/**
 * @license
 * Copyright Google LLC All Rights Reserved.
 *
 * Use of this source code is governed by an MIT-style license that can be
 * found in the LICENSE file at https://angular.io/license
 */
import { RuntimeError } from '../errors';
import { getDeclarationComponentDef } from '../render3/instructions/element_validation';
import { TVIEW } from '../render3/interfaces/view';
import { getParentRElement } from '../render3/node_manipulation';
const AT_THIS_LOCATION = '<-- AT THIS LOCATION';
/**
 * Retrieves a user friendly string for a given TNodeType for use in
 * friendly error messages
 *
 * @param tNodeType
 * @returns
 */
function getFriendlyStringFromTNodeType(tNodeType) {
    switch (tNodeType) {
        case 4 /* TNodeType.Container */:
            return 'view container';
        case 2 /* TNodeType.Element */:
            return 'element';
        case 8 /* TNodeType.ElementContainer */:
            return 'ng-container';
        case 32 /* TNodeType.Icu */:
            return 'icu';
        case 64 /* TNodeType.Placeholder */:
            return 'i18n';
        case 16 /* TNodeType.Projection */:
            return 'projection';
        case 1 /* TNodeType.Text */:
            return 'text';
        default:
            // This should not happen as we cover all possible TNode types above.
            return '<unknown>';
    }
}
/**
 * Validates that provided nodes match during the hydration process.
 */
export function validateMatchingNode(node, nodeType, tagName, lView, tNode, isViewContainerAnchor = false) {
    if (!node ||
        (node.nodeType !== nodeType ||
            (node.nodeType === Node.ELEMENT_NODE &&
                node.tagName.toLowerCase() !== tagName?.toLowerCase()))) {
        const expectedNode = shortRNodeDescription(nodeType, tagName, null);
        let header = `During hydration Angular expected ${expectedNode} but `;
        const hostComponentDef = getDeclarationComponentDef(lView);
        const componentClassName = hostComponentDef?.type?.name;
        const expected = `Angular expected this DOM:\n\n${describeExpectedDom(lView, tNode, isViewContainerAnchor)}\n\n`;
        let actual = '';
        if (!node) {
            // No node found during hydration.
            header += `the node was not found.\n\n`;
        }
        else {
            const actualNode = shortRNodeDescription(node.nodeType, node.tagName ?? null, node.textContent ?? null);
            header += `found ${actualNode}.\n\n`;
            actual = `Actual DOM is:\n\n${describeDomFromNode(node)}\n\n`;
        }
        const footer = getHydrationErrorFooter(componentClassName);
        const message = header + expected + actual + getHydrationAttributeNote() + footer;
        throw new RuntimeError(-500 /* RuntimeErrorCode.HYDRATION_NODE_MISMATCH */, message);
    }
}
/**
 * Validates that a given node has sibling nodes
 */
export function validateSiblingNodeExists(node) {
    validateNodeExists(node);
    if (!node.nextSibling) {
        const header = 'During hydration Angular expected more sibling nodes to be present.\n\n';
        const actual = `Actual DOM is:\n\n${describeDomFromNode(node)}\n\n`;
        const footer = getHydrationErrorFooter();
        const message = header + actual + footer;
        throw new RuntimeError(-501 /* RuntimeErrorCode.HYDRATION_MISSING_SIBLINGS */, message);
    }
}
/**
 * Validates that a node exists or throws
 */
export function validateNodeExists(node, lView = null, tNode = null) {
    if (!node) {
        const header = 'During hydration, Angular expected an element to be present at this location.\n\n';
        let expected = '';
        let footer = '';
        if (lView !== null && tNode !== null) {
