|
| 1 | +using System; |
| 2 | +using System.Collections.Generic; |
| 3 | +using System.Linq; |
| 4 | +using System.Threading.Tasks; |
| 5 | +using GraphQL; |
| 6 | +using GraphQL.Language.AST; |
| 7 | +using GraphQL.Types; |
| 8 | +using Our.Umbraco.GraphQL.Filters; |
| 9 | + |
| 10 | +namespace Our.Umbraco.GraphQL.Types |
| 11 | +{ |
| 12 | + public class FilterGraphType<T> : InputObjectGraphType where T : GraphType |
| 13 | + { |
| 14 | + public FilterGraphType(IComplexGraphType graphType) |
| 15 | + { |
| 16 | + Type = typeof(T); |
| 17 | + Name = $"{Type.GraphQLName()}Filter"; |
| 18 | + |
| 19 | + AddFilterField( |
| 20 | + new ListGraphType(new NonNullGraphType(this)), |
| 21 | + graphType, |
| 22 | + "AND", |
| 23 | + $"Combines all passed `{Name}` objects with logical AND", |
| 24 | + subFilters => new AndFilter(subFilters) |
| 25 | + ); |
| 26 | + |
| 27 | + AddFilterField( |
| 28 | + new ListGraphType(new NonNullGraphType(this)), |
| 29 | + graphType, |
| 30 | + "OR", |
| 31 | + $"Combines all passed `{Name}` objects with logical OR", |
| 32 | + subFilters => new OrFilter(subFilters) |
| 33 | + ); |
| 34 | + |
| 35 | + foreach (var field in graphType.Fields) |
| 36 | + { |
| 37 | + if (field.GetMetadata("disableFiltering", false)) |
| 38 | + { |
| 39 | + continue; |
| 40 | + } |
| 41 | + |
| 42 | + FilterField(graphType, field); |
| 43 | + } |
| 44 | + |
| 45 | + // relation |
| 46 | + // _every |
| 47 | + // _some |
| 48 | + // _none |
| 49 | + } |
| 50 | + |
| 51 | + public void FilterField(IGraphType sourceType, FieldType fieldType) |
| 52 | + { |
| 53 | + var namedType = fieldType.Type.GetNamedType(); |
| 54 | + var graphType = new Lazy<IGraphType>(() => namedType.BuildNamedType()); |
| 55 | + |
| 56 | + if (namedType == typeof(EnumerationGraphType) || |
| 57 | + namedType.IsGenericType && namedType.GetGenericTypeDefinition() == typeof(EnumerationGraphType<>) || |
| 58 | + namedType == typeof(BooleanGraphType) || |
| 59 | + namedType == typeof(IntGraphType) || |
| 60 | + namedType == typeof(FloatGraphType) || |
| 61 | + namedType == typeof(DateGraphType) || |
| 62 | + namedType == typeof(StringGraphType) || |
| 63 | + namedType == typeof(IdGraphType)) |
| 64 | + { |
| 65 | + AddFilterField( |
| 66 | + graphType.Value, |
| 67 | + fieldType, |
| 68 | + sourceType, |
| 69 | + fieldType.Name, |
| 70 | + "matches all nodes with exact value", |
| 71 | + (resolver, source) => new EqFilter(resolver, source) |
| 72 | + ); |
| 73 | + |
| 74 | + AddFilterField( |
| 75 | + graphType.Value, |
| 76 | + fieldType, |
| 77 | + sourceType, |
| 78 | + $"{fieldType.Name}_not", |
| 79 | + "matches all nodes with different value", |
| 80 | + (resolver, source) => new NotFilter(new EqFilter(resolver, source)) |
| 81 | + ); |
| 82 | + } |
| 83 | + |
| 84 | + if (namedType == typeof(EnumerationGraphType) || |
| 85 | + namedType.IsGenericType && namedType.GetGenericTypeDefinition() == typeof(EnumerationGraphType<>) || |
| 86 | + namedType == typeof(IntGraphType) || |
| 87 | + namedType == typeof(FloatGraphType) || |
| 88 | + namedType == typeof(DateGraphType) || |
| 89 | + namedType == typeof(StringGraphType) || |
| 90 | + namedType == typeof(IdGraphType)) |
| 91 | + { |
| 92 | + AddFilterField( |
| 93 | + typeof(ListGraphType<>).MakeGenericType(typeof(NonNullGraphType<>).MakeGenericType(namedType)).BuildNamedType(), |
| 94 | + fieldType, |
| 95 | + sourceType, |
| 96 | + $"{fieldType.Name}_in", |
| 97 | + "matches all nodes with value in the passed list", |
