Platform.health_forecast.GetHealthForecastIdentityObservation

Call as

addon.Platform:GetHealthForecastIdentityObservation(unit)

Available directly through addon; no dependency is needed.

What it does

On probe- and restricted-policy clients, observe exact UnitExists(unit), then UnitGUID(unit) only for a present unit. Known absence is false. Present identity requires a readable nonempty GUID; missing, failed, malformed or restricted required facts are unavailable. No health, provider or extra-unit observation is added.

Arguments

Name	Type	What it does
`self`	`RMPlatform`	Rotation Master platform adapter (implicit with colon calls).
`unit`	`string`	Selected nonempty unit token.

Returns

1	`string \| boolean \| nil`	Present GUID, false for known absence, or nil when unavailable.
2	`string \| nil`	Policy, validation or observation availability reason.

Editions

Built In helpers are registered on every edition. What differs is the game API they read; where one is missing the helper falls back or returns nil with a reason.

Not available on that edition (the reason is in the tooltip)
Only while Blizzard's deprecation fallbacks are on

Game API
`UnitExists`
`UnitGUID`
`canaccessvalue`

Secret values (Retail and Forever)

On Retail and Forever the game hands addons secret values. This helper checks what it reads (addon.Platform:CanReadValue) and returns nil with a reason such as restricted-value instead of a secret it cannot compare. Treat nil as unavailable, not as false.

Example

local guid = addon.Platform:GetHealthForecastIdentityObservation("target")
-- false when there is no target, nil when unavailable
if not guid then return guid end
return guid:sub(1, 9) == "Creature-"

Source

Platform/health_forecast.lua, line 52. Read only in game; Duplicate makes an editable copy.

Platform.health_forecast.GetHealthForecastIdentityObservation(self, unit)

    local policy=self:GetCombatDataPolicy()
    if policy~='probe' and policy~='restricted' then return nil,'unsupported-policy' end
    if not self:CanReadValue(unit) then return nil,'restricted-value' end
    if type(unit)~='string' or unit=='' then return nil,'invalid-unit' end
    if type(UnitExists)~='function' then return nil,'missing-api' end
    local ok,exists=pcall(UnitExists,unit)
    if not ok then return nil,'api-error' end
    if not self:CanReadValue(exists) then return nil,'restricted-value' end
    if exists==nil then return nil,'unit-data-unavailable' end
    if type(exists)~='boolean' then return nil,'invalid-api-result' end
    if not exists then return false end
    if type(UnitGUID)~='function' then return nil,'missing-api' end
    local success,guid=pcall(UnitGUID,unit)
    if not success then return nil,'api-error' end
    if not self:CanReadValue(guid) then return nil,'restricted-value' end
    if canaccessvalue and not canaccessvalue(guid) then return nil,'restricted-value' end
    if guid==nil then return nil,'unit-guid-unavailable' end
    if type(guid)~='string' or guid=='' then return nil,'invalid-api-result' end
    return guid

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