openapi: 3.0.3
info:
  title: happyDeliver API
  description: Email Deliverability Testing Platform API
  version: 0.1.0
  contact:
    name: happyDomain team
    url: https://github.com/happyDomain/happydeliver
    email: contact+api@happydomain.org
  license:
    name: GNU Affero General Public License v3.0 or later
    url: https://spdx.org/licenses/AGPL-3.0-or-later.html

servers:
  - url: http://localhost:8080/api
    description: Local development server
  - url: https://api.example.com/api
    description: Production server

tags:
  - name: tests
    description: Test management operations
  - name: reports
    description: Report retrieval operations
  - name: health
    description: Service health and status

paths:
  /test:
    post:
      tags:
        - tests
      summary: Create a new deliverability test
      description: Generates a unique test email address for sending test emails. No database record is created until an email is received.
      operationId: createTest
      responses:
        '201':
          description: Test email address generated successfully
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/TestResponse'
        '500':
          description: Internal server error
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'

  /test/{id}:
    get:
      tags:
        - tests
      summary: Get test status
      description: Check if a report exists for the given test ID (base32-encoded). Returns pending if no report exists, analyzed if a report is available.
      operationId: getTest
      parameters:
        - name: id
          in: path
          required: true
          schema:
            type: string
            pattern: '^[a-z0-9-]+$'
            description: Base32-encoded test ID (with hyphens)
      responses:
        '200':
          description: Test status retrieved successfully
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Test'
        '500':
          description: Internal server error
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'

  /report/{id}:
    get:
      tags:
        - reports
      summary: Get detailed report
      description: Retrieve comprehensive deliverability analysis report
      operationId: getReport
      parameters:
        - name: id
          in: path
          required: true
          schema:
            type: string
            pattern: '^[a-z0-9-]+$'
            description: Base32-encoded test ID (with hyphens)
      responses:
        '200':
          description: Report retrieved successfully
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Report'
        '404':
          description: Report not found
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'

  /report/{id}/raw:
    get:
      tags:
        - reports
      summary: Get raw annotated email
      description: Retrieve the original email with headers added by filters
      operationId: getRawEmail
      parameters:
        - name: id
          in: path
          required: true
          schema:
            type: string
            pattern: '^[a-z0-9-]+$'
            description: Base32-encoded test ID (with hyphens)
      responses:
        '200':
          description: Raw email retrieved successfully
          content:
            text/plain:
              schema:
                type: string
        '404':
          description: Email not found
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'

  /report/{id}/reanalyze:
    post:
      tags:
        - reports
      summary: Reanalyze email and regenerate report
      description: Re-run the analysis on the stored raw email to regenerate the report with the latest analyzer version. This is useful after analyzer improvements or bug fixes.
      operationId: reanalyzeReport
      parameters:
        - name: id
          in: path
          required: true
          schema:
            type: string
            pattern: '^[a-z0-9-]+$'
            description: Base32-encoded test ID (with hyphens)
      responses:
        '200':
          description: Report regenerated successfully
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Report'
        '404':
          description: Email not found
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '500':
          description: Internal server error during reanalysis
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'

  /status:
    get:
      tags:
        - health
      summary: Service health check
      description: Get service health status and component versions
      operationId: getStatus
      responses:
        '200':
          description: Service status
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Status'

components:
  schemas:
    Test:
      type: object
      required:
        - id
        - email
        - status
      properties:
        id:
          type: string
          pattern: '^[a-z0-9-]+$'
          description: Unique test identifier (base32-encoded with hyphens)
          example: "krfwg4z-amrqw4z-zmorsw2-djmfzgk-3a"
        email:
          type: string
          format: email
          description: Unique test email address
          example: "test-krfwg4z-amrqw4z-zmorsw2-djmfzgk-3a@example.com"
        status:
          type: string
          enum: [pending, analyzed]
          description: Current test status (pending = no report yet, analyzed = report available)
          example: "analyzed"

    TestResponse:
      type: object
      required:
        - id
        - email
        - status
      properties:
        id:
          type: string
          pattern: '^[a-z0-9-]+$'
          description: Unique test identifier (base32-encoded with hyphens)
          example: "krfwg4z-amrqw4z-zmorsw2-djmfzgk-3a"
        email:
          type: string
          format: email
          example: "test-krfwg4z-amrqw4z-zmorsw2-djmfzgk-3a@example.com"
        status:
          type: string
          enum: [pending]
          example: "pending"
        message:
          type: string
          example: "Send your test email to the address above"

    Report:
      type: object
      required:
        - id
        - test_id
        - score
        - grade
        - checks
        - created_at
      properties:
        id:
          type: string
          pattern: '^[a-z0-9-]+$'
          description: Report identifier (base32-encoded with hyphens)
        test_id:
          type: string
          pattern: '^[a-z0-9-]+$'
          description: Associated test ID (base32-encoded with hyphens)
        score:
          type: number
          format: float
          minimum: 0
          maximum: 100
          description: Overall deliverability score as percentage (0-100)
          example: 85
        grade:
          type: string
          enum: [A+, A, B, C, D, E, F]
          description: Letter grade representation of the score (A+ is best, F is worst)
          example: "A"
        summary:
          $ref: '#/components/schemas/ScoreSummary'
        checks:
          type: array
          items:
            $ref: '#/components/schemas/Check'
        authentication:
          $ref: '#/components/schemas/AuthenticationResults'
        spamassassin:
          $ref: '#/components/schemas/SpamAssassinResult'
        dns_records:
          type: array
          items:
            $ref: '#/components/schemas/DNSRecord'
        blacklists:
          type: array
          items:
            $ref: '#/components/schemas/BlacklistCheck'
        raw_headers:
          type: string
          description: Raw email headers
        created_at:
          type: string
          format: date-time

