#include "cmdline.h"

// TODO check where this should be!
Paths FrameworkPaths;
Frameworks FrameworkInfo;

Path *Path_Init(const OSPathSpec *dir, Path *path) {
    path->spec = xmalloc(NULL, sizeof(OSPathSpec));
    *path->spec = *dir;
    path->recursive = NULL;
    path->dirlist = NULL;
    path->flags = 0;
    return path;
}

Path *Path_New(const OSPathSpec *dir) {
    Path *path;
    path = xmalloc(NULL, sizeof(Path));
    return Path_Init(dir, path);
}

void Path_Free(Path *path) {
    if (path) {
        if (path->spec)
            xfree(path->spec);
        if (path->recursive) {
            Paths_Terminate(path->recursive);
            xfree(path->recursive);
        }
        xfree(path);
    }
}

Boolean Paths_Initialize(Paths *paths) {
    OS_ASSERT(52, paths != NULL);

    memset(paths, 0, sizeof(Paths));
    paths->pathsArray = NULL;
    return 1;
}

Boolean Paths_Terminate(Paths *paths) {
    UInt16 index;

    OS_ASSERT(63, paths != NULL);

    if (paths->pathsArray) {
        for (index = 0; index < paths->pathsCount; index++)
            Path_Free(paths->pathsArray[index]);
        xfree(paths->pathsArray);
    }

    paths->pathsArray = NULL;
    return 1;
}

static Boolean Paths_GrowPaths(Paths *paths, UInt16 *index) {
    Path **newArray;

    OS_ASSERT(84, paths != NULL);

    if (paths->pathsCount >= paths->arraySize) {
        paths->arraySize += 20;
        newArray = xrealloc("access paths", paths->pathsArray, sizeof(Path *) * paths->arraySize);
        paths->pathsArray = newArray;
    }

    *index = paths->pathsCount++;
    return 1;
}

Boolean Paths_AddPath(Paths *paths, Path *path) {
    UInt16 ni;

    if (Paths_GrowPaths(paths, &ni)) {
        paths->pathsArray[ni] = path;
        return 1;
    } else {
        return 0;
    }
}

Boolean Paths_InsertPath(Paths *paths, UInt16 index, Path *path) {
    UInt16 ni;

    if (Paths_GrowPaths(paths, &ni)) {
        if (index > ni) {
            index = (ni != 0) ? (ni - 1) : 0;
        }
        memmove(&paths->pathsArray[index + 1], &paths->pathsArray[index], sizeof(Path *) * (paths->pathsCount - index));
        paths->pathsArray[index] = path;
        return 1;
    } else {
        return 0;
    }
}

Boolean Paths_RemovePath(Paths *paths, UInt16 index) {
    if (index >= paths->pathsCount)
        return 0;

    memmove(&paths->pathsArray[index], &paths->pathsArray[index + 1], sizeof(Path *) * (paths->pathsCount - index - 1));
    paths->pathsCount--;
    return 1;
}

Boolean Paths_DeletePath(Paths *paths, UInt16 index) {
    if (index >= paths->pathsCount)
        return 0;

    Path_Free(paths->pathsArray[index]);
    return Paths_RemovePath(paths, index);
}

Path *Paths_GetPath(Paths *paths, UInt16 pathnum) {
    OS_ASSERT(151, paths != NULL);

    if (pathnum < paths->pathsCount)
        return paths->pathsArray[pathnum];
    else
        return NULL;
}

UInt16 Paths_Count(const Paths *paths) {
    OS_ASSERT(161, paths != NULL);

    return paths->pathsCount;
}

Boolean Paths_FindPath(const Paths *paths, const Path *path) {
    UInt16 idx;

    OS_ASSERT(169, paths != NULL);

    for (idx = 0; idx < paths->pathsCount; idx++) {
        if (paths->pathsArray[idx] == path)
            return 1;
    }

    return 0;
}

Path *Paths_FindPathSpec(const Paths *paths, const OSPathSpec *dir) {
    UInt16 idx;
    Path *path;

