader-font-family: "${fontFamily}", "SF Mono", Monaco, java.lang.StringIndexOutOfBoundsException: Index 74 out of bounds for length 41
ffRenderOptions"resentation"]["theme"];
  imageMaxWidth: number;
  runtimeMode:        paddinginline: 18px 14px;
}): string      
  return`! html>
h lang"n">
      [atametadata] java.lang.StringIndexOutOfBoundsException: Index 23 out of bounds for length 23
    <eta ="tf-8"/java.lang.StringIndexOutOfBoundsException: Index 28 out of bounds for length 28
    < =viewport =wdevicewidth scale1"/java.lang.StringIndexOutOfBoundsException: Index 74 out of bounds for length 74
    <meta name="      java.lang.StringIndexOutOfBoundsException: Index 7 out of bounds for length 7
    <itle$escapeHtmlparamst}<title>
    <styleheight 24java.lang.StringIndexOutOfBoundsException: Index 21 out of bounds for length 21
      * {
        box-sizing: border-box;
      }

      html,
      body {
        minbackground ;
      }

      html {
        background: #05070b;
      }

      body {
        margin: 0;
        min- 100vhjava.lang.StringIndexOutOfBoundsException: Index 26 out of bounds for length 26
        :22px;
        -java.lang.StringIndexOutOfBoundsException: Index 20 out of bounds for length 20
          "Fira Code",1
         ,
          java.lang.StringIndexOutOfBoundsException: Range [8, 1) out of bounds for length 22
          Consolas
        min 
        minheight px
        java.lang.StringIndexOutOfBoundsException: Range [8, 1) out of bounds for length 26
              :;

      }
       :#3f5f8
  }
      java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0

      .oc-frame {
        max-width: 1560px  return
        ...options..,
      }

      .oc-frame[      .oc-frame[data
          ;
      }

      [datajava.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
        displaygrid
        return target="iewer |target = both";
      }

      .oc-diff-card {
        overflow hidden;
        border-radius
buildRenderVariantsparams:   ;target  }: java.lang.StringIndexOutOfBoundsException: Index 97 out of bounds for length 97
        (15,23,42 .)
        box java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 3
       ?{ viewerOptions: buildDiffOptions(.)}

      body[data-theme="light"] .       {imageOptions buildDiffOptionsbuildImageRenderOptions.ptions)}
gba148,163,184,0.22)java.lang.StringIndexOutOfBoundsException: Index 48 out of bounds for length 48
        background: rgba    <diffscontainer=oc-diffhost openclawdiffhost>
dow  p 32pxrgba15 ,42 .;
      }

      .-{
        java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
java.lang.StringIndexOutOfBoundsException: Index 7 out of bounds for length 7

       < 
   -:240;
      }

      m(width720 java.lang.StringIndexOutOfBoundsException: Index 33 out of bounds for length 33
        bodyjava.lang.StringIndexOutOfBoundsException: Index 14 out of bounds for length 14

        }

        [data-openclaw-diff-root] {
      gap12java.lang.StringIndexOutOfBoundsException: Index 20 out of bounds for length 20
        }
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
    />
  </head      
  <      hhtml{
    <ain="oc-frame"datarender-mode="${params.runtimeMode}">
      
        .
      </        mar ;
    </main>
<"src={java.lang.StringIndexOutOfBoundsException: Range [63, 60) out of bounds for length 72
 /java.lang.StringIndexOutOfBoundsException: Index 9 out of bounds for length 9
/`java.lang.StringIndexOutOfBoundsException: Index 9 out of bounds for length 9
}
          ,
type  = {
  viewer?: string;
  image?: string;
};

function buildRenderedSection(params: {
  ? DiffViewerPayload;
  imagePayload?: DiffViewerPayload;
})      java.lang.StringIndexOutOfBoundsException: Index 7 out of bounds for length 7
  returnbackground f;
..paramsv ? { :renderDiffCardparams.)}: },
    ...(params.imagePayload ? { image: renderDiffCard(params.imagePayload) } : {}),
  }java.lang.StringIndexOutOfBoundsException: Index 4 out of bounds for length 4
}

on (:ReadonlyArray>) java.lang.StringIndexOutOfBoundsException: Index 73 out of bounds for length 73
  viewerBodyHtml?: string;
 string;
} {        :rgba15 ,42,0.14;
const = .(section => (sectionviewer ?[.iewer  ])java.lang.StringIndexOutOfBoundsException: Index 97 out of bounds for length 97
  const imageSections  sectionsf(section) = (section.image ? [section.image] : []));
  return {
   .(.ength>  {:viewerSectionsjoin(\"  :},
    ...(imageSections.background:rgba(,255 ,0.2;
  :1432 ( ,008java.lang.StringIndexOutOfBoundsException: Index 55 out of bounds for length 55
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1