    ScoreSummary:
      type: object
      required:
        - authentication_score
        - spam_score
        - blacklist_score
        - content_score
        - header_score
      properties:
        authentication_score:
          type: number
          format: float
          minimum: 0
          maximum: 100
          description: SPF/DKIM/DMARC score (in percentage)
          example: 28
        spam_score:
          type: number
          format: float
          minimum: 0
          maximum: 100
          description: SpamAssassin score (in percentage)
          example: 15
        blacklist_score:
          type: number
          format: float
          minimum: 0
          maximum: 100
          description: Blacklist check score (in percentage)
          example: 20
        content_score:
          type: number
          format: float
          minimum: 0
          maximum: 100
          description: Content quality score (in percentage)
          example: 18
        header_score:
          type: number
          format: float
          minimum: 0
          maximum: 100
          description: Header quality score (in percentage)
          example: 9

    Check:
      type: object
      required:
        - category
        - name
        - status
        - score
        - grade
        - message
      properties:
        category:
          type: string
          enum: [authentication, dns, content, blacklist, headers, spam]
          description: Check category
          example: "authentication"
        name:
          type: string
          description: Check name
          example: "DKIM Signature"
        status:
          type: string
          enum: [pass, fail, warn, info, error]
          description: Check result status
          example: "pass"
        score:
          type: number
          format: float
          description: Points contributed to total score
          example: 10
        grade:
          type: string
          enum: [A+, A, B, C, D, E, F]
          description: Letter grade representation of the score (A+ is best, F is worst)
          example: "A"
        message:
          type: string
          description: Human-readable result message
          example: "DKIM signature is valid"
        details:
          type: string
          description: Additional details (may be JSON)
        severity:
          type: string
          enum: [critical, high, medium, low, info]
          description: Issue severity
          example: "info"
        advice:
          type: string
          description: Remediation advice
          example: "Your DKIM configuration is correct"

    AuthenticationResults:
      type: object
      properties:
        spf:
          $ref: '#/components/schemas/AuthResult'
        dkim:
          type: array
          items:
            $ref: '#/components/schemas/AuthResult'
        dmarc:
          $ref: '#/components/schemas/AuthResult'
        bimi:
          $ref: '#/components/schemas/AuthResult'
        arc:
          $ref: '#/components/schemas/ARCResult'

    AuthResult:
      type: object
      required:
        - result
      properties:
        result:
          type: string
          enum: [pass, fail, none, neutral, softfail, temperror, permerror]
          description: Authentication result
          example: "pass"
        domain:
          type: string
          description: Domain being authenticated
          example: "example.com"
        selector:
          type: string
          description: DKIM selector (for DKIM only)
          example: "default"
        details:
          type: string
          description: Additional details about the result

    ARCResult:
      type: object
      required:
        - result
      properties:
        result:
          type: string
          enum: [pass, fail, none]
          description: Overall ARC chain validation result
          example: "pass"
        chain_valid:
          type: boolean
          description: Whether the ARC chain signatures are valid
          example: true
        chain_length:
          type: integer
          description: Number of ARC sets in the chain
          example: 2
        details:
          type: string
          description: Additional details about ARC validation
          example: "ARC chain valid with 2 intermediaries"

    SpamAssassinResult:
      type: object
      required:
        - score
        - required_score
        - is_spam
      properties:
        score:
          type: number
          format: float
          description: SpamAssassin spam score
          example: 2.3
        required_score:
          type: number
          format: float
          description: Threshold for spam classification
          example: 5.0
        is_spam:
          type: boolean
          description: Whether message is classified as spam
          example: false
        tests:
          type: array
          items:
            type: string
          description: List of triggered SpamAssassin tests
          example: ["BAYES_00", "DKIM_SIGNED"]
        report:
          type: string
          description: Full SpamAssassin report

    DNSRecord:
      type: object
      required:
        - domain
        - record_type
        - status
      properties:
        domain:
          type: string
          description: Domain name
          example: "example.com"
        record_type:
          type: string
          enum: [MX, SPF, DKIM, DMARC, BIMI]
          description: DNS record type
          example: "SPF"
        status:
          type: string
          enum: [found, missing, invalid]
          description: Record status
          example: "found"
        value:
          type: string
          description: Record value
          example: "v=spf1 include:_spf.example.com ~all"

    BlacklistCheck:
      type: object
      required:
        - ip
        - rbl
        - listed
      properties:
        ip:
          type: string
          description: IP address checked
          example: "192.0.2.1"
        rbl:
          type: string
          description: RBL/DNSBL name
          example: "zen.spamhaus.org"
        listed:
          type: boolean
          description: Whether IP is listed
          example: false
        response:
          type: string
          description: RBL response code or message
          example: "127.0.0.2"

    Status:
      type: object
      required:
        - status
        - version
      properties:
        status:
          type: string
          enum: [healthy, degraded, unhealthy]
          description: Overall service status
          example: "healthy"
        version:
          type: string
          description: Service version
          example: "0.1.0-dev"
        components:
          type: object
          properties:
            database:
              type: string
              enum: [up, down]
              example: "up"
            mta:
              type: string
              enum: [up, down]
              example: "up"
        uptime:
          type: integer
          description: Service uptime in seconds
          example: 3600

    Error:
      type: object
      required:
        - error
        - message
      properties:
        error:
          type: string
          description: Error code
          example: "not_found"
        message:
          type: string
          description: Human-readable error message
          example: "Test not found"
        details:
          type: string
          description: Additional error details