import { describe as suite, it, expect } from 'vitest'
import {
  type CapabilityReport,
  cite,
  citeVerbose,
  describe as describeDetermination,
  describeMeasurement,
  evidence,
  formatReport,
  formatRollUp,
  label,
  overall,
  rollUp,
  validateReport,
} from '../src/index.js'

suite('determination', () => {
  it('never renders a non-pass as a pass', () => {
    expect(label('not-assessed')).toBe('NOT ASSESSED')
    expect(label('not-applicable')).toBe('N/A')
    expect(describeDetermination('not-assessed')).toContain('not a pass')
  })

  it('rolls an empty set up to not-assessed, not pass', () => {
    // [].every(...) === true is the exact trap this closes.
    expect(rollUp([])).toBe('not-assessed')
  })

  it('lets one failure dominate', () => {
    expect(rollUp(['pass', 'pass', 'fail'])).toBe('fail')
  })

  it('does not let an unassessed item average away', () => {
    expect(rollUp(['pass', 'not-assessed'])).toBe('not-assessed')
  })

  it('reports all-N/A as N/A rather than pass', () => {
    expect(rollUp(['not-applicable', 'not-applicable'])).toBe('not-applicable')
  })
})

suite('citations', () => {
  it('cites source as path:line so a terminal can open it', () => {
    expect(cite(evidence.file('docker-compose.yml', 42, 'ports: ["2222:22"]'))).toBe('docker-compose.yml:42')
  })

  it('cites a row as table#id with the deciding column', () => {
    expect(cite(evidence.record('requirements', 'a1b2c3', 'parent_id', 'null')))
      .toBe('requirements#a1b2c3 (parent_id)')
  })

  it('carries sample count into the citation, because 100% of nothing is not 100%', () => {
    const none = evidence.measurement('uptime', null, 0, { unit: '%', window: '2026-07' })
    const real = evidence.measurement('uptime', 98.3, 8640, { unit: '%', window: '2026-07' })
    expect(cite(none)).toContain('not computable')
    expect(cite(none)).toContain('0 samples')
    expect(cite(real)).toContain('98.3%')
    expect(cite(real)).toContain('8640 samples')
  })

  it('reads a zero-sample measurement as uncomputable, not as a value', () => {
    const s = evidence.measurement('Availability', null, 0, { window: '2026-07' }).source
    expect(describeMeasurement(s as never)).toBe(
      'No samples for Availability in 2026-07; it cannot be computed.',
    )
  })

  it('includes excerpt and note in the verbose form', () => {
    const lines = citeVerbose(evidence.file('server/api/x.ts', 7, 'const q = sql(raw)', 'unparameterised'))
    expect(lines[0]).toBe('server/api/x.ts:7')
    expect(lines.join('\n')).toContain('const q = sql(raw)')
    expect(lines.join('\n')).toContain('unparameterised')
  })
})

const clean: CapabilityReport = {
  capability: 'SideDoor',
  scope: '49 compose services',
  examined: 49,
  findings: [],
}

suite('report', () => {
  it('derives not-assessed from an empty scan instead of reporting clean', () => {
    const empty: CapabilityReport = { capability: 'SideDoor', scope: 'nothing', examined: 0, findings: [] }
    expect(overall(empty)).toBe('not-assessed')
    const out = formatReport(empty)
    expect(out).toContain('NOT ASSESSED')
    expect(out).not.toContain('✓')
  })

  it('reports a genuine clean run as a pass', () => {
    expect(overall(clean)).toBe('pass')
    expect(formatReport(clean)).toContain('✓')
  })

  it('rejects a conclusion with no evidence behind it', () => {
    const asserted: CapabilityReport = {
      capability: 'CertPack',
      scope: '3 controls',
      examined: 3,
      findings: [{ id: 'f1', summary: 'AC-2 implemented', determination: 'pass', severity: 'info', evidence: [] }],
    }
    const problems = validateReport(asserted)
    expect(problems).toHaveLength(1)
    expect(problems[0]!.problem).toContain('no evidence')
  })

  it('allows a not-assessed finding to carry no evidence', () => {
    const unassessed: CapabilityReport = {
      capability: 'CertPack',
      scope: '3 controls',
      examined: 3,
      findings: [{ id: 'f1', summary: 'AC-2', determination: 'not-assessed', severity: 'high', evidence: [] }],
    }
    expect(validateReport(unassessed)).toHaveLength(0)
  })

  it('catches duplicate finding ids', () => {
    const dup: CapabilityReport = {
      capability: 'X', scope: 's', examined: 2,
      findings: [
        { id: 'f1', summary: 'a', determination: 'pass', severity: 'info', evidence: [evidence.file('a.ts')] },
        { id: 'f1', summary: 'b', determination: 'pass', severity: 'info', evidence: [evidence.file('b.ts')] },
      ],
    }
    expect(validateReport(dup).some(p => p.problem === 'duplicate finding id')).toBe(true)
  })

  it('shows a missing citation loudly rather than silently', () => {
    const r: CapabilityReport = {
      capability: 'X', scope: 's', examined: 1,
      findings: [{ id: 'f1', summary: 'something is wrong', determination: 'fail', severity: 'high', evidence: [] }],
    }
    expect(formatReport(r)).toContain('(no evidence attached)')
  })

  it('does not label an unassessed finding as a missing citation', () => {
    // Having nothing to cite IS the content of a not-assessed finding.
    // Calling it a missing citation reads as a defect in the report rather
    // than the gap the report is describing.
    const r: CapabilityReport = {
      capability: 'X', scope: 's', examined: 1,
      findings: [{ id: 'f1', summary: 'rule covered nothing', determination: 'not-assessed', severity: 'medium', evidence: [] }],
    }
    const out = formatReport(r)
    expect(out).toContain('(nothing was observed)')
    expect(out).not.toContain('(no evidence attached)')
  })

  it('sorts worst first so a critical cannot hide under info lines', () => {
    const r: CapabilityReport = {
      capability: 'SideDoor', scope: '2 services', examined: 2,
      findings: [
        { id: 'f2', summary: 'loopback bind', determination: 'pass', severity: 'info', evidence: [evidence.file('a.yml', 3)] },
        { id: 'f1', summary: 'SSH published on a host port', determination: 'fail', severity: 'critical', evidence: [evidence.file('b.yml', 9, '2222:22')] },
      ],
    }
    const out = formatReport(r)
    expect(out.indexOf('SSH published')).toBeLessThan(out.indexOf('loopback bind'))
    expect(overall(r)).toBe('fail')
  })

  it('prints every citation in full mode', () => {
    const r: CapabilityReport = {
      capability: 'X', scope: 's', examined: 1,
      findings: [{
        id: 'f1', summary: 'drift', determination: 'fail', severity: 'high',
        evidence: [evidence.file('a.ts', 1), evidence.file('b.ts', 2)],
      }],
    }
    expect(formatReport(r, { evidence: 'inline' })).toContain('(+1 more)')
    const full = formatReport(r, { evidence: 'full' })
    expect(full).toContain('a.ts:1')
    expect(full).toContain('b.ts:2')
  })
})

suite('roll-up', () => {
  it('does not let healthy capabilities dilute an unrun one', () => {
    const unrun: CapabilityReport = { capability: 'UnrunCheck', scope: 'none', examined: 0, findings: [] }
    const out = formatRollUp([clean, unrun])
    expect(out).toContain('NOT ASSESSED')
    expect(rollUp([overall(clean), overall(unrun)])).toBe('not-assessed')
  })
})