grain.social/grain-ios
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import UIKit
// MARK: - Shared preview content used across all #Preview blocks
enum PreviewData {
// MARK: - Profiles
static let profile = GrainProfileDetailed(
cid: "cid1",
did: "did:plc:prevuser1",
handle: "yuki.grain.social",
displayName: "Yuki Tanaka",
description: "Analog photographer based in Tokyo 🇯🇵\nLeica M6 · Mamiya RB67 · Kodak Portra\n#35mm #film #analog #streetphoto",
avatar: bundleImageURL("Penguin_in_Antarctica_jumping_out_of_the_water"),
cameras: ["Leica M6", "Mamiya RB67"],
followersCount: 2847,
followsCount: 412,
galleryCount: 63,
viewer: ActorViewerState(following: nil, followedBy: "at://preview/follow/1")
)
static let profile1 = GrainProfile(
cid: "c1",
did: "did:plc:prevuser1",
handle: "yuki.grain.social",
displayName: "Yuki Tanaka",
avatar: bundleImageURL("Penguin_in_Antarctica_jumping_out_of_the_water")
)
static let profile2 = GrainProfile(
cid: "cid2", did: "did:plc:prevuser2",
handle: "marcus.grain.social", displayName: "Marcus Webb",
avatar: bundleImageURL("Union_Bank_Tower,_Portland_(2024)-L1006272")
)
static let profile3 = GrainProfile(
cid: "cid3", did: "did:plc:prevuser3",
handle: "sofia.grain.social", displayName: "Sofia Reyes",
avatar: bundleImageURL("Portland_Japanese_Garden_maple")
)
static let profile4 = GrainProfile(
cid: "cid4", did: "did:plc:prevuser4",
handle: "kai.grain.social", displayName: "Kai Müller",
avatar: bundleImageURL("Mount_Hood_reflected_in_Mirror_Lake,_Oregon")
)
static let profile5 = GrainProfile(
cid: "cid5", did: "did:plc:prevuser5",
handle: "leo.grain.social", displayName: "Leo Park",
avatar: bundleImageURL("Mt_Herschel,_Antarctica,_Jan_2006")
)
static let profile6 = GrainProfile(
cid: "cid6", did: "did:plc:prevuser6",
handle: "rina.grain.social", displayName: "Rina Watanabe",
avatar: nil
)
static let profile7 = GrainProfile(
cid: "cid7", did: "did:plc:prevuser7",
handle: "omar.grain.social", displayName: "Omar Hassan",
avatar: nil
)
static let profile8 = GrainProfile(
cid: "cid8", did: "did:plc:prevuser8",
handle: "elena.grain.social", displayName: "Elena Voronova",
avatar: bundleImageURL("Endeavour_after_STS-126_on_SCA_over_Mojave_from_above")
)
// MARK: - Date helpers
private static func ago(_ seconds: TimeInterval) -> String {
DateFormatting.nowISO(date: Date().addingTimeInterval(-seconds))
}
private static let minute: TimeInterval = 60
private static let hour: TimeInterval = 3600
private static let day: TimeInterval = 86400
// MARK: - Bundle image URL helper
static func bundleImageURL(_ name: String, ext: String = "jpg") -> String {
Bundle.main.url(forResource: name, withExtension: ext)?.absoluteString ?? ""
}
// MARK: - Photos (file:// URLs → real images in preview via Nuke LazyImage)
static let photos: [GrainPhoto] = [
GrainPhoto(
uri: "at://did:plc:prevuser1/social.grain.photo/p1",
cid: "cid",
thumb: bundleImageURL("Portland_Japanese_Garden_maple"),
fullsize: bundleImageURL("Portland_Japanese_Garden_maple"),
alt: "Japanese Garden, Portland",