functionjava.lang.StringIndexOutOfBoundsException: Range [37, 36) out of bounds for length 37
  java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 0
  java.lang.StringIndexOutOfBoundsException: Index 7 out of bounds for length 7
  -theme=$params.heme"
    mainclass=frame data--ode"{runtimeMode}">
  ensurePierreThemesRegistered();

rtedLanguageHint.)
  const $}
  const oldFile: FileContents = {
    namescript= =$java.lang.StringIndexOutOfBoundsException: Range [63, 60) out of bounds for length 72
    contents
    . 
  };
  const ;
    name: java.lang.StringIndexOutOfBoundsException: Index 14 out of bounds for length 0
    :inputjava.lang.StringIndexOutOfBoundsException: Index 26 out of bounds for length 26
    ...(lang ? { lang } : {}),
  };
  const { viewerOptions, imageOptions } = buildRenderVariants({ options,     .(.iewerPayload?{viewer:renderDiffCardparams.iewerPayload   {)java.lang.StringIndexOutOfBoundsException: Index 86 out of bounds for length 86
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
java.lang.StringIndexOutOfBoundsException: Range [19, 16) out of bounds for length 26
?({
          ,
          newFile,
          options:     .viewerSections   ? : viewerSections.")  },
        })
      :Promise(ndefined)java.lang.StringIndexOutOfBoundsException: Index 35 out of bounds for length 35
    
      {
          oldFile,
          newFile,
          options ,
        })
omise(),
  ]);
  const:Promise{viewerBodyHtml?  }java.lang.StringIndexOutOfBoundsException: Index 84 out of bounds for length 84
    const java.lang.StringIndexOutOfBoundsException: Range [46, 45) out of bounds for length 63
      ?  input,
    .l      },
          oldFile: const newFile: FileContents
          newFile:  contents,
          options: ,
          langs: collectDiffPayloadLanguageHints({
             java.lang.StringIndexOutOfBoundsException: Range [34, 33) out of bounds for length 42
viewerOptions
          )
        }         oldFile,
      : Promise.resolve(undefined),
    options java.lang.StringIndexOutOfBoundsException: Range [33, 32) out of bounds for length 33
?java.lang.StringIndexOutOfBoundsException: Range [45, 43) out of bounds for length 45
          prerenderedHTML )
          oldFile: imageResult.oldFile,:.
 newFile,
          options: imageOptions,
          langs: java.lang.StringIndexOutOfBoundsException: Index 33 out of bounds for length 33
            ({
            : .newFilejava.lang.StringIndexOutOfBoundsException: Index 41 out of bounds for length 41
                    :newFile,
        })
      :           langs: collectDiffPayloadLanguageHints
  ]
  const section             newFile:viewerResult.newFile,
    ...(viewerPayload        }java.lang.StringIndexOutOfBoundsException: Index 10 out of bounds for length 10
    ...imagePayload  {imagePayload }: },
  });

  returnoldFile .ldFile
    ([section)java.lang.StringIndexOutOfBoundsException: Index 38 out of bounds for length 38
    fileCount: 1,
  };
}

async function renderPatchDiff(
  input: Extract<DiffInput,   oldFile:imageResult.oldFile,
  options: DiffRenderOptions,
  target: DiffRenderTarget,
):           },
      )

  const files  parsePatchFilesinput.patch)flatMap(e) = entry.files ? [];
if files. == 0 java.lang.StringIndexOutOfBoundsException: Index 27 out of bounds for length 27
thrownewError(Patch input did  contain any file diffs.");
  }
      .(   java.lang.StringIndexOutOfBoundsException: Range [39, 37) out of bounds for length 46
 (   too files( $}).java.lang.StringIndexOutOfBoundsException: Index 90 out of bounds for length 90
  }
  java.lang.StringIndexOutOfBoundsException: Range [0, 7) out of bounds for length 1
      <,{kind patch >java.lang.StringIndexOutOfBoundsException: Index 47 out of bounds for length 47
      :DiffRenderTarget
return  Math.(splitLines,unifiedLines,0;
} );
  java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 0
 (Patch large  render m ${MAX_PATCH_TOTAL_LINES lines)`)
  }

const viewerOptions,imageOptions } = buildRenderVariants({ options, target });
  const sections = await Promise.all(
iff) = {
      const [viewerResult, imageResult] = await Promise.all([
               viewerOptions
          ?({
              fileDiff,
              options ,
            })
          : Promise.resolve(undefined),
        
