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import * as ts from 'typescript'
import {generateClassDeclaration} from './helpers'
export async function generateContractClass(contractName: string, abi: ABI.Def) {
// Prepare the member fields of the class
const classMembers: ts.ClassElement[] = []
// Generate the `constructor` member
const constructorParams: ts.ParameterDeclaration[] = [
ts.factory.createParameterDeclaration(
undefined,
undefined,
'args',
undefined,
ts.factory.createTypeReferenceNode(ts.factory.createIdentifier('PartialBy'), [
ts.factory.createTypeReferenceNode(
ts.factory.createIdentifier('ContractArgs'),
undefined
),
ts.factory.createUnionTypeNode([
ts.factory.createLiteralTypeNode(ts.factory.createStringLiteral('abi')),
ts.factory.createLiteralTypeNode(ts.factory.createStringLiteral('account')),
]),
]),
undefined
),
]
const constructorBody = ts.factory.createBlock(
[generateConstructorFunction(contractName)],
true
)
const constructorMember = ts.factory.createConstructorDeclaration(
undefined,
constructorParams,
constructorBody
)
classMembers.push(constructorMember)
if (abi.actions.length) {
const actionMethod = generateActionMethod()
classMembers.push(actionMethod)
}
if (abi.action_results.length) {
const readonlyMethod = generateReadonlyMethod()
classMembers.push(readonlyMethod)
}
if (abi.tables.length) {
const tableMethod = generateTableMethod()
classMembers.push(tableMethod)
}
// Construct class declaration
const classDeclaration = generateClassDeclaration('Contract', classMembers, {
parent: 'BaseContract',
export: true,
})
return {classDeclaration}
}
function generateConstructorFunction(contractName) {
return ts.factory.createExpressionStatement(
ts.factory.createCallExpression(ts.factory.createSuper(), undefined, [
ts.factory.createObjectLiteralExpression(
[
ts.factory.createPropertyAssignment(
'client',
ts.factory.createPropertyAccessExpression(
ts.factory.createIdentifier('args'),
'client'
)
),
ts.factory.createPropertyAssignment('abi', ts.factory.createIdentifier('abi')),
ts.factory.createPropertyAssignment(
'account',
ts.factory.createBinaryExpression(
ts.factory.createPropertyAccessExpression(
ts.factory.createIdentifier('args'),
'account'
),
ts.factory.createToken(ts.SyntaxKind.BarBarToken),
ts.factory.createCallExpression(
ts.factory.createPropertyAccessExpression(
ts.factory.createIdentifier('Name'),
'from'
),
undefined,
[ts.factory.createStringLiteral(contractName)]
)
)
),
],
true
),
])
)
}
function generateActionMethod(): ts.MethodDeclaration {
const typeParameter = ts.factory.createTypeParameterDeclaration(
undefined,
'T',
ts.factory.createTypeReferenceNode('ActionNames')
)
// 3. Create the function parameters.
const nameParameter = ts.factory.createParameterDeclaration(
[],
undefined,
'name',
undefined,
ts.factory.createTypeReferenceNode(ts.factory.createIdentifier('T')),
undefined
)
const dataParameter = ts.factory.createParameterDeclaration(
[],
undefined,
'data',
undefined,
ts.factory.createTypeReferenceNode('ActionNameParams[T]'),
undefined
)
const optionsParameter = ts.factory.createParameterDeclaration(
[],
undefined,
'options',
ts.factory.createToken(ts.SyntaxKind.QuestionToken),
ts.factory.createTypeReferenceNode('ActionOptions'),
undefined
)
// 4. Generate the function body.
const methodBody = ts.factory.createBlock(
[
ts.factory.createReturnStatement(
ts.factory.createCallExpression(
ts.factory.createPropertyAccessExpression(
ts.factory.createSuper(),
ts.factory.createIdentifier('action')
),
undefined,
[
ts.factory.createIdentifier('name'),
ts.factory.createIdentifier('data'),
ts.factory.createIdentifier('options'),
]
)
),
],
true
)
return ts.factory.createMethodDeclaration(
[],
undefined,
'action',
undefined,
[typeParameter],
[nameParameter, dataParameter, optionsParameter],
ts.factory.createTypeReferenceNode('Action'),
methodBody
)
}
function generateReadonlyMethod(): ts.MethodDeclaration {
// Create the generic type parameter 'T' with a constraint to 'ActionReturnNames'
const typeParameter = ts.factory.createTypeParameterDeclaration(
undefined,
'T',
ts.factory.createTypeReferenceNode('ActionReturnNames')
)
// Create the function parameters.