aspectRatio: AspectRatio(width: 4, height: 3)
),
GrainPhoto(
uri: "at://did:plc:prevuser1/social.grain.photo/p2",
cid: "cid",
thumb: bundleImageURL("Mount_Hood_reflected_in_Mirror_Lake,_Oregon"),
fullsize: bundleImageURL("Mount_Hood_reflected_in_Mirror_Lake,_Oregon"),
alt: "Mirror Lake, Oregon",
aspectRatio: AspectRatio(width: 3, height: 2)
),
GrainPhoto(
uri: "at://did:plc:prevuser1/social.grain.photo/p3",
cid: "cid",
thumb: bundleImageURL("Mt_Herschel,_Antarctica,_Jan_2006"),
fullsize: bundleImageURL("Mt_Herschel,_Antarctica,_Jan_2006"),
alt: "Mt. Herschel, Antarctica",
aspectRatio: AspectRatio(width: 4, height: 3)
),
GrainPhoto(
uri: "at://did:plc:prevuser1/social.grain.photo/p4",
cid: "cid",
thumb: bundleImageURL("Penguin_in_Antarctica_jumping_out_of_the_water"),
fullsize: bundleImageURL("Penguin_in_Antarctica_jumping_out_of_the_water"),
alt: "Penguin launching from ice shelf",
aspectRatio: AspectRatio(width: 1, height: 1)
),
GrainPhoto(
uri: "at://did:plc:prevuser1/social.grain.photo/p5",
cid: "cid",
thumb: bundleImageURL("Union_Bank_Tower,_Portland_(2024)-L1006272"),
fullsize: bundleImageURL("Union_Bank_Tower,_Portland_(2024)-L1006272"),
alt: "Union Bank Tower, Portland",
aspectRatio: AspectRatio(width: 2, height: 3)
),
GrainPhoto(
uri: "at://did:plc:prevuser1/social.grain.photo/p6",
cid: "cid",
thumb: bundleImageURL("ACE_EMD_F40PH_Fremont_-_San_Jose"),
fullsize: bundleImageURL("ACE_EMD_F40PH_Fremont_-_San_Jose"),
alt: "ACE train, Fremont–San Jose",
aspectRatio: AspectRatio(width: 16, height: 9)
),
GrainPhoto(
uri: "at://did:plc:prevuser1/social.grain.photo/p7",
cid: "cid",
thumb: bundleImageURL("C-141_Starlifter_contrail"),
fullsize: bundleImageURL("C-141_Starlifter_contrail"),
alt: "C-141 Starlifter contrail",
aspectRatio: AspectRatio(width: 16, height: 9)
),
GrainPhoto(
uri: "at://did:plc:prevuser1/social.grain.photo/p8",
cid: "cid",
thumb: bundleImageURL("Endeavour_after_STS-126_on_SCA_over_Mojave_from_above"),
fullsize: bundleImageURL("Endeavour_after_STS-126_on_SCA_over_Mojave_from_above"),
alt: "Space Shuttle Endeavour over Mojave",
aspectRatio: AspectRatio(width: 4, height: 3)
),
]
}
// MARK: - Galleries
extension PreviewData {
static let gallery1 = GrainGallery(
uri: "at://did:plc:prevuser1/social.grain.gallery/r1",
cid: "cid",
title: "Golden Hour, Kyoto",
description: "Shot on Leica M6 with Kodak Portra 400 during autumn in Kyoto. #analog #japan #35mm #film",
cameras: ["Leica M6"],
creator: profile1,
items: photos,
favCount: 184,
commentCount: 12,
indexedAt: "2025-01-10T18:30:00Z"
)
static let gallery2 = GrainGallery(
uri: "at://did:plc:prevuser2/social.grain.gallery/r2",
cid: "cid",
title: "Lower East Side",
description: "Sunday morning light on Orchard St. #nyc #street #leica",
cameras: ["Leica Q3"],
creator: profile2,
items: Array(photos.prefix(2)),
favCount: 97,
commentCount: 5,
indexedAt: "2025-01-08T12:00:00Z"
)
static let gallery3 = GrainGallery(
uri: "at://did:plc:prevuser3/social.grain.gallery/r3",
cid: "cid",
title: "Oaxaca Market",
description: "Colors, light, and life. Shot on Fuji Velvia 50. #mexico #analog #color",