            expected = `${describeExpectedDom(lView, tNode, false)}\n\n`;
            footer = getHydrationErrorFooter();
        }
        throw new RuntimeError(-502 /* RuntimeErrorCode.HYDRATION_MISSING_NODE */, header + expected + footer);
    }
}
/**
 * Builds the hydration error message when a node is not found
 *
 * @param lView the LView where the node exists
 * @param tNode the TNode
 */
export function nodeNotFoundError(lView, tNode) {
    const header = 'During serialization, Angular was unable to find an element in the DOM:\n\n';
    const expected = `${describeExpectedDom(lView, tNode, false)}\n\n`;
    const footer = getHydrationErrorFooter();
    throw new RuntimeError(-502 /* RuntimeErrorCode.HYDRATION_MISSING_NODE */, header + expected + footer);
}
/**
 * Builds a hydration error message when a node is not found at a path location
 *
 * @param host the Host Node
 * @param path the path to the node
 */
export function nodeNotFoundAtPathError(host, path) {
    const header = `During hydration Angular was unable to locate a node ` +
        `using the "${path}" path, starting from the ${describeRNode(host)} node.\n\n`;
    const footer = getHydrationErrorFooter();
    throw new RuntimeError(-502 /* RuntimeErrorCode.HYDRATION_MISSING_NODE */, header + footer);
}
/**
 * Builds the hydration error message in the case that dom nodes are created outside of
 * the Angular context and are being used as projected nodes
 *
 * @param lView the LView
 * @param tNode the TNode
 * @returns an error
 */
export function unsupportedProjectionOfDomNodes(rNode) {
    const header = 'During serialization, Angular detected DOM nodes ' +
        'that were created outside of Angular context and provided as projectable nodes ' +
        '(likely via `ViewContainerRef.createComponent` or `createComponent` APIs). ' +
        'Hydration is not supported for such cases, consider refactoring the code to avoid ' +
        'this pattern or using `ngSkipHydration` on the host element of the component.\n\n';
    const actual = `${describeDomFromNode(rNode)}\n\n`;
    const message = header + actual + getHydrationAttributeNote();
    return new RuntimeError(-503 /* RuntimeErrorCode.UNSUPPORTED_PROJECTION_DOM_NODES */, message);
}
/**
 * Builds the hydration error message in the case that ngSkipHydration was used on a
 * node that is not a component host element or host binding
 *
 * @param rNode the HTML Element
 * @returns an error
 */
export function invalidSkipHydrationHost(rNode) {
    const header = 'The `ngSkipHydration` flag is applied on a node ' +
        'that doesn\'t act as a component host. Hydration can be ' +
        'skipped only on per-component basis.\n\n';
    const actual = `${describeDomFromNode(rNode)}\n\n`;
    const footer = 'Please move the `ngSkipHydration` attribute to the component host element.\n\n';
    const message = header + actual + footer;
    return new RuntimeError(-504 /* RuntimeErrorCode.INVALID_SKIP_HYDRATION_HOST */, message);
}
// Stringification methods
/**
 * Stringifies a given TNode's attributes
 *
 * @param tNode a provided TNode
 * @returns string
 */
function stringifyTNodeAttrs(tNode) {
    const results = [];
    if (tNode.attrs) {
        for (let i = 0; i < tNode.attrs.length;) {
            const attrName = tNode.attrs[i++];
            // Once we reach the first flag, we know that the list of
            // attributes is over.
            if (typeof attrName == 'number') {
                break;
            }
            const attrValue = tNode.attrs[i++];
            results.push(`${attrName}="${shorten(attrValue)}"`);
        }
    }
    return results.join(' ');
}
/**
 * The list of internal attributes that should be filtered out while
 * producing an error message.