| 98 | + (resolver, source) => new InFilter(resolver, source) |
| 99 | + ); |
| 100 | + |
| 101 | + AddFilterField( |
| 102 | + typeof(ListGraphType<>).MakeGenericType(typeof(NonNullGraphType<>).MakeGenericType(namedType)).BuildNamedType(), |
| 103 | + fieldType, |
| 104 | + sourceType, |
| 105 | + $"{fieldType.Name}_not_in", |
| 106 | + "matches all nodes with value not in the passed list", |
| 107 | + (resolver, source) => new EqFilter(resolver, source) |
| 108 | + ); |
| 109 | + } |
| 110 | + if (namedType == typeof(IntGraphType) || |
| 111 | + namedType == typeof(FloatGraphType) || |
| 112 | + namedType == typeof(DateGraphType) || |
| 113 | + namedType == typeof(StringGraphType) || |
| 114 | + namedType == typeof(IdGraphType)) |
| 115 | + { |
| 116 | + AddFilterField( |
| 117 | + graphType.Value, |
| 118 | + fieldType, |
| 119 | + sourceType, |
| 120 | + $"{fieldType.Name}_lt", |
| 121 | + "matches all nodes with lesser value", |
| 122 | + (resolver, source) => new LtFilter(resolver, source) |
| 123 | + ); |
| 124 | + |
| 125 | + AddFilterField( |
| 126 | + graphType.Value, |
| 127 | + fieldType, |
| 128 | + sourceType, |
| 129 | + $"{fieldType.Name}_lte", |
| 130 | + "matches all nodes with lesser or equal value", |
| 131 | + (resolver, source) => new LteFilter(resolver, source) |
| 132 | + ); |
| 133 | + |
| 134 | + AddFilterField( |
| 135 | + graphType.Value, |
| 136 | + fieldType, |
| 137 | + sourceType, |
| 138 | + $"{fieldType.Name}_gt", |
| 139 | + "matches all nodes with greater value", |
| 140 | + (resolver, source) => new GtFilter(resolver, source) |
| 141 | + ); |
| 142 | + |
| 143 | + AddFilterField( |
| 144 | + graphType.Value, |
| 145 | + fieldType, |
| 146 | + sourceType, |
| 147 | + $"{fieldType.Name}_gte", |
| 148 | + "matches all nodes with greater or equal value", |
| 149 | + (resolver, source) => new GteFilter(resolver, source) |
| 150 | + ); |
| 151 | + } |
| 152 | + |
| 153 | + if (namedType == typeof(StringGraphType) || namedType == typeof(IdGraphType)) |
| 154 | + { |
| 155 | + AddFilterField( |
| 156 | + graphType.Value, |
| 157 | + fieldType, |
| 158 | + sourceType, |
| 159 | + $"{fieldType.Name}_contains", |
| 160 | + "matches all nodes with a value that contains given substring", |
| 161 | + (resolver, source) => new ContainsFilter(resolver, source) |
| 162 | + ); |
| 163 | + |
| 164 | + AddFilterField( |
| 165 | + graphType.Value, |
| 166 | + fieldType, |
| 167 | + sourceType, |
| 168 | + $"{fieldType.Name}_not_contains", |
| 169 | + "matches all nodes with a value that does not contain given substring", |
| 170 | + (resolver, source) => new NotFilter(new ContainsFilter(resolver, source)) |
| 171 | + ); |
| 172 | + |
| 173 | + AddFilterField( |
| 174 | + graphType.Value, |
| 175 | + fieldType, |
| 176 | + sourceType, |
| 177 | + $"{fieldType.Name}_starts_with", |
| 178 | + "matches all nodes with a value that starts with given substring", |
| 179 | + (resolver, source) => new StartsWithFilter(resolver, source) |
| 180 | + ); |
| 181 | + |
| 182 | + AddFilterField( |
| 183 | + graphType.Value, |
| 184 | + fieldType, |
| 185 | + sourceType, |
| 186 | + $"{fieldType.Name}_not_starts_with", |
| 187 | + "matches all nodes with a value that does not start with given substring", |
| 188 | + (resolver, source) => new NotFilter(new StartsWithFilter(resolver, source)) |
| 189 | + ); |
| 190 | + |
| 191 | + AddFilterField( |
| 192 | + graphType.Value, |
| 193 | + fieldType, |
| 194 | + sourceType, |
| 195 | + $"{fieldType.Name}_ends_with", |
