package httpapi

import (
	"time"

	"cloudipvalidator/internal/db"
)

// DTOs for the admin queue-management and dynamic-config endpoints
// (/api/v1/admin/ips, /api/v1/admin/config/*). Unlike the older read-only
// admin endpoints (which marshal internal/db model structs directly, in
// PascalCase), these use explicit snake_case JSON tags to match the
// agent/prober DTO convention.

type submitIPsRequest struct {
	Addresses []string `json:"addresses"`
}

type submitIPsResponse struct {
	Added             []string `json:"added"`
	Requeued          []string `json:"requeued"`
	Reordered         []string `json:"reordered"`
	SkippedInProgress []string `json:"skipped_in_progress"`
}

type deleteIPsRequest struct {
	Addresses []string `json:"addresses"`
}

type deleteIPsResponse struct {
	Deleted  []string `json:"deleted"`
	NotFound []string `json:"not_found"`
}

type clearQueueResponse struct {
	Deleted []string `json:"deleted"`
	Count   int      `json:"count"`
}

type scanIPsResponse struct {
	ScannedFree       int      `json:"scanned_free"`
	Added             []string `json:"added"`
	Requeued          []string `json:"requeued"`
	Reordered         []string `json:"reordered"`
	SkippedInProgress []string `json:"skipped_in_progress"`
}

// scanStatusDTO is the progress/status object of the background floating-IP
// scan job (POST/GET /api/v1/admin/ips/scan). state is one of
// idle|clearing|listing|enqueuing|done|error|cancelled; "idle" means no scan
// has run in this control-api process yet.
type scanStatusDTO struct {
	State             string     `json:"state"`
	Running           bool       `json:"running"`
	DryRun            bool       `json:"dry_run"`
	Pages             int        `json:"pages"`
	Discovered        int        `json:"discovered"`
	Free              int        `json:"free"`
	Added             int        `json:"added"`
	Requeued          int        `json:"requeued"`
	Reordered         int        `json:"reordered"`
	SkippedInProgress int        `json:"skipped_in_progress"`
	StartedAt         *time.Time `json:"started_at"`
	FinishedAt        *time.Time `json:"finished_at"`
	Error             string     `json:"error"`
}

// ipsPageResponse / registryPageResponse are the paginated envelopes returned
// by GET /admin/ips and GET /admin/registry when `limit` is given; total is
// the number of rows matching the filters (before limit/offset).
type ipsPageResponse struct {
	Items  []db.IPQueueItem `json:"items"`
	Total  int              `json:"total"`
	Limit  int              `json:"limit"`
	Offset int              `json:"offset"`
}

type registryPageResponse struct {
	Items  []registryDTO `json:"items"`
	Total  int           `json:"total"`
	Limit  int           `json:"limit"`
	Offset int           `json:"offset"`
}

// registryDTO is one row of the durable per-address registry — see
// db.RegistrySummary.
type registryDTO struct {
	IPAddress     string     `json:"ip_address"`
	FirstSeenAt   time.Time  `json:"first_seen_at"`
	LastSeenAt    time.Time  `json:"last_seen_at"`
	TotalCycles   int        `json:"total_cycles"`
	LastResult    string     `json:"last_result"`
	LastCheckedAt *time.Time `json:"last_checked_at"`
	InQueue       bool       `json:"in_queue"`
	CurrentState  string     `json:"current_state"`
	// LastCycleID is the cycle counted by Egress and Ingress (0 = no checks).
	LastCycleID int            `json:"last_cycle_id"`
	Egress      levelResultDTO `json:"egress"`
	Ingress     levelResultDTO `json:"ingress"`
}

// levelResultDTO is "ok of total" recorded checks of one level in the last
// cycle, split by check family (tcp-22 and tcp-443 are both "tcp").
type levelResultDTO struct {
	Total  int           `json:"total"`
	OK     int           `json:"ok"`
	ByType []typeStatDTO `json:"by_type"`
}

type typeStatDTO struct {
	Type  string `json:"type"`
	Total int    `json:"total"`
	OK    int    `json:"ok"`
}

type validatorDTO struct {
	ValidatorID     string     `json:"validator_id"`
	Hostname        string     `json:"hostname"`
	OSPortID        string     `json:"os_port_id"`
	State           string     `json:"state"`
	LastHeartbeatAt *time.Time `json:"last_heartbeat_at"`
}

type createValidatorRequest struct {
	ValidatorID string `json:"validator_id"`
	OSPortID    string `json:"os_port_id"`
}

type updateValidatorRequest struct {
	OSPortID string `json:"os_port_id"`
}

type siteDTO struct {
	Index           int        `json:"index"`
	SiteID          string     `json:"site_id"`
	Hostname        string     `json:"hostname"`
	State           string     `json:"state"`
	LastHeartbeatAt *time.Time `json:"last_heartbeat_at"`
}

type putSiteRequest struct {
	SiteID string `json:"site_id"`
}

type targetGroupDTO struct {
	Name    string   `json:"name"`
	Targets []string `json:"targets"`
}

type putTargetGroupRequest struct {
	Targets []string `json:"targets"`
}

type checkTypeDTO struct {
	Name    string   `json:"name"`
	Enabled bool     `json:"enabled"`
	Targets []string `json:"targets"`
}

type putCheckTypeRequest struct {
	Enabled bool     `json:"enabled"`
	Targets []string `json:"targets"`
}

// orchestratorSettingsDTO doubles as both the GET response and the PUT
// request body for /api/v1/admin/config/orchestrator — a single-field DTO,
// same shape both ways, like putSiteRequest/siteDTO.
type orchestratorSettingsDTO struct {
	FIPSettleSeconds       int `json:"fip_settle_seconds"`
	HistoryRetentionCycles int `json:"history_retention_cycles"`
}

// inboundChecksDTO doubles as both the GET response and the PUT request
// body for /api/v1/admin/config/inbound-checks. Same field shape as
// proberAssignment.Ports/ICMP (dto.go).
type inboundChecksDTO struct {
	Ports []int `json:"ports"`
	ICMP  bool  `json:"icmp"`
}

// autoCycleDTO is the status+parameters object returned by every
// /api/v1/admin/auto-cycle endpoint. Times are RFC3339 (null when unset).
type autoCycleDTO struct {
	Enabled           bool       `json:"enabled"`
	IntervalSeconds   int        `json:"interval_seconds"`
	MaxRunSeconds     int        `json:"max_run_seconds"`
	Phase             string     `json:"phase"`
	RunStartedAt      *time.Time `json:"run_started_at"`
	NextRunAt         *time.Time `json:"next_run_at"`
	LastRunStartedAt  *time.Time `json:"last_run_started_at"`
	LastRunFinishedAt *time.Time `json:"last_run_finished_at"`
	LastOutcome       string     `json:"last_outcome"`
	LastError         string     `json:"last_error"`
	LastScannedFree   int        `json:"last_scanned_free"`
	RunsTotal         int        `json:"runs_total"`
}

// putAutoCycleRequest is the PUT body. Pointers make the update partial:
// an omitted field keeps its current value.
type putAutoCycleRequest struct {
	IntervalSeconds *int `json:"interval_seconds"`
	MaxRunSeconds   *int `json:"max_run_seconds"`
}