 */
const internalAttrs = new Set(['ngh', 'ng-version', 'ng-server-context']);
/**
 * Stringifies an HTML Element's attributes
 *
 * @param rNode an HTML Element
 * @returns string
 */
function stringifyRNodeAttrs(rNode) {
    const results = [];
    for (let i = 0; i < rNode.attributes.length; i++) {
        const attr = rNode.attributes[i];
        if (internalAttrs.has(attr.name))
            continue;
        results.push(`${attr.name}="${shorten(attr.value)}"`);
    }
    return results.join(' ');
}
// Methods for Describing the DOM
/**
 * Converts a tNode to a helpful readable string value for use in error messages
 *
 * @param tNode a given TNode
 * @param innerContent the content of the node
 * @returns string
 */
function describeTNode(tNode, innerContent = '…') {
    switch (tNode.type) {
        case 1 /* TNodeType.Text */:
            const content = tNode.value ? `(${tNode.value})` : '';
            return `#text${content}`;
        case 2 /* TNodeType.Element */:
            const attrs = stringifyTNodeAttrs(tNode);
            const tag = tNode.value.toLowerCase();
            return `<${tag}${attrs ? ' ' + attrs : ''}>${innerContent}</${tag}>`;
        case 8 /* TNodeType.ElementContainer */:
            return '<!-- ng-container -->';
        case 4 /* TNodeType.Container */:
            return '<!-- container -->';
        default:
            const typeAsString = getFriendlyStringFromTNodeType(tNode.type);
            return `#node(${typeAsString})`;
    }
}
/**
 * Converts an RNode to a helpful readable string value for use in error messages
 *
 * @param rNode a given RNode
 * @param innerContent the content of the node
 * @returns string
 */
function describeRNode(rNode, innerContent = '…') {
    const node = rNode;
    switch (node.nodeType) {
        case Node.ELEMENT_NODE:
            const tag = node.tagName.toLowerCase();
            const attrs = stringifyRNodeAttrs(node);
            return `<${tag}${attrs ? ' ' + attrs : ''}>${innerContent}</${tag}>`;
        case Node.TEXT_NODE:
            const content = node.textContent ? shorten(node.textContent) : '';
            return `#text${content ? `(${content})` : ''}`;
        case Node.COMMENT_NODE:
            return `<!-- ${shorten(node.textContent ?? '')} -->`;
        default:
            return `#node(${node.nodeType})`;
    }
}
/**
 * Builds the string containing the expected DOM present given the LView and TNode
 * values for a readable error message
 *
 * @param lView the lView containing the DOM
 * @param tNode the tNode
 * @param isViewContainerAnchor boolean
 * @returns string
 */
function describeExpectedDom(lView, tNode, isViewContainerAnchor) {
    const spacer = '  ';
    let content = '';
    if (tNode.prev) {
        content += spacer + '…\n';
        content += spacer + describeTNode(tNode.prev) + '\n';
    }
    else if (tNode.type && tNode.type & 12 /* TNodeType.AnyContainer */) {
        content += spacer + '…\n';
    }
    if (isViewContainerAnchor) {
        content += spacer + describeTNode(tNode) + '\n';
        content += spacer + `<!-- container -->  ${AT_THIS_LOCATION}\n`;
    }
    else {
        content += spacer + describeTNode(tNode) + `  ${AT_THIS_LOCATION}\n`;
    }
    content += spacer + '…\n';
    const parentRNode = tNode.type ? getParentRElement(lView[TVIEW], tNode, lView) : null;
    if (parentRNode) {
        content = describeRNode(parentRNode, '\n' + content);
    }
    return content;
}
/**
 * Builds the string containing the DOM present around a given RNode for a
 * readable error message
 *
 * @param node the RNode
 * @returns string
 */
function describeDomFromNode(node) {
    const spacer = '  ';
    let content = '';
    const currentNode = node;
    if (currentNode.previousSibling) {
        content += spacer + '…\n';
        content += spacer + describeRNode(currentNode.previousSibling) + '\n';
    }
    content += spacer + describeRNode(currentNode) + `  ${AT_THIS_LOCATION}\n`;
    if (node.nextSibling) {
        content += spacer + '…\n';
    }
    if (node.parentNode) {
        content = describeRNode(currentNode.parentNode, '\n' + content);
    }
    return content;
}
/**
