openapi: 3.1.0
info:
  title: My Library API
  description: Documentation for My Library API
  version: '1.0'
servers:
  - url: http://localhost:8080
    description: Generated server url
tags:
  - name: Book Management
    description: APIs for book operations
  - name: Customer Management
    description: APIs for managing customer information and loyalty points
paths:
  /api/customers/{customerId}:
    put:
      tags:
        - Customer Management
      summary: Update customer information
      description: Updates an existing customer's information
      operationId: updateCustomer
      parameters:
        - name: customerId
          in: path
          description: Customer's UUID
          required: true
          schema:
            type: string
            format: uuid
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/CustomerInfo'
        required: true
      responses:
        '200':
          description: Customer successfully updated
          content:
            '*/*':
              schema:
                $ref: '#/components/schemas/CustomerDTO'
        '404':
          description: Customer not found
          content:
            '*/*':
              schema:
                $ref: '#/components/schemas/CustomerDTO'
    delete:
      tags:
        - Customer Management
      summary: Delete a customer
      description: Deletes a customer by their ID
      operationId: deleteCustomer
      parameters:
        - name: customerId
          in: path
          description: Customer's UUID
          required: true
          schema:
            type: string
            format: uuid
      responses:
        '204':
          description: Customer successfully deleted
        '404':
          description: Customer not found
  /api/customers:
    post:
      tags:
        - Customer Management
      summary: Register a new customer
      description: Creates a new customer with the provided information
      operationId: registerCustomer
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/CustomerInfo'
        required: true
      responses:
        '201':
          description: Customer successfully registered
          content:
            '*/*':
              schema:
                type: string
                format: uuid
        '400':
          description: Invalid customer information provided
          content:
            '*/*':
              schema:
                type: string
                format: uuid
  /api/customers/{customerId}/loyalty/subtract:
    post:
      tags:
        - Customer Management
      summary: Subtract loyalty points
      description: Subtracts loyalty points from a customer's account
      operationId: subtractLoyaltyPoints
      parameters:
        - name: customerId
          in: path
          description: Customer's UUID
          required: true
          schema:
            type: string
            format: uuid
        - name: points
          in: query
          description: Number of points to subtract
          required: true
          schema:
            type: integer
            format: int32
      responses:
        '200':
          description: Loyalty points successfully subtracted
          content:
            '*/*':
              schema:
                type: integer
                format: int32
        '400':
          description: Not enough loyalty points
          content:
            '*/*':
              schema:
                type: integer
                format: int32
        '404':
          description: Customer not found
          content:
            '*/*':
              schema:
                type: integer
                format: int32
  /api/customers/{customerId}/loyalty/add:
    post:
      tags:
        - Customer Management
      summary: Add loyalty points
      description: Adds loyalty points to a customer's account
      operationId: addLoyaltyPoints
      parameters:
        - name: customerId
          in: path
          description: Customer's UUID
          required: true
          schema:
            type: string
            format: uuid
        - name: points
          in: query
          description: Number of points to add
          required: true
          schema:
            type: integer
            format: int32
      responses:
        '200':
          description: Loyalty points successfully added
          content:
            '*/*':
              schema:
                type: integer
                format: int32
        '404':
          description: Customer not found
          content:
            '*/*':
              schema:
                type: integer
                format: int32
  /api/books:
    get:
      tags:
        - Book Management
      summary: Get all books
      description: Returns a paginated list of books
      operationId: getBooks
      parameters:
        - name: pageable
          in: query
          required: true
          schema:
            $ref: '#/components/schemas/Pageable'
      responses:
        '200':
          description: Successfully retrieved books
          content:
            '*/*':
              schema:
                $ref: '#/components/schemas/Page'
    post:
      tags:
        - Book Management
      summary: Register a new book
      description: Adds a new book to the system
      operationId: registerBook
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/BookDTO'
        required: true
      responses:
        '201':