    OS_ASSERT(182, paths != NULL);

    for (idx = 0; idx < paths->pathsCount; idx++) {
        path = paths->pathsArray[idx];
        if (OS_EqualPathSpec(path->spec, dir))
            return path;
    }

    return NULL;
}

static Boolean GatherRecurse(Paths *list, Path *path) {
    int err;
    OSOpenedDir rf;
    OSSpec ent;
    int count;
    char filename[64];
    Boolean isfile;
    char *nptr;
    char *eptr;
    UInt16 added;
    Path *nw;

    count = 0;
    if (CheckForUserBreak())
        return 1;

    err = OS_OpenDir(path->spec, &rf);
    while (!err) {
        err = OS_ReadDir(&rf, &ent, filename, &isfile);
        if (!err) {
            if (!isfile) {
                nw = Path_New(&ent.path);
                nptr = OS_GetFileNamePtr(filename);
                eptr = nptr + strlen(nptr) - 1;
                if (eptr[0] == OS_PATHSEP)
                    eptr--;
                if (eptr > nptr && *nptr == '(' && *eptr == ')')
                    continue;

                if (!Paths_AddPath(list, nw))
                    break;
                added = Paths_Count(list) - 1;
                if (!GatherRecurse(list, nw))
                    Paths_DeletePath(list, added);
            } else {
                if (!(++count % 50) && CheckForUserBreak())
                    return 0;
            }
        }
    }
    OS_CloseDir(&rf);
    return count > 0;
}

Boolean Paths_GatherRecurse(Path *path) {
    path->recursive = xcalloc(NULL, sizeof(Paths));
    GatherRecurse(path->recursive, path);
    return Paths_Count(path->recursive) != 0;
}

int Paths_CountRecurse(Paths *paths) {
    UInt16 idx;
    int mine;
    Path *path;

    mine = Paths_Count(paths);
    for (idx = 0; idx < mine; idx++) {
        path = Paths_GetPath(paths, idx);
        OS_ASSERT(336, path);

        if (path->recursive)
            mine += Paths_CountRecurse(path->recursive);
    }

    return mine;
}

static void CopyRecurseFSS(FSSpec **list, Paths *paths, UInt16 *count) {
    UInt16 idx;
    OSSpec spec;
    Path *path;

    for (idx = 0; idx < Paths_Count(paths); idx++) {
        path = Paths_GetPath(paths, idx);
        OS_ASSERT(353, path && *count > 0);
        OS_MakeSpecWithPath(path->spec, NULL, 0, &spec);
        OS_ASSERT(355, OS_OSSpec_To_FSSpec(&spec, *list));
        (*list)++;
        (*count)--;
        if (path->recursive)
            CopyRecurseFSS(list, path->recursive, count);
    }
}

void Paths_CopyRecurseFSS(FSSpec *list, Paths *paths, UInt16 count) {
    CopyRecurseFSS(&list, paths, &count);
    OS_ASSERT(367, count == 0);
}

static Boolean Frameworks_Initialize(Frameworks *fws) {
    OS_ASSERT(405, fws != NULL);

    memset(fws, 0, sizeof(Frameworks));
    fws->fwsArray = NULL;
    return 1;
}

static Boolean Frameworks_Grow(Frameworks *fws, UInt16 *index) {
    Paths_FWInfo **newArray;

    OS_ASSERT(418, fws != NULL);

    if (fws->fwsCount >= fws->arraySize) {
        fws->arraySize += 20;
        newArray = xrealloc("access frameworks", fws->fwsArray, sizeof(Paths_FWInfo *) * fws->arraySize);
        fws->fwsArray = newArray;
    }