 * Shortens the description of a given RNode by its type for readability
 *
 * @param nodeType the type of node
 * @param tagName the node tag name
 * @param textContent the text content in the node
 * @returns string
 */
function shortRNodeDescription(nodeType, tagName, textContent) {
    switch (nodeType) {
        case Node.ELEMENT_NODE:
            return `<${tagName.toLowerCase()}>`;
        case Node.TEXT_NODE:
            const content = textContent ? ` (with the "${shorten(textContent)}" content)` : '';
            return `a text node${content}`;
        case Node.COMMENT_NODE:
            return 'a comment node';
        default:
            return `#node(nodeType=${nodeType})`;
    }
}
/**
 * Builds the footer hydration error message
 *
 * @param componentClassName the name of the component class
 * @returns string
 */
function getHydrationErrorFooter(componentClassName) {
    const componentInfo = componentClassName ? `the "${componentClassName}"` : 'corresponding';
    return `To fix this problem:\n` +
        `  * check ${componentInfo} component for hydration-related issues\n` +
        `  * check to see if your template has valid HTML structure\n` +
        `  * or skip hydration by adding the \`ngSkipHydration\` attribute ` +
        `to its host node in a template\n\n`;
}
/**
 * An attribute related note for hydration errors
 */
function getHydrationAttributeNote() {
    return 'Note: attributes are only displayed to better represent the DOM' +
        ' but have no effect on hydration mismatches.\n\n';
}
// Node string utility functions
/**
 * Strips all newlines out of a given string
 *
 * @param input a string to be cleared of new line characters
 * @returns
 */
function stripNewlines(input) {
    return input.replace(/\s+/gm, '');
}
/**
 * Reduces a string down to a maximum length of characters with ellipsis for readability
 *
 * @param input a string input
 * @param maxLength a maximum length in characters
 * @returns string
 */
function shorten(input, maxLength = 50) {
    if (!input) {
        return '';
    }
    input = stripNewlines(input);
    return input.length > maxLength ? `${input.substring(0, maxLength - 1)}…` : input;
}
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Validates that a given node has sibling nodes\n */\nexport function validateSiblingNodeExists(node: RNode|null): void {\n  validateNodeExists(node);\n  if (!node!.nextSibling) {\n    const header = 'During hydration Angular expected more sibling nodes to be present.\\n\\n';\n    const actual = `Actual DOM is:\\n\\n${describeDomFromNode(node!)}\\n\\n`;\n    const footer = getHydrationErrorFooter();\n\n    const message = header + actual + footer;\n    throw new RuntimeError(RuntimeErrorCode.HYDRATION_MISSING_SIBLINGS, message);\n  }\n}\n\n/**\n * Validates that a node exists or throws\n */\nexport function validateNodeExists(\n    node: RNode|null, lView: LView|null = null, tNode: TNode|null = null): void {\n  if (!node) {\n    const header =\n        'During hydration, Angular expected an element to be present at this location.\\n\\n';\n    let expected = '';\n    let footer = '';\n    if (lView !== null && tNode !== null) {\n      expected = `${describeExpectedDom(lView, tNode, 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Angular was unable to locate a node ` +\n      `using the \"${path}\" path, starting from the ${describeRNode(host)} node.\\n\\n`;\n  const footer = getHydrationErrorFooter();\n\n  throw new RuntimeError(RuntimeErrorCode.HYDRATION_MISSING_NODE, header + footer);\n}\n\n\n/**\n * Builds the hydration error message in the case that dom nodes are created outside of\n * the Angular context and are being used as projected nodes\n *\n * @param lView the LView\n * @param tNode the TNode\n * @returns an error\n */\nexport function unsupportedProjectionOfDomNodes(rNode: RNode): Error {\n  const header = 'During serialization, Angular detected DOM nodes ' +\n      'that were created outside of Angular context and provided as projectable nodes ' +\n      '(likely via `ViewContainerRef.createComponent` or `createComponent` APIs). ' +\n      'Hydration is not supported for such cases, consider refactoring the code to avoid ' +\n      'this pattern or using `ngSkipHydration` on the host element of the component.