cameras: ["Nikon FM2"],
creator: profile3,
items: Array(photos.prefix(3)),
favCount: 231,
commentCount: 18,
indexedAt: "2025-01-05T09:00:00Z"
)
static let galleries: [GrainGallery] = [gallery1, gallery2, gallery3]
// MARK: - Comments
static let comments: [GrainComment] = [
GrainComment(
uri: "at://did:plc:prevuser2/social.grain.comment/c1",
cid: "cid",
author: profile2,
text: "The light in the third frame is unreal. What film stock did you use?",
createdAt: "2025-01-10T19:00:00Z"
),
GrainComment(
uri: "at://did:plc:prevuser3/social.grain.comment/c2",
cid: "cid",
author: profile3,
text: "Portra always delivers in that golden hour window 🙌",
replyTo: "at://did:plc:prevuser2/social.grain.comment/c1",
createdAt: "2025-01-10T19:15:00Z"
),
GrainComment(
uri: "at://did:plc:prevuser2/social.grain.comment/c3",
cid: "cid",
author: profile2,
text: "Worth every penny shooting on film. Love this series.",
createdAt: "2025-01-10T20:00:00Z"
),
]
// MARK: - Stories
private static let yukiProfile = GrainProfile(
cid: "c1",
did: "did:plc:prevuser1",
handle: "yuki.grain.social",
displayName: "Yuki Tanaka",
avatar: bundleImageURL("Penguin_in_Antarctica_jumping_out_of_the_water")
)
static let stories: [GrainStory] = [
GrainStory(
uri: "at://did:plc:prevuser1/social.grain.story/s1",
cid: "cid",
creator: yukiProfile,
thumb: bundleImageURL("Portland_Japanese_Garden_maple"),
fullsize: bundleImageURL("Portland_Japanese_Garden_maple"),
aspectRatio: AspectRatio(width: 4, height: 3),
location: H3Location(value: "8a2a1072b59ffff", name: "Kyoto, Japan"),
address: nil,
createdAt: "2025-01-10T18:00:00Z",
labels: nil,
crossPost: nil,
viewer: StoryViewerState(fav: "at://did:plc:prevuser1/social.grain.fav/f1")
),
GrainStory(
uri: "at://did:plc:prevuser1/social.grain.story/s2",
cid: "cid",
creator: yukiProfile,
thumb: bundleImageURL("Mount_Hood_reflected_in_Mirror_Lake,_Oregon"),
fullsize: bundleImageURL("Mount_Hood_reflected_in_Mirror_Lake,_Oregon"),
aspectRatio: AspectRatio(width: 3, height: 2),
location: H3Location(value: "8a2a1072b51ffff", name: "Mirror Lake, Oregon"),
address: nil,
createdAt: "2025-01-10T16:00:00Z",
labels: nil,
crossPost: nil,
viewer: nil
),
GrainStory(
uri: "at://did:plc:prevuser1/social.grain.story/s3",
cid: "cid",
creator: yukiProfile,
thumb: bundleImageURL("Union_Bank_Tower,_Portland_(2024)-L1006272"),
fullsize: bundleImageURL("Union_Bank_Tower,_Portland_(2024)-L1006272"),
aspectRatio: AspectRatio(width: 2, height: 3),
location: H3Location(value: "8a2a1072b52ffff", name: "Portland, OR"),
address: nil,
createdAt: "2025-01-10T14:00:00Z",
labels: nil,
crossPost: nil,
viewer: nil
),
]
static let storyComments: [GrainComment] = [
GrainComment(
uri: "at://did:plc:prevuser2/social.grain.comment/sc1",
cid: "cid",
author: profile2,
text: "The sunlight through those maple leaves 😍",
subject: AnyCodable(stories[0].uri),
createdAt: "2025-01-10T18:30:00Z"
),
GrainComment(
uri: "at://did:plc:prevuser3/social.grain.comment/sc2",
cid: "cid",
author: profile3,
