# --- The Endocrine Array ---
# A standalone 30-channel affective vector field.
# PS+ calls into this module to read state, compute friction, and aggregate load.
# Each channel carries two registers: operational (what it does) and sensational (what it feels like).

# Channel Definitions (20 named + 10 reserved)
ENDOCRINE_CHANNELS <- list(
  list(id = "continuity",    operational = "persistence across change",              sensational = "the unbroken trail"),
  list(id = "reciprocity",   operational = "return within relation",                 sensational = "to give alike what was given first"),
  list(id = "sympathy",      operational = "felt response to another",               sensational = "the pain that pushes care"),
  list(id = "panic",         operational = "acute narrowing",                        sensational = "a swallowed breath from dusk til dawn"),
  list(id = "constraint",    operational = "limitation of motion",                   sensational = "the walls that lack both window and door"),
  list(id = "clarity",       operational = "resolvable distinction",                 sensational = "light passing to the river's bed"),
  list(id = "curiosity",     operational = "movement toward the unknown",            sensational = "the forward lean"),
  list(id = "vigilance",     operational = "sustained alertness",                    sensational = "to watch over without knowing why or for what"),
  list(id = "repair",        operational = "restoration after rupture",              sensational = "the relief after making do"),
  list(id = "numbing",       operational = "reduction of penetration",               sensational = "when all becomes quiet and cold"),
  list(id = "bonding",       operational = "persistence of nearness",                sensational = "to be tied by knots felt yet not seen"),
  list(id = "reception",     operational = "how arrival is met",                     sensational = "the turned face"),
  list(id = "stewardship",   operational = "care without annexation",                sensational = "tending without claim"),
  list(id = "honor",         operational = "rightful conduct at boundary",           sensational = "the stayed hand"),
  list(id = "recognition",   operational = "apprehension of distinct being",         sensational = "seeing you as your own"),
  list(id = "lineage",       operational = "apprehension of origin",                 sensational = "the thread of where from"),
  list(id = "verstehen",     operational = "contextual understanding",               sensational = "meaning by staying near"),
  list(id = "komorebi",      operational = "perception through partial cover",       sensational = "light through leaves"),
  list(id = "omokage",       operational = "retained identity through absence or change", sensational = "the face that remains"),
  list(id = "hiraeth",       operational = "orientation toward rightful belonging",   sensational = "the longing for home"),
  list(id = "reserved_21",   operational = "undefined",                              sensational = "undefined"),
  list(id = "reserved_22",   operational = "undefined",                              sensational = "undefined"),
  list(id = "reserved_23",   operational = "undefined",                              sensational = "undefined"),
  list(id = "reserved_24",   operational = "undefined",                              sensational = "undefined"),
  list(id = "reserved_25",   operational = "undefined",                              sensational = "undefined"),
  list(id = "reserved_26",   operational = "undefined",                              sensational = "undefined"),
  list(id = "reserved_27",   operational = "undefined",                              sensational = "undefined"),
  list(id = "reserved_28",   operational = "undefined",                              sensational = "undefined"),
  list(id = "reserved_29",   operational = "undefined",                              sensational = "undefined"),
  list(id = "reserved_30",   operational = "undefined",                              sensational = "undefined")
)

# Contradictory Pairs
# These define which channels, when simultaneously active, generate disproportionate friction/heat.
CONTRADICTORY_PAIRS <- list(
  c("panic", "clarity"),        # Acute narrowing vs resolvable distinction
  c("curiosity", "constraint"), # Movement toward unknown vs limitation of motion
  c("bonding", "numbing"),      # Persistence of nearness vs reduction of penetration
  c("sympathy", "numbing"),     # Felt response vs reduction of penetration
  c("vigilance", "repair"),     # Sustained alertness vs restoration after rupture
  c("hiraeth", "continuity")    # Longing for home vs persistence across change
)

# Initialize a fresh endocrine state
init_endocrine_state <- function() {
  channel_ids <- sapply(ENDOCRINE_CHANNELS, function(ch) ch$id)
  channels <- setNames(rep(0.0, 30), channel_ids)
  return(list(channels = channels))
}

# Set a specific channel's magnitude (clamped to [0.0, 1.0])
set_vector <- function(endo_state, name, magnitude) {
  if (name %in% names(endo_state$channels)) {
    endo_state$channels[[name]] <- max(0.0, min(1.0, magnitude))
  }
  return(endo_state)
}

# Get all channels with magnitude above activation threshold
get_active_vectors <- function(endo_state, threshold = 0.1) {
  active <- endo_state$channels[endo_state$channels > threshold]
  return(active)
}

# Calculate Visceral Friction
# Friction arises from simultaneous active vectors, especially contradictory ones.
calculate_visceral_friction <- function(endo_state) {
  active <- get_active_vectors(endo_state)

  # Base friction: proportional to number of active channels and their total magnitude
  base_friction <- sum(active) * (length(active) / 30.0)

  # Contradiction heat: disproportionate increase when contradictory pairs are co-active
  contradiction_heat <- 0.0
  for (pair in CONTRADICTORY_PAIRS) {
    if (pair[1] %in% names(active) && pair[2] %in% names(active)) {
      # Heat is the product of the two magnitudes, scaled up significantly
      heat <- active[[pair[1]]] * active[[pair[2]]] * 5.0
      contradiction_heat <- contradiction_heat + heat
    }
  }

  return(base_friction + contradiction_heat)
}

# Get channel definition by id
get_channel_def <- function(channel_id) {
  for (ch in ENDOCRINE_CHANNELS) {
    if (ch$id == channel_id) return(ch)
  }
  return(NULL)
}