    *index = fws->fwsCount++;
    return 1;
}

static Boolean Frameworks_Add(Frameworks *fws, Paths_FWInfo *info) {
    UInt16 ni;

    if (Frameworks_Grow(fws, &ni)) {
        fws->fwsArray[ni] = info;
        return 1;
    } else {
        return 0;
    }
}

static Paths_FWInfo *Framework_Init(OSSpec *dir, const char *name, const char *version, Paths_FWInfo *info, Path *p, Boolean hidden) {
    info->fileSpec = *dir;
    if (version && version[0])
        strncpy(info->version.s, version, sizeof(info->version.s));
    else
        info->version.s[0] = 0;
    strncpy(info->name.s, name, sizeof(info->name.s));
    info->path = p;
    info->hidden = hidden;
    return info;
}

static Paths_FWInfo *Framework_New(OSSpec *dir, const char *name, const char *version, Path *p, Boolean hidden) {
    Paths_FWInfo *info;
    info = xmalloc(NULL, sizeof(Paths_FWInfo));
    return Framework_Init(dir, name, version, info, p, hidden);
}

static Boolean CheckForFileInFrameworkDir(char *out, const char *framework_path, OSPathSpec *osps, const char *fname) {
    int err;
    OSSpec oss;

    sprintf(out, "%s/%s", framework_path, fname);
    err = OS_MakeSpecWithPath(osps, out, 0, &oss);
    if (err == 0 && OS_IsFile(&oss))
        return 1;

    sprintf(out, "%s/Headers/%s", framework_path, fname);
    err = OS_MakeSpecWithPath(osps, out, 0, &oss);
    if (err == 0 && OS_IsFile(&oss))
        return 1;

    sprintf(out, "%s/Resources/%s", framework_path, fname);
    err = OS_MakeSpecWithPath(osps, out, 0, &oss);
    if (err == 0 && OS_IsFile(&oss))
        return 1;

    sprintf(out, "%s/Resources/%s", framework_path, fname);
    err = OS_MakeSpecWithPath(osps, out, 0, &oss);
    if (err == 0 && OS_IsFile(&oss))
        return 1;

    return 0;
}

static Boolean CheckForFileInFramework(char *out, int i, const char *fname) {
    Paths_FWInfo *info;
    char framework_path[256];

    info = Frameworks_GetInfo(i);
    if (strlen(info->version.s))
        sprintf(framework_path, "%s.framework/Versions/%s", info->name.s, info->version.s);
    else
        sprintf(framework_path, "%s.framework", info->name.s);

    if (CheckForFileInFrameworkDir(out, framework_path, info->path->spec, fname))
        return 1;
    else
        return 0;
}

Boolean MakeFrameworkPath(char *out, const char *filename, Path *globalpath) {
    Paths_FWInfo *info;
    int err;
    char *end;
    char *fname;
    char framework_name[256];
    char framework_path[256];
    const char *s;
    char *d;
    int i;
    int n;

    n = Frameworks_GetCount();
    end = strchr(filename, OS_PATHSEP);
    if (!end) {
        for (i = 0; i < n; i++) {
            info = Frameworks_GetInfo(i);
            if (!info->hidden && CheckForFileInFramework(out, i, filename))
                return 1;
        }
        return 0;
    }

    fname = end + 1;
    s = filename;
    d = framework_name;
    while (s < end)
        *(d++) = *(s++);
    *d = 0;

    for (i = 0; i < n; i++) {
        if (!strcmp(Frameworks_GetInfo(i)->name.s, framework_name)) {
            return CheckForFileInFramework(out, i, fname) != 0;
        }
    }

    if (globalpath) {
        OSSpec oss;
        sprintf(framework_path, "../Frameworks/%s.framework", framework_name);
        err = OS_MakeSpecWithPath(globalpath->spec, framework_path, 0, &oss);
        if (!err && OS_IsDir(&oss)) {
            if (CheckForFileInFrameworkDir(out, framework_path, globalpath->spec, fname))
                return 1;
        }
    }