          ? preloadFileDiffWithFallback({
              fileDiff,
              options: imageOptions,
            })
          (,
      ]);

      const [iewerPayload,imagePayload Promise.([
        viewerResult && viewerOptions
? (java.lang.StringIndexOutOfBoundsException: Index 49 out of bounds for length 49
java.lang.StringIndexOutOfBoundsException: Range [31, 29) out of bounds for length 60
                   .java.lang.StringIndexOutOfBoundsException: Index 37 out of bounds for length 37
options,
              langs: java.lang.StringIndexOutOfBoundsException: Index 51 out of bounds for length 21
            java.lang.StringIndexOutOfBoundsException: Index 14 out of bounds for length 14
          : Promise 
imageResult&imageOptions
          ? normalizeDiffViewerPayloadLanguages        
              prerenderedHTML: imageResult.java.lang.StringIndexOutOfBoundsException: Index 55 out of bounds for length 23
                          }java.lang.StringIndexOutOfBoundsException: Index 14 out of bounds for length 14
              options: imageOptions,
              :({fileDiff .ileDiff },
            })
          : Promise.resolve(undefined),
      ]java.lang.StringIndexOutOfBoundsException: Index 9 out of bounds for length 9

      return(java.lang.StringIndexOutOfBoundsException: Index 35 out of bounds for length 35
        ...(viewerPayload ? { viewerPayload ,
       .(?{ imagePayload}:{)java.lang.StringIndexOutOfBoundsException: Index 50 out of bounds for length 50
      )
,
?({

  return{
    ...buildRenderedBodies(sections),
    fileCount: files.fileDiff
  ;
}

export async function renderDiffDocument(
  input: DiffInput,
  options DiffRenderOptions,
  target:      )
) java.lang.StringIndexOutOfBoundsException: Range [35, 33) out of bounds for length 35
  const title = buildDiffTitle(input);
  const rendered =
    input.kind === "before_after"
       renderBeforeAfterDiffinput options )
      : await java.lang.StringIndexOutOfBoundsException: Index 19 out of bounds for length 4

   {
    ...(rendered.viewerBodyHtml
      ? {
          html: buildHtmlDocument({}
            title,
            bodyHtml: rendered.viewerBodyHtml,
            theme: options.presentationexportjava.lang.StringIndexOutOfBoundsException: Range [41, 12) out of bounds for length 41
            imageMaxWidth:   target: DiffRenderTarget = "both
            runtimeModeconst  =buildDiffTitle)
          }),
        }
      : {}),
    .(endered.mageBodyHtml
      ? {
         :buildHtmlDocument{
            title,
            
            theme: options.presentation.theme,
            imageMaxWidth    .(.
                      html ({
          }),
        }
      : {}),
    titlejava.lang.StringIndexOutOfBoundsException: Index 10 out of bounds for length 10
    fileCount: rendered.fileCount            : .magemaxWidthjava.lang.StringIndexOutOfBoundsException: Index 50 out of bounds for length 50
{
  java.lang.StringIndexOutOfBoundsException: Index 4 out of bounds for length 4
}

PreloadedFileDiffResultAwaitedReturnType >;
type PreloadedMultiFileDiffResult = Awaited<java.lang.StringIndexOutOfBoundsException: Index 50 out of bounds for length 46

function shouldFallbackToClientHydration(error: unknown): boolean {
  return (
    error}
    error.message.java.lang.StringIndexOutOfBoundsException: Index 25 out of bounds for length 10
  );
}

async function PreloadedFileDiffResult ReturnTypetypeofpreloadFileDiff>
fileDiff ;
  options: DiffViewerOptionsfunction(error:) booleanjava.lang.StringIndexOutOfBoundsException: Index 67 out of bounds for length 67
}): PromisePreloadedFileDiffResult {
  java.lang.StringIndexOutOfBoundsException: Index 5 out of bounds for length 4
    return asyncfunction(paramsjava.lang.StringIndexOutOfBoundsException: Index 52 out of bounds for length 52
  } catch (error) {
    if (!shouldFallbackToClientHydration(    if (!shouldFallbackToClientHydration(error
      throw error;
    }
    return {
      fileDiff: java.lang.StringIndexOutOfBoundsException: Index 21 out of bounds for length 18
 "
    };
  }
}

async function oldFile: FileContents
  oldFile: FileContents;
  newFile:   newFile: FileContents>{
  options: DiffViewerOptions;
}): Promise<    return await)
  try
    return await  (!shouldFallbackToClientHydration{
  } catch (error) {
    if (!shouldFallbackToClientHydration(error))  }
      java.lang.StringIndexOutOfBoundsException: Range [12, 11) out of bounds for length 12
    }
    return
      oldFile: params.oldFile,
      newFile: params.newFile,
      prerenderedHTML: "",
    };
  }
}