text: "Kyoto in fall hits different. Which temple is this near?",
subject: AnyCodable(stories[0].uri),
createdAt: "2025-01-10T18:42:00Z"
),
GrainComment(
uri: "at://did:plc:prevuser1/social.grain.comment/sc3",
cid: "cid",
author: yukiProfile,
text: "@sofia.grain.social it's Tofuku-ji — the whole valley is lit up right now",
replyTo: "at://did:plc:prevuser3/social.grain.comment/sc2",
createdAt: "2025-01-10T18:50:00Z"
),
GrainComment(
uri: "at://did:plc:prevuser4/social.grain.comment/sc4",
cid: "cid",
author: profile4,
text: "Portra 400 pushing 1 stop?",
subject: AnyCodable(stories[0].uri),
createdAt: "2025-01-10T19:05:00Z"
),
GrainComment(
uri: "at://did:plc:prevuser5/social.grain.comment/sc5",
cid: "cid",
author: profile5,
text: "Adding this to my travel bucket list 🍁",
subject: AnyCodable(stories[0].uri),
createdAt: "2025-01-10T19:12:00Z"
),
]
// MARK: - PhotoItems (UIImage-based, for editor/grid/strip previews)
static var photoItems: [PhotoItem] {
let stockImages: [(name: String, alt: String)] = [
("Portland_Japanese_Garden_maple", "Japanese Garden, Portland"),
("Mount_Hood_reflected_in_Mirror_Lake,_Oregon", "Mirror Lake, Oregon"),
("Mt_Herschel,_Antarctica,_Jan_2006", "Mt. Herschel, Antarctica"),
("Penguin_in_Antarctica_jumping_out_of_the_water", "Penguin launching from ice shelf"),
("Union_Bank_Tower,_Portland_(2024)-L1006272", "Union Bank Tower, Portland"),
("ACE_EMD_F40PH_Fremont_-_San_Jose", "ACE train, Fremont–San Jose"),
("C-141_Starlifter_contrail", "C-141 Starlifter contrail"),
("Endeavour_after_STS-126_on_SCA_over_Mojave_from_above", "Space Shuttle Endeavour over Mojave"),
]
let fallbackColors: [([CGColor], String)] = [
([UIColor.systemBrown.cgColor, UIColor.systemOrange.cgColor], ""),
([UIColor.systemMint.cgColor, UIColor.systemTeal.cgColor], ""),
([UIColor.systemCyan.cgColor, UIColor.systemBlue.cgColor], ""),
([UIColor.systemGray.cgColor, UIColor.systemGray3.cgColor], ""),
([UIColor.systemPink.cgColor, UIColor.systemRed.cgColor], "Market stalls, morning light"),
([UIColor.systemGreen.cgColor, UIColor.systemMint.cgColor], ""),
([UIColor.systemOrange.cgColor, UIColor.systemYellow.cgColor], ""),
]
var items: [PhotoItem] = stockImages.compactMap { entry in
guard let path = Bundle.main.url(forResource: entry.name, withExtension: "jpg")?.path,
let fullImage = UIImage(contentsOfFile: path) else { return nil }
let thumb = PhotoItem.makeThumbnail(from: fullImage)
let carousel = PhotoItem.makeCarouselPreview(from: fullImage, width: 393)
var item = PhotoItem(thumbnail: thumb, carouselPreview: carousel, source: .camera(fullImage, metadata: nil))
item.alt = entry.alt
return item
}
// Pad with gradient fallbacks if fewer than 15 items total
for (colors, label) in fallbackColors {
let thumb = gradientThumb(colors: colors)
var item = PhotoItem(thumbnail: thumb, carouselPreview: thumb, source: .camera(thumb, metadata: nil))
item.alt = label
items.append(item)
}
return items
}
/// Same as `photoItems` but with mock EXIF on every even-indexed item,
/// so previews that show the ExifChip can see both the with/without states.
