// Package capture is the Clean-Architecture use-case for the uniform
// capture capability (issue #49/#51): persist a finished session's
// valuable output — insights → brain, action items → Gitea tickets,
// optional summary → ai-sessions — with one invocation, identical core
// behaviour across every harness.
//
// This package is pure orchestration. It depends only on ports
// (interfaces) and plain entities — no HTTP, no live Gitea, no embedding
// or audit I/O. The real adapters are wired in #52 (Gitea tracker), #53
// (REST + I1 origin gate), and #54/#55 (audit path + relay). The I1
// sovereignty refusal and the classification-aware audit degradation are
// deliberately NOT here — those need the server-derived principal origin
// (#53) and the loki/buffer machinery (#54). What lives here is everything
// testable against fakes: validation, effective-classification resolution
// (stricter wins), best-effort orchestration, and the partial receipt.
package capture

// Zone is the trust zone a capture originates from, server-derived from
// the authenticated principal (spec §4.2 / I1). It is NEVER taken from
// caller input — context.Harness is descriptive telemetry only.
type Zone int

const (
	// ZoneUnknown means the origin was not set. The REST adapter always
	// sets a concrete zone; the service treats Unknown as "not gated" (only
	// an explicit ZoneUSNexus triggers the I1 refusal) so the gate can
	// never fire on a caller-controllable default.
	ZoneUnknown Zone = iota
	// ZoneSovereign is sovereign soil (homelab / Tailscale CLI callers).
	ZoneSovereign
	// ZoneUSNexus is a non-sovereign US-jurisdiction surface (e.g.
	// claude.ai). Confidential captures through it are refused (I1).
	ZoneUSNexus
)

// String renders the zone for audit/refusal messages.
func (z Zone) String() string {
	switch z {
	case ZoneSovereign:
		return "sovereign-soil"
	case ZoneUSNexus:
		return "us-nexus"
	default:
		return "unknown"
	}
}

// CaptureContext is the per-session metadata accompanying a capture.
//
// Classification is the caller-declared sensitivity (model C, spec §4.1):
// the server independently derives the target's classification and gates
// on the stricter of the two. Principal and Origin are server-derived from
// the authenticated identity (the REST adapter populates them); they are
// never caller-asserted. Harness is descriptive telemetry only — never a
// gate input.
type CaptureContext struct {
	Harness        string
	SessionRef     string
	Fidelity       string
	Actor          string
	Classification string // caller-declared level token ("" = unspecified)
	Principal      string // server-derived (auth); audit identity
	Origin         Zone   // server-derived trust zone; the I1 gate input
}

// Insight is one piece of session knowledge bound for the brain. A
// non-empty SupersedeSlug routes to Update (revise in place); otherwise
// Write (create).
type Insight struct {
	Text          string
	Wing          string
	Hall          string
	SupersedeSlug string
}

// Ticket is one action item bound for a Gitea repo. Owner is always the
// operator (set by the tracker adapter), never carried here.
type Ticket struct {
	Repo   string
	Action string // create | close | comment
	Number int    // required for close/comment
	Title  string // required for create
	Body   string
}

// Summary is an optional session summary bound for ai-sessions.
type Summary struct {
	Title        string
	Body         string
	ReposTouched []string
}

// CaptureInput is the whole capture request.
type CaptureInput struct {
	Context  CaptureContext
	Insights []Insight
	Tickets  []Ticket
	Summary  *Summary
	DryRun   bool
}

// InsightResult is the per-insight outcome in the receipt.
type InsightResult struct {
	ID          string `json:"id,omitempty"`
	Path        string `json:"path,omitempty"`
	ContentHash string `json:"content_hash,omitempty"`
	Superseded  bool   `json:"superseded"`
	OK          bool   `json:"ok"`
}

// TicketResult is the per-ticket outcome in the receipt.
type TicketResult struct {
	Repo   string `json:"repo"`
	Number int    `json:"number,omitempty"`
	Action string `json:"action"`
	URL    string `json:"url,omitempty"`
	OK     bool   `json:"ok"`
}

// SummaryResult is the summary outcome in the receipt.
type SummaryResult struct {
	Path string `json:"path,omitempty"`
	OK   bool   `json:"ok"`
}

// ItemError pins a failure to a specific request item for the partial
// receipt. Item is a stable locator like "insight[1]" or "ticket[0]".
type ItemError struct {
	Item  string `json:"item"`
	Error string `json:"error"`
}

// CaptureReceipt is the structured, partial-aware result. Per-item ok
// flags plus a flat Errors list make partial success explicit; the
// caller never has to infer what landed.
type CaptureReceipt struct {
	Insights                []InsightResult `json:"insights"`
	Tickets                 []TicketResult  `json:"tickets"`
	Summary                 *SummaryResult  `json:"summary,omitempty"`
	Errors                  []ItemError     `json:"errors"`
	EffectiveClassification string          `json:"effective_classification,omitempty"`
	DryRun                  bool            `json:"dry_run"`
}