\\n\\n';\n  const actual = `${describeDomFromNode(rNode)}\\n\\n`;\n  const message = header + actual + getHydrationAttributeNote();\n  return new RuntimeError(RuntimeErrorCode.UNSUPPORTED_PROJECTION_DOM_NODES, message);\n}\n\n/**\n * Builds the hydration error message in the case that ngSkipHydration was used on a\n * node that is not a component host element or host binding\n *\n * @param rNode the HTML Element\n * @returns an error\n */\nexport function invalidSkipHydrationHost(rNode: RNode): Error {\n  const header = 'The `ngSkipHydration` flag is applied on a node ' +\n      'that doesn\\'t act as a component host. Hydration can be ' +\n      'skipped only on per-component basis.\\n\\n';\n  const actual = `${describeDomFromNode(rNode)}\\n\\n`;\n  const footer = 'Please move the `ngSkipHydration` attribute to the component host element.\\n\\n';\n  const message = header + actual + footer;\n  return new RuntimeError(RuntimeErrorCode.INVALID_SKIP_HYDRATION_HOST, message);\n}\n\n// Stringification methods\n\n/**\n * Stringifies a given TNode's attributes\n *\n * @param tNode a provided TNode\n * @returns string\n */\nfunction stringifyTNodeAttrs(tNode: TNode): string {\n  const results = [];\n  if (tNode.attrs) {\n    for (let i = 0; i < tNode.attrs.length;) {\n      const attrName = tNode.attrs[i++];\n      // Once we reach the first flag, we know that the list of\n      // attributes is over.\n      if (typeof attrName == 'number') {\n        break;\n      }\n      const attrValue = tNode.attrs[i++];\n      results.push(`${attrName}=\"${shorten(attrValue as string)}\"`);\n    }\n  }\n  return results.join(' ');\n}\n\n/**\n * The list of internal attributes that should be filtered out while\n * producing an error message.\n */\nconst internalAttrs = new Set(['ngh', 'ng-version', 'ng-server-context']);\n\n/**\n * Stringifies an HTML Element's attributes\n *\n * @param rNode an HTML Element\n * @returns string\n */\nfunction stringifyRNodeAttrs(rNode: HTMLElement): string {\n  const results = [];\n  for (let i = 0; i < rNode.attributes.length; i++) {\n    const attr = rNode.attributes[i];\n    if (internalAttrs.has(attr.name)) continue;\n    results.push(`${attr.name}=\"${shorten(attr.value)}\"`);\n  }\n  return results.join(' ');\n}\n\n// Methods for Describing the DOM\n\n/**\n * Converts a tNode to a helpful readable string value for use in error messages\n *\n * @param tNode a given TNode\n * @param innerContent the content of the node\n * @returns string\n */\nfunction describeTNode(tNode: TNode, innerContent: string = '…'): string {\n  switch (tNode.type) {\n    case TNodeType.Text:\n      const content = tNode.value ? `(${tNode.value})` : '';\n      return `#text${content}`;\n    case TNodeType.Element:\n      const attrs = stringifyTNodeAttrs(tNode);\n      const tag = tNode.value.toLowerCase();\n      return `<${tag}${attrs ? ' ' + attrs : ''}>${innerContent}</${tag}>`;\n    case TNodeType.ElementContainer:\n      return '<!-- ng-container -->';\n    case TNodeType.Container:\n      return '<!-- container -->';\n    default:\n      const typeAsString = getFriendlyStringFromTNodeType(tNode.type);\n      return `#node(${typeAsString})`;\n  }\n}\n\n/**\n * Converts an RNode to a helpful readable string value for use in error messages\n *\n * @param rNode a given RNode\n * @param innerContent the content of the node\n * @returns string\n */\nfunction describeRNode(rNode: RNode, innerContent: string = '…'): string {\n  const node = rNode as HTMLElement;\n  switch (node.nodeType) {\n    case Node.ELEMENT_NODE:\n      const tag = node.tagName!.toLowerCase();\n      const attrs = stringifyRNodeAttrs(node);\n      return `<${tag}${attrs ? ' ' + attrs : ''}>${innerContent}</${tag}>`;\n    case Node.TEXT_NODE:\n      const content = node.textContent ? shorten(node.textContent) : '';\n      return `#text${content ? `(${content})` : ''}`;\n    case Node.COMMENT_NODE:\n      return `<!