'use strict';

var _declaredScope = require('eslint-module-utils/declaredScope');

var _declaredScope2 = _interopRequireDefault(_declaredScope);

var _ExportMap = require('../ExportMap');

var _ExportMap2 = _interopRequireDefault(_ExportMap);

var _docsUrl = require('../docsUrl');

var _docsUrl2 = _interopRequireDefault(_docsUrl);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

function message(deprecation) {
  return 'Deprecated' + (deprecation.description ? ': ' + deprecation.description : '.');
}

function getDeprecation(metadata) {
  if (!metadata || !metadata.doc) return;

  let deprecation;
  if (metadata.doc.tags.some(t => t.title === 'deprecated' && (deprecation = t))) {
    return deprecation;
  }
}

module.exports = {
  meta: {
    type: 'suggestion',
    docs: {
      url: (0, _docsUrl2.default)('no-deprecated')
    }
  },

  create: function (context) {
    const deprecated = new Map(),
          namespaces = new Map();

    function checkSpecifiers(node) {
      if (node.type !== 'ImportDeclaration') return;
      if (node.source == null) return; // local export, ignore

      const imports = _ExportMap2.default.get(node.source.value, context);
      if (imports == null) return;

      let moduleDeprecation;
      if (imports.doc && imports.doc.tags.some(t => t.title === 'deprecated' && (moduleDeprecation = t))) {
        context.report({ node, message: message(moduleDeprecation) });
      }

      if (imports.errors.length) {
        imports.reportErrors(context, node);
        return;
      }

      node.specifiers.forEach(function (im) {
        let imported, local;
        switch (im.type) {

          case 'ImportNamespaceSpecifier':
            {
              if (!imports.size) return;
              namespaces.set(im.local.name, imports);
              return;
            }

          case 'ImportDefaultSpecifier':
            imported = 'default';
            local = im.local.name;
            break;

          case 'ImportSpecifier':
            imported = im.imported.name;
            local = im.local.name;
            break;

          default:
            return; // can't handle this one
        }

        // unknown thing can't be deprecated
        const exported = imports.get(imported);
        if (exported == null) return;

        // capture import of deep namespace
        if (exported.namespace) namespaces.set(local, exported.namespace);

        const deprecation = getDeprecation(imports.get(imported));
        if (!deprecation) return;

        context.report({ node: im, message: message(deprecation) });

        deprecated.set(local, deprecation);
      });
    }

    return {
      'Program': (_ref) => {
        let body = _ref.body;
        return body.forEach(checkSpecifiers);
      },

      'Identifier': function (node) {
        if (node.parent.type === 'MemberExpression' && node.parent.property === node) {
          return; // handled by MemberExpression
        }

        // ignore specifier identifiers
        if (node.parent.type.slice(0, 6) === 'Import') return;

        if (!deprecated.has(node.name)) return;

        if ((0, _declaredScope2.default)(context, node.name) !== 'module') return;
        context.report({
          node,
          message: message(deprecated.get(node.name))
        });
      },

      'MemberExpression': function (dereference) {
        if (dereference.object.type !== 'Identifier') return;
        if (!namespaces.has(dereference.object.name)) return;

        if ((0, _declaredScope2.default)(context, dereference.object.name) !== 'module') return;

        // go deep
        var namespace = namespaces.get(dereference.object.name);
        var namepath = [dereference.object.name];
        // while property is namespace and parent is member expression, keep validating
        while (namespace instanceof _ExportMap2.default && dereference.type === 'MemberExpression') {

          // ignore computed parts for now
          if (dereference.computed) return;

          const metadata = namespace.get(dereference.property.name);

          if (!metadata) break;
          const deprecation = getDeprecation(metadata);

          if (deprecation) {
            context.report({ node: dereference.property, message: message(deprecation) });
          }

          // stash and pop
          namepath.push(dereference.property.name);
          namespace = metadata.namespace;
          dereference = dereference.parent;
        }
      }
    };
  }
};
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': ' + deprecation.description : '.')\n}\n\nfunction getDeprecation(metadata) {\n  if (!metadata || !metadata.doc) return\n\n  let deprecation\n  if (metadata.doc.tags.some(t => t.title === 'deprecated' && (deprecation = t))) {\n    return deprecation\n  }\n}\n\nmodule.exports = {\n  meta: {\n    type: 'suggestion',\n    docs: {\n      url: docsUrl('no-deprecated'),\n    },\n  },\n\n  create: function (context) {\n    const deprecated = new Map()\n        , namespaces = new Map()\n\n    function checkSpecifiers(node) {\n      if (node.type !== 'ImportDeclaration') return\n      if (node.source == null) return // local export, ignore\n\n      const imports = Exports.get(node.source.value, context)\n      if (imports == null) return\n\n      let moduleDeprecation\n      if (imports.doc &&\n          imports.doc.tags.some(t => t.title === 'deprecated' && (moduleDeprecation = t))) {\n        context.report({ node, message: message(moduleDeprecation) })\n      }\n\n      if (imports.errors.length) {\n        imports.reportErrors(context, node)\n        return\n      }\n\n      node.specifiers.forEach(function (im) {\n        let imported, local\n        switch (im.type) {\n\n\n          case 'ImportNamespaceSpecifier':{\n            if (!imports.size) return\n            namespaces.set(im.local.name, imports)\n            return\n          }\n\n          case 'ImportDefaultSpecifier':\n            imported = 'default'\n            local = im.local.name\n            break\n\n          case 'ImportSpecifier':\n            imported = im.imported.name\n            local = im.local.name\n            break\n\n          default: return // can't handle this one\n        }\n\n        // unknown thing can't be deprecated\n        const exported = imports.get(imported)\n        if (exported == null) return\n\n        // capture import of deep namespace\n        if (exported.namespace) namespaces.set(local, exported.namespace)\n\n        const deprecation = getDeprecation(imports.get(imported))\n        if (!deprecation) return\n\n        context.report({ node: im, message: message(deprecation) })\n\n        deprecated.set(local, deprecation)\n\n      })\n    }\n\n    return {\n      'Program': ({ body }) => body.forEach(checkSpecifiers),\n\n      'Identifier': function (node) {\n        if (node.parent.type === 'MemberExpression' && node.parent.property === node) {\n          return // handled by MemberExpression\n        }\n\n        // ignore specifier identifiers\n        if (node.parent.type.slice(0, 6) === 'Import') return\n\n        if (!deprecated.has(node.name)) return\n\n        if (declaredScope(context, node.name) !== 'module') return\n        context.report({\n          node,\n          message: message(deprecated.get(node.name)),\n        })\n      },\n\n      'MemberExpression': function (dereference) {\n        if (dereference.object.type !== 'Identifier') return\n        if (!namespaces.has(dereference.object.name)) return\n\n        if (declaredScope(context, dereference.object.name) !== 'module') return\n\n        // go deep\n        var namespace = namespaces.get(dereference.object.name)\n        var namepath = [dereference.object.name]\n        // while property is namespace and parent is member expression, keep validating\n        while (namespace instanceof Exports &&\n               dereference.type === 'MemberExpression') {\n\n          // ignore computed parts for now\n          if (dereference.computed) return\n\n          const metadata = namespace.get(dereference.property.name)\n\n          if (!metadata) break\n          const deprecation = getDeprecation(metadata)\n\n          if (deprecation) {\n            context.report({ node: dereference.property, message: message(deprecation) })\n          }\n\n          // stash and pop\n          namepath.push(dereference.property.name)\n          namespace = metadata.namespace\n          dereference = dereference.parent\n        }\n      },\n    }\n  },\n}\n"]}