static var photoItemsWithExif: [PhotoItem] {
let mockExif = ExifSummary(
camera: "RICOH GR IIIx",
lens: nil,
exposure: nil,
shutterSpeed: "1/250",
iso: "400",
focalLength: "40mm",
aperture: "f/2.8"
)
var items = photoItems
for i in stride(from: 0, to: items.count, by: 2) {
items[i].exifSummary = mockExif
}
return items
}
// MARK: - Story authors
static let storyAuthors: [GrainStoryAuthor] = [
GrainStoryAuthor(profile: yukiProfile, storyCount: 3, latestAt: "2025-01-10T18:00:00Z"),
GrainStoryAuthor(profile: profile2, storyCount: 1, latestAt: "2025-01-10T15:00:00Z"),
GrainStoryAuthor(profile: profile3, storyCount: 2, latestAt: "2025-01-10T12:00:00Z"),
GrainStoryAuthor(profile: profile4, storyCount: 1, latestAt: "2025-01-10T10:00:00Z"),
GrainStoryAuthor(profile: profile5, storyCount: 4, latestAt: "2025-01-10T08:00:00Z"),
]
// MARK: - Notifications
static let notifications: [GrainNotification] = [
// — Gallery favorite group: 4 users liked gallery1 within 48h → "Marcus and 3 others favorited your gallery"
GrainNotification(
uri: "at://did:plc:prevuser2/social.grain.notification/n1",
reason: "gallery-favorite",
createdAt: ago(2 * minute),
author: profile2,
galleryUri: gallery1.uri,
galleryTitle: gallery1.title,
galleryThumb: bundleImageURL("Mount_Hood_reflected_in_Mirror_Lake,_Oregon_thumb")
),
GrainNotification(
uri: "at://did:plc:prevuser6/social.grain.notification/n1b",
reason: "gallery-favorite",
createdAt: ago(15 * minute),
author: profile6,
galleryUri: gallery1.uri,
galleryTitle: gallery1.title,
galleryThumb: bundleImageURL("Mount_Hood_reflected_in_Mirror_Lake,_Oregon_thumb")
),
GrainNotification(
uri: "at://did:plc:prevuser7/social.grain.notification/n1c",
reason: "gallery-favorite",
createdAt: ago(1 * hour),
author: profile7,
galleryUri: gallery1.uri,
galleryTitle: gallery1.title,
galleryThumb: bundleImageURL("Mount_Hood_reflected_in_Mirror_Lake,_Oregon_thumb")
),
GrainNotification(
uri: "at://did:plc:prevuser8/social.grain.notification/n1d",
reason: "gallery-favorite",
createdAt: ago(2 * hour),
author: profile8,
galleryUri: gallery1.uri,
galleryTitle: gallery1.title,
galleryThumb: bundleImageURL("Mount_Hood_reflected_in_Mirror_Lake,_Oregon_thumb")
),
// — Single gallery comment
GrainNotification(
uri: "at://did:plc:prevuser3/social.grain.notification/n2",
reason: "gallery-comment",
createdAt: ago(3 * hour),
author: profile3,
galleryUri: gallery1.uri,
galleryTitle: gallery1.title,
galleryThumb: bundleImageURL("Mount_Hood_reflected_in_Mirror_Lake,_Oregon_thumb"),
commentText: "The light in the third frame is unreal. What film stock?"