-- ${shorten(node.textContent ?? '')} -->`;\n    default:\n      return `#node(${node.nodeType})`;\n  }\n}\n\n/**\n * Builds the string containing the expected DOM present given the LView and TNode\n * values for a readable error message\n *\n * @param lView the lView containing the DOM\n * @param tNode the tNode\n * @param isViewContainerAnchor boolean\n * @returns string\n */\nfunction describeExpectedDom(lView: LView, tNode: TNode, isViewContainerAnchor: boolean): string {\n  const spacer = '  ';\n  let content = '';\n  if (tNode.prev) {\n    content += spacer + '…\\n';\n    content += spacer + describeTNode(tNode.prev) + '\\n';\n  } else if (tNode.type && tNode.type & TNodeType.AnyContainer) {\n    content += spacer + '…\\n';\n  }\n  if (isViewContainerAnchor) {\n    content += spacer + describeTNode(tNode) + '\\n';\n    content += spacer + `<!-- container -->  ${AT_THIS_LOCATION}\\n`;\n  } else {\n    content += spacer + describeTNode(tNode) + `  ${AT_THIS_LOCATION}\\n`;\n  }\n  content += spacer + '…\\n';\n\n  const parentRNode = tNode.type ? getParentRElement(lView[TVIEW], tNode, lView) : null;\n  if (parentRNode) {\n    content = describeRNode(parentRNode as unknown as Node, '\\n' + content);\n  }\n  return content;\n}\n\n/**\n * Builds the string containing the DOM present around a given RNode for a\n * readable error message\n *\n * @param node the RNode\n * @returns string\n */\nfunction describeDomFromNode(node: RNode): string {\n  const spacer = '  ';\n  let content = '';\n  const currentNode = node as HTMLElement;\n  if (currentNode.previousSibling) {\n    content += spacer + '…\\n';\n    content += spacer + describeRNode(currentNode.previousSibling) + '\\n';\n  }\n  content += spacer + describeRNode(currentNode) + `  ${AT_THIS_LOCATION}\\n`;\n  if (node.nextSibling) {\n    content += spacer + '…\\n';\n  }\n  if (node.parentNode) {\n    content = describeRNode(currentNode.parentNode as Node, '\\n' + content);\n  }\n  return content;\n}\n\n/**\n * Shortens the description of a given RNode by its type for readability\n *\n * @param nodeType the type of node\n * @param tagName the node tag name\n * @param textContent the text content in the node\n * @returns string\n */\nfunction shortRNodeDescription(\n    nodeType: number, tagName: string|null, textContent: string|null): string {\n  switch (nodeType) {\n    case Node.ELEMENT_NODE:\n      return `<${tagName!.toLowerCase()}>`;\n    case Node.TEXT_NODE:\n      const content = textContent ? ` (with the \"${shorten(textContent)}\" content)` : '';\n      return `a text node${content}`;\n    case Node.COMMENT_NODE:\n      return 'a comment node';\n    default:\n      return `#node(nodeType=${nodeType})`;\n  }\n}\n\n\n/**\n * Builds the footer hydration error message\n *\n * @param componentClassName the name of the component class\n * @returns string\n */\nfunction getHydrationErrorFooter(componentClassName?: string): string {\n  const componentInfo = componentClassName ? `the \"${componentClassName}\"` : 'corresponding';\n  return `To fix this problem:\\n` +\n      `  * check ${componentInfo} component for hydration-related issues\\n` +\n      `  * check to see if your template has valid HTML structure\\n` +\n      `  * or skip hydration by adding the \\`ngSkipHydration\\` attribute ` +\n      `to its host node in a template\\n\\n`;\n}\n\n/**\n * An attribute related note for hydration errors\n */\nfunction getHydrationAttributeNote(): string {\n  return 'Note: attributes are only displayed to better represent the DOM' +\n      ' but have no effect on hydration mismatches.\\n\\n';\n}\n\n// Node string utility functions\n\n/**\n * Strips all newlines out of a given string\n *\n * @param input a string to be cleared of new line characters\n * @returns\n */\nfunction stripNewlines(input: string): string {\n  return input.replace(/\\s+/gm, '');\n}\n\n/**\n * Reduces a string down to a maximum length of characters with ellipsis for readability\n *\n * @param input a string input\n * @param maxLength a maximum length in characters\n * @returns string\n */\nfunction shorten(input: string|null, maxLength = 50): string {\n  if (!input) {\n    return '';\n  }\n  input = stripNewlines(input);\n  return input.length > maxLength ? `${input.substring(0, maxLength - 1)}…` : input;\n}\n"]}