| 196 | + "matches all nodes with a value that ends with given substring", |
| 197 | + (resolver, source) => new EndsWithFilter(resolver, source) |
| 198 | + ); |
| 199 | + |
| 200 | + AddFilterField( |
| 201 | + graphType.Value, |
| 202 | + fieldType, |
| 203 | + sourceType, |
| 204 | + $"{fieldType.Name}_not_ends_with", |
| 205 | + "matches all nodes with a value that does not end with given substring", |
| 206 | + (resolver, source) => new NotFilter(new EndsWithFilter(resolver, source)) |
| 207 | + ); |
| 208 | + } |
| 209 | + } |
| 210 | + |
| 211 | + protected void AddFilterField( |
| 212 | + IGraphType field, |
| 213 | + FieldType fieldType, |
| 214 | + IGraphType parentType, |
| 215 | + string name, |
| 216 | + string description, |
| 217 | + Func<Func<object, object>, object, IFilter> resolveFilter) |
| 218 | + { |
| 219 | + Field(field.GetType(), |
| 220 | + name, |
| 221 | + description, |
| 222 | + deprecationReason: fieldType.DeprecationReason, |
| 223 | + resolve: context => |
| 224 | + { |
| 225 | + object ResolveValue(object source) |
| 226 | + { |
| 227 | + var path = (context.Path ?? new [] { "filter" }).Concat(new[] { fieldType.Name }); |
| 228 | + var value = fieldType.Resolver.Resolve( |
| 229 | + new ResolveFieldContext |
| 230 | + { |
| 231 | + FieldName = fieldType.Name, |
| 232 | + FieldAst = new Field(null, new NameNode(fieldType.Name)), |
| 233 | + FieldDefinition = fieldType, |
| 234 | + ParentType = (IObjectGraphType)parentType, |
| 235 | + Source = source, |
| 236 | + Schema = context.Schema, |
| 237 | + Document = context.Document, |
| 238 | + Fragments = context.Fragments, |
| 239 | + RootValue = context.RootValue, |
| 240 | + UserContext = context.UserContext, |
| 241 | + Operation = context.Operation, |
| 242 | + Variables = context.Variables, |
| 243 | + CancellationToken = context.CancellationToken, |
| 244 | + Metrics = context.Metrics, |
| 245 | + Errors = context.Errors, |
| 246 | + Path = path |
| 247 | + } |
| 248 | + ); |
| 249 | + |
| 250 | + if (value is Task<object> task) |
| 251 | + { |
| 252 | + return task.Result; |
| 253 | + } |
| 254 | + |
| 255 | + return value; |
| 256 | + } |
| 257 | + |
| 258 | + return resolveFilter(ResolveValue, context.Source); |
| 259 | + }).ResolvedType = field; |
| 260 | + } |
| 261 | + |
| 262 | + protected void AddFilterField( |
| 263 | + IGraphType field, |
| 264 | + IGraphType parentType, |
| 265 | + string name, |
| 266 | + string description, |
| 267 | + Func<IEnumerable<IFilter>, IFilter> resolveFilter) |
| 268 | + { |
| 269 | + Field(field.GetType(), |
| 270 | + name, |
| 271 | + description, |
| 272 | + resolve: context => |
| 273 | + { |
| 274 | + var value = (IEnumerable<object>)context.Source; |
| 275 | + var subFilters = new List<IFilter>(); |
| 276 | + foreach (var obj in value) |
| 277 | + { |
| 278 | + var dict = (IDictionary<string, object>)obj; |
| 279 | + foreach (KeyValuePair<string, object> pair in dict) |
| 280 | + { |
| 281 | + subFilters.Add(this.ResolveFilter(pair, context)); |
| 282 | + } |
| 283 | + } |
| 284 | + return resolveFilter(subFilters); |
| 285 | + }).ResolvedType = field; |
| 286 | + } |
| 287 | + |
| 288 | + public Type Type { get; } |
| 289 | + |
| 290 | + public override string CollectTypes(TypeCollectionContext context) |
| 291 | + { |
| 292 | + var innerType = context.ResolveType(Type); |
| 293 | + var name = innerType.CollectTypes(context); |
| 294 | + context.AddType(name, innerType, context); |
| 295 | + return Name; |
| 296 | + } |
| 297 | + } |
| 298 | +} |
0 commit comments