          description: Book successfully registered
          content:
            '*/*':
              schema:
                type: integer
                format: int64
        '400':
          description: Invalid book data provided
          content:
            '*/*':
              schema:
                type: string
        '406':
          description: Conflict with existing book in database
          content:
            '*/*':
              schema:
                type: string
  /api/customers/phone/{phoneNumber}:
    get:
      tags:
        - Customer Management
      summary: Find customer by phone number
      description: Returns customer information based on phone number
      operationId: findCustomerByPhoneNumber
      parameters:
        - name: phoneNumber
          in: path
          description: Customer's phone number
          required: true
          schema:
            type: string
      responses:
        '200':
          description: Customer found
          content:
            '*/*':
              schema:
                $ref: '#/components/schemas/CustomerDTO'
        '404':
          description: Customer not found
          content:
            '*/*':
              schema:
                $ref: '#/components/schemas/CustomerDTO'
  /api/books/{bookId}:
    get:
      tags:
        - Book Management
      summary: Get book by ID
      description: Retrieves a book by its ID
      operationId: getBookById
      parameters:
        - name: bookId
          in: path
          description: ID of the book to retrieve
          required: true
          schema:
            type: integer
            format: int64
      responses:
        '200':
          description: Book found
          content:
            '*/*':
              schema:
                $ref: '#/components/schemas/BookDTO'
        '404':
          description: Book not found
components:
  schemas:
    CustomerInfo:
      type: object
      properties:
        firstName:
          type: string
        lastName:
          type: string
        phoneNumber:
          type: string
      required:
        - firstName
        - lastName
        - phoneNumber
    CustomerDTO:
      type: object
      properties:
        id:
          type: string
          format: uuid
        firstName:
          type: string
        lastName:
          type: string
        phoneNumber:
          type: string
        loyaltyPoints:
          type: integer
          format: int32
    BookDTO:
      type: object
      properties:
        isbn:
          type: integer
          format: int64
        title:
          type: string
          maxLength: 255
          minLength: 0
        author:
          type: string
        publisher:
          type: string
        publicationDate:
          type: string
          format: date
        price:
          type: number
          format: double
        quantity:
          type: integer
          format: int32
        categories:
          type: array
          description: Book categories
          enum:
            - FICTION
            - NON_FICTION
            - SCIENCE_FICTION
            - FANTASY
            - MYSTERY
            - THRILLER
            - ROMANCE
            - BIOGRAPHY
            - HISTORY
            - POETRY
            - CHILDRENS
            - YOUNG_ADULT
            - SCIENCE
            - PHILOSOPHY
            - SELF_HELP
            - TRAVEL
            - COOKING
            - ART
            - RELIGION
            - REFERENCE
          example:
            - FICTION
            - THRILLER
          items:
            type: string
        description:
          type: string
        language:
          type: string
      required:
        - author
        - categories
        - isbn
        - language
        - price
        - publicationDate
        - publisher
        - quantity
        - title
    Pageable:
      type: object
      properties:
        page:
          type: integer
          format: int32
          minimum: 0
        size:
          type: integer
          format: int32
          minimum: 1
        sort:
          type: array
          items:
            type: string
    Page:
      type: object
      properties:
        totalElements:
          type: integer
          format: int64
        totalPages:
          type: integer
          format: int32
        size:
          type: integer
          format: int32
        content:
          type: array
          items:
            type: object
        number:
          type: integer
          format: int32
        sort:
          $ref: '#/components/schemas/SortObject'
        first:
          type: boolean
        last:
          type: boolean
        pageable:
          $ref: '#/components/schemas/PageableObject'
        numberOfElements:
          type: integer
          format: int32
        empty:
          type: boolean
    PageableObject:
      type: object
      properties:
        offset:
          type: integer
          format: int64
        sort:
          $ref: '#/components/schemas/SortObject'
        pageSize:
          type: integer
          format: int32
        pageNumber:
          type: integer
          format: int32
        unpaged:
          type: boolean
        paged:
          type: boolean
    SortObject:
      type: object
      properties:
        empty:
          type: boolean
        unsorted:
          type: boolean
        sorted:
          type: boolean