    n = Paths_Count(&FrameworkPaths);
    sprintf(framework_path, "%s.framework", framework_name);
    for (i = 0; i < n; i++) {
        OSSpec oss;
        Path *p;
        p = Paths_GetPath(&FrameworkPaths, i);
        err = OS_MakeSpecWithPath(p->spec, framework_path, 0, &oss);
        if (!err && OS_IsDir(&oss)) {
            if (CheckForFileInFrameworkDir(out, framework_path, p->spec, fname)) {
                Frameworks_AddFramework(framework_name, NULL, 1);
                return 1;
            }
        }
    }

    return 0;
}

void Frameworks_AddPath(const OSPathSpec *oss) {
    Paths_AddPath(&FrameworkPaths, Path_New(oss));
}

int Frameworks_AddFramework(const char *name, const char *version, Boolean hidden) {
    char fullname[256];
    int i;
    Path *p;
    int n_paths;
    OSSpec oss;
    int err;

    sprintf(fullname, "%s.framework", name);
    n_paths = Paths_Count(&FrameworkPaths);
    for (i = 0; i < n_paths; i++) {
        p = Paths_GetPath(&FrameworkPaths, i);
        err = OS_MakeSpecWithPath(p->spec, fullname, 0, &oss);
        if (!err && OS_IsDir(&oss)) {
            if (Frameworks_Add(&FrameworkInfo, Framework_New(&oss, name, version, p, hidden))) {
                if (version && strlen(version)) {
                    sprintf(fullname, "Versions/%s/Frameworks", version);
                    err = OS_MakeSpecWithPath(&oss.path, fullname, 0, &oss);
                } else {
                    err = OS_MakeSpecWithPath(&oss.path, "Frameworks", 0, &oss);
                }
                if (!err && OS_IsDir(&oss))
                    Frameworks_AddPath(&oss.path);
                return 1;
            }
        }
    }

    return 0;
}

void Framework_GetEnvInfo(void) {
    char path[256];
    char *env;
    char *ptr;
    OSSpec spec;
    char name[64];
    char version[16];
    int err;
    Boolean is_file;

    OS_ASSERT(672, Paths_Initialize(&FrameworkPaths) == 1);
    OS_ASSERT(673, Frameworks_Initialize(&FrameworkInfo) == 1);

    env = getenv("MWFrameworkPaths");
    if (env) {
        while (*env) {
            ptr = path;
            while (*env && *env != ':' && (ptr + 1) < &path[sizeof(path)])
                *(ptr++) = *(env++);
            *ptr = 0;
            while (*env && *env == ':')
                env++;

            if (path[0]) {
                if (strlen(path) >= sizeof(path)) {
                    CLReportError(64, sizeof(path), path);
                } else {
                    err = OS_MakeSpec(path, &spec, &is_file);
                    if (!is_file && !err) {
                        Frameworks_AddPath(&spec.path);
                    } else {
                        CLReportError(23, path);
                    }
                }
            }
        }
    }

    env = getenv("MWFrameworkVersions");
    if (env) {
        while (*env) {
            ptr = name;
            while (*env && *env != ':' && (ptr + 1) < &name[sizeof(name)])
                *(ptr++) = *(env++);
            *ptr = 0;
            while (*env && *env == ':')
                env++;

            ptr = version;
            while (*env && *env != ',' && (ptr + 1) < &version[sizeof(version)])
                *(ptr++) = *(env++);
            *ptr = 0;
            while (*env && *env == ',')
                env++;

            if (name[0])
                Frameworks_AddFramework(name, version, 0);
        }
    }
}

int Frameworks_GetCount(void) {
    return FrameworkInfo.fwsCount;
}

Paths_FWInfo *Frameworks_GetInfo(int which) {
    OS_ASSERT(762, FrameworkInfo.fwsArray);
    OS_ASSERT(763, FrameworkInfo.fwsCount > which);
    return FrameworkInfo.fwsArray[which];
}