const nameParameter = ts.factory.createParameterDeclaration(
[],
undefined,
'name',
undefined,
ts.factory.createTypeReferenceNode('T'),
undefined
)
const dataParameter = ts.factory.createParameterDeclaration(
[],
undefined,
'data',
ts.factory.createToken(ts.SyntaxKind.QuestionToken),
ts.factory.createIndexedAccessTypeNode(
ts.factory.createTypeReferenceNode('ActionNameParams'),
ts.factory.createTypeReferenceNode('T')
),
undefined
)
// Generate the function body.
const methodBody = ts.factory.createBlock(
[
ts.factory.createReturnStatement(
ts.factory.createAsExpression(
ts.factory.createAsExpression(
ts.factory.createCallExpression(
ts.factory.createPropertyAccessExpression(
ts.factory.createSuper(),
'readonly'
),
undefined,
[
ts.factory.createIdentifier('name'),
ts.factory.createIdentifier('data'),
]
),
ts.factory.createKeywordTypeNode(ts.SyntaxKind.UnknownKeyword)
),
ts.factory.createIndexedAccessTypeNode(
ts.factory.createTypeReferenceNode('ActionReturnValues'),
ts.factory.createTypeReferenceNode('T')
)
)
),
],
true
)
// Create the method declaration
return ts.factory.createMethodDeclaration(
[],
undefined,
'readonly',
undefined,
[typeParameter],
[nameParameter, dataParameter],
ts.factory.createIndexedAccessTypeNode(
ts.factory.createTypeReferenceNode('ActionReturnValues'),
ts.factory.createTypeReferenceNode('T')
),
methodBody
)
}
export function generateTableMethod(): ts.MethodDeclaration {
// Create the generic type parameter 'T' with a constraint to 'tables'
const typeParameter = ts.factory.createTypeParameterDeclaration(
undefined,
ts.factory.createIdentifier('T'),
ts.factory.createTypeReferenceNode(ts.factory.createIdentifier('TableNames')),
undefined
)
// Create the parameters for the method
const nameParameter = ts.factory.createParameterDeclaration(
[],
undefined,
ts.factory.createIdentifier('name'),
undefined,
ts.factory.createTypeReferenceNode('T'),
undefined
)
const scopeParameter = ts.factory.createParameterDeclaration(
[],
undefined,
'scope',
ts.factory.createToken(ts.SyntaxKind.QuestionToken),
ts.factory.createTypeReferenceNode('NameType'),
undefined
)
// Create the method return type 'Table<RowType<T>>'
const returnType = ts.factory.createTypeReferenceNode(ts.factory.createIdentifier('Table'), [
ts.factory.createTypeReferenceNode(ts.factory.createIdentifier('RowType'), [
ts.factory.createTypeReferenceNode(ts.factory.createIdentifier('T')),
]),
])
// Generate the function body
const methodBody = ts.factory.createBlock(
[
ts.factory.createReturnStatement(
ts.factory.createCallExpression(
ts.factory.createPropertyAccessExpression(
ts.factory.createSuper(),
ts.factory.createIdentifier('table')
),
undefined,
[
ts.factory.createIdentifier('name'),
ts.factory.createIdentifier('scope'),
ts.factory.createElementAccessExpression(
ts.factory.createIdentifier('TableMap'),
ts.factory.createIdentifier('name')
),
]
)
),
],
true
)
// Create the method declaration
const methodDeclaration = ts.factory.createMethodDeclaration(
[],
undefined,
'table',
undefined,
[typeParameter],
[nameParameter, scopeParameter],
returnType,
methodBody
)
return methodDeclaration
}
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