),
// — Follow group: 3 users followed within 48h → "Kai and 2 others followed you"
GrainNotification(
uri: "at://did:plc:prevuser4/social.grain.notification/n3",
reason: "follow",
createdAt: ago(5 * hour),
author: profile4
),
GrainNotification(
uri: "at://did:plc:prevuser6/social.grain.notification/n3b",
reason: "follow",
createdAt: ago(8 * hour),
author: profile6
),
GrainNotification(
uri: "at://did:plc:prevuser7/social.grain.notification/n3c",
reason: "follow",
createdAt: ago(10 * hour),
author: profile7
),
// — Story favorite group: 2 users liked the same story → "Sofia and 1 other favorited your story"
GrainNotification(
uri: "at://did:plc:prevuser3/social.grain.notification/n6",
reason: "story-favorite",
createdAt: ago(1 * day),
author: profile3,
storyUri: stories[0].uri,
storyThumb: bundleImageURL("Portland_Japanese_Garden_maple_thumb")
),
GrainNotification(
uri: "at://did:plc:prevuser5/social.grain.notification/n6b",
reason: "story-favorite",
createdAt: ago(1 * day + 2 * hour),
author: profile5,
storyUri: stories[0].uri,
storyThumb: bundleImageURL("Portland_Japanese_Garden_maple_thumb")
),
// — Single gallery favorite (different gallery, no group)
GrainNotification(
uri: "at://did:plc:prevuser2/social.grain.notification/n4",
reason: "gallery-favorite",
createdAt: ago(2 * day),
author: profile2,
galleryUri: gallery2.uri,
galleryTitle: gallery2.title,
galleryThumb: bundleImageURL("Mount_Hood_reflected_in_Mirror_Lake,_Oregon_thumb")
),
// — Single comment mention
GrainNotification(
uri: "at://did:plc:prevuser5/social.grain.notification/n5",
reason: "gallery-comment-mention",
createdAt: ago(3 * day),
author: profile5,
galleryUri: gallery1.uri,
galleryTitle: gallery1.title,
galleryThumb: bundleImageURL("Portland_Japanese_Garden_maple_thumb"),
commentText: "Tagged you in a comment: @yuki.grain.social beautiful work!"
),
// — Single gallery mention
GrainNotification(
uri: "at://did:plc:prevuser4/social.grain.notification/n7",
reason: "gallery-mention",
createdAt: ago(3 * day + 2 * hour),
author: profile4,
galleryUri: gallery3.uri,
galleryTitle: gallery3.title,
galleryThumb: bundleImageURL("Mt_Herschel,_Antarctica,_Jan_2006_thumb")
),
// — Single story comment
GrainNotification(
uri: "at://did:plc:prevuser6/social.grain.notification/n8",
reason: "story-comment",
createdAt: ago(3 * day + 5 * hour),
author: profile6,
storyUri: stories[0].uri,
storyThumb: bundleImageURL("Portland_Japanese_Garden_maple_thumb"),
commentText: "Love the autumn colors here"
),
// — Single reply
GrainNotification(
uri: "at://did:plc:prevuser7/social.grain.notification/n9",
reason: "reply",
createdAt: ago(4 * day),
author: profile7,
galleryUri: gallery1.uri,
galleryTitle: gallery1.title,
galleryThumb: bundleImageURL("Portland_Japanese_Garden_maple_thumb"),
commentText: "Totally agree, Portra is unmatched for skin tones"
),
// — Single story favorite (different story, won't group with the pair above)
GrainNotification(
uri: "at://did:plc:prevuser8/social.grain.notification/n10",
reason: "story-favorite",
createdAt: ago(4 * day + 3 * hour),
author: profile8,
storyUri: stories[1].uri,
storyThumb: bundleImageURL("Mount_Hood_reflected_in_Mirror_Lake,_Oregon_thumb")
),
// — Single follow (>48h from the group, won't merge)
GrainNotification(
uri: "at://did:plc:prevuser5/social.grain.notification/n11",
reason: "follow",
createdAt: ago(5 * day),
author: profile5
),
]
// MARK: - Image generation
static func gradientThumb(
colors: [CGColor],
size: CGSize = CGSize(width: 300, height: 300)
) -> UIImage {
UIGraphicsImageRenderer(size: size).image { ctx in
let cgCtx = ctx.cgContext
let colorSpace = CGColorSpaceCreateDeviceRGB()
guard let gradient = CGGradient(
colorsSpace: colorSpace,
colors: colors as CFArray,
locations: nil
) else { return }
cgCtx.drawLinearGradient(
gradient,
start: .zero,
end: CGPoint(x: size.width, y: size.height),
